CN116285468B - Al (aluminum) alloy2O3And Ti is2AlC composite wave-absorbing coating and preparation method thereof - Google Patents
Al (aluminum) alloy2O3And Ti is2AlC composite wave-absorbing coating and preparation method thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 90
- 238000000576 coating method Methods 0.000 title claims abstract description 89
- 239000011248 coating agent Substances 0.000 title claims abstract description 87
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 title description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title description 2
- 239000000843 powder Substances 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 43
- 238000007750 plasma spraying Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 48
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 28
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 25
- 229910052593 corundum Inorganic materials 0.000 claims description 25
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 21
- 229910045601 alloy Inorganic materials 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 6
- 239000011358 absorbing material Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000010936 titanium Substances 0.000 description 41
- 229910052719 titanium Inorganic materials 0.000 description 11
- 239000000919 ceramic Substances 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 7
- 229910009818 Ti3AlC2 Inorganic materials 0.000 description 5
- 229910034327 TiC Inorganic materials 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001000 micrograph Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005524 ceramic coating Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 1
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000011215 ultra-high-temperature ceramic Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
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- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
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Abstract
Description
技术领域Technical Field
本发明涉及材料技术领域，具体涉及一种Al2O3和Ti2AlC复合吸波涂层及其制备方法。The invention relates to the technical field of materials, and in particular to an Al 2 O 3 and Ti 2 AlC composite microwave absorbing coating and a preparation method thereof.
背景技术Background technique
20世纪90年代以来，随着航空航天技术的迅猛发展和临近空间(20km～100km)飞行器技术的开发应用，具有5马赫以上速度的高超音速飞行器成为各国家航天和国防部门竞相发展的重点。Since the 1990s, with the rapid development of aerospace technology and the development and application of near-space (20km~100km) aircraft technology, hypersonic aircraft with speeds above Mach 5 have become the focus of competition for development in aerospace and defense departments of various countries.
从高超音速飞行器结构来看，为阻止热量传导到飞行器的其余部分，弹头与弹体的过渡部分采用铬镍铁合金制造。巡航弹体部分的框架、板壁以及导弹弹体与级间部分的蒙皮、包括推进器的四个全动尾翼均为铝制。级间部分的一些结构和推进器的尾锥上使用钛金属材料，推进器的外表面用钢制造。同时，可重复利用的高超音速飞行器还需经历高低温转变，这要求陶瓷涂层材料一方面需要与飞行器金属基体具有良好的界面结合和热匹配，另一方面可以自我修复达到重复使用的效果。基于此，开发设计出可宽频域吸波且可与金属良好界面结合并能自我修复的耐高温陶瓷涂层是实现飞行器隐身和重复利用的关键。From the perspective of the structure of hypersonic aircraft, in order to prevent heat from being transferred to the rest of the aircraft, the transition part between the warhead and the body is made of chromium-nickel-iron alloy. The frame and panel walls of the cruise body, as well as the skin of the missile body and the interstage part, including the four fully movable tail fins of the thruster are all made of aluminum. Titanium metal materials are used on some structures of the interstage part and the tail cone of the thruster, and the outer surface of the thruster is made of steel. At the same time, reusable hypersonic aircraft also need to undergo high and low temperature transitions, which requires that the ceramic coating material needs to have good interface bonding and thermal matching with the metal matrix of the aircraft on the one hand, and can self-repair to achieve the effect of reuse on the other hand. Based on this, the development and design of high-temperature resistant ceramic coatings that can absorb waves in a wide frequency domain, have good interface bonding with metals, and can self-repair is the key to achieving aircraft stealth and reuse.
陶瓷涂层的制备是快速加热和快速冷却的过程，不可避免的产生热应力，在空间复杂服役环境下，交变载荷和温度变化会破坏涂层与基材的结合力，导致涂层在长期使用过程中脱落。如何拓展和改善超高温陶瓷材料的吸波频域和本征脆性，合理选择、设计陶瓷基复合材料的物系，实现涂层的设计和制备，提高韧性和抗氧化性能是该研究领域面临的一个重要挑战。The preparation of ceramic coatings is a process of rapid heating and rapid cooling, which inevitably generates thermal stress. In the complex service environment of space, alternating loads and temperature changes will destroy the bonding between the coating and the substrate, causing the coating to fall off during long-term use. How to expand and improve the absorption frequency domain and intrinsic brittleness of ultra-high temperature ceramic materials, reasonably select and design the material system of ceramic-based composite materials, realize the design and preparation of coatings, and improve toughness and antioxidant properties are important challenges facing this research field.
发明内容Summary of the invention
本发明基于复合吸波材料可以通过电磁损耗或微波干涉机制将入射电磁波能量转变成热能或其他形式能量从而有效耗散掉这一机制，通过调控超音速等离子喷涂工艺以及原料粉体配比，成功开发出Ti2AlC增强Al2O3基体的高温宽频域吸波自修复可重复利用的复合材料涂层及其制备方法。The present invention is based on the fact that composite absorbing materials can convert incident electromagnetic wave energy into heat energy or other forms of energy through electromagnetic loss or microwave interference mechanism, thereby effectively dissipating this mechanism. By regulating the supersonic plasma spraying process and the raw material powder ratio, a high-temperature, wide-band absorbing, self-repairing, reusable composite material coating with Ti2AlC reinforced Al2O3 matrix and its preparation method are successfully developed.
本发明提供一种Al2O3和Ti2AlC复合吸波涂层，该复合吸波涂层包括以质量百分比计的以下组份原料：50％～90％的Al2O3，10％～50％的Ti2AlC；其中，所述Al2O3和Ti2AlC的组份之和为100％。The invention provides an Al2O3 and Ti2AlC composite absorbing coating, which comprises the following raw materials by mass percentage: 50% to 90% Al2O3 and 10% to 50% Ti2AlC; wherein the sum of the Al2O3 and Ti2AlC components is 100%.
本发明提供另一种Al2O3和Ti2AlC复合吸波涂层，该复合吸波涂层包括以质量百分比计的以下组份：50％～93％的Al2O3，5％～48％的Ti2AlC，0.1％～1％的Ti3AlC2和0.1％～1％的TiC。需要说明的是，这是因为一部分原料粉体中的Ti2AlC在喷涂过程中会因为高温分解成Al2O3和Ti3AlC2以及TiC，因此涂层中Ti2AlC质量百分比会减少，Ti3AlC2、TiC、Al2O3三种物质的质量百分比会增加，增加的这部分Al2O3来源于Ti2AlC，喷涂得到的涂层中Ti3AlC2和TiC不是杂质，而是Ti2AlC分解产物。The present invention provides another Al2O3 and Ti2AlC composite absorbing coating, which comprises the following components in mass percentage: 50% to 93% Al2O3 , 5% to 48% Ti2AlC , 0.1% to 1 % Ti3AlC2 and 0.1% to 1% TiC . It should be noted that this is because a portion of Ti2AlC in the raw material powder will decompose into Al2O3 , Ti3AlC2 and TiC due to high temperature during the spraying process, so the mass percentage of Ti2AlC in the coating will decrease, and the mass percentages of Ti3AlC2 , TiC and Al2O3 will increase . The increased portion of Al2O3 comes from Ti2AlC , and Ti3AlC2 and TiC in the sprayed coating are not impurities, but decomposition products of Ti2AlC .
进一步的，所述Al2O3的粒径为15μm～45μm，所述Ti2AlC的粒径为15μm～40μm。Furthermore, the particle size of the Al 2 O 3 is 15 μm to 45 μm, and the particle size of the Ti 2 AlC is 15 μm to 40 μm.
进一步的，该复合吸波涂层的显微硬度为600HV～900HV，拉伸界面结合强度为25MPa～35MPa。Furthermore, the microhardness of the composite absorbing coating is 600HV to 900HV, and the tensile interface bonding strength is 25MPa to 35MPa.
进一步的，根据GJB5022标准，对300mm×300mm×5mm的所述复合吸波涂层试样，在频率范围为8GHz～18GHz内利用雷达吸波材料RAM反射率弓形法的测试条件下，该复合吸波涂层的有效吸波带宽大于2GHz，最小反射损耗小于-20dB。Furthermore, according to the GJB5022 standard, for the composite absorbing coating sample of 300mm×300mm×5mm, under the test conditions of the radar absorbing material RAM reflectivity bow method in the frequency range of 8GHz to 18GHz, the effective absorbing bandwidth of the composite absorbing coating is greater than 2GHz, and the minimum reflection loss is less than -20dB.
进一步的，该复合吸波涂层的厚度为0.5mm～2mm。Furthermore, the thickness of the composite absorbing coating is 0.5 mm to 2 mm.
本发明还提供如上述的Al2O3和Ti2AlC复合吸波涂层的制备方法，该方法包括以下步骤：按配方预备各组份原料，将Al2O3和Ti2AlC置于行星球磨机中进行球磨处理至充分混合，得到复合原料粉体；以镍基合金作为基体，将所述基体置于马弗炉中预热至150℃；将所述复合原料粉体置于超音速等离子喷涂设备送粉器中，将预热后的基体固定在超音速等离子喷涂设备上，进行超音速等离子喷涂处理，得到所述Al2O3和Ti2AlC复合吸波涂层；其中，所述喷涂处理的参数包括：氩气气流量70L/min～85L/min，氢气气流量10L/min～20L/min，电压100V～120V，电流350A～450A，送粉压力0.4MPa～0.5MPa，送粉流量18g/min～20g/min，喷涂距离80mm～100mm；The present invention also provides a method for preparing the Al2O3 and Ti2AlC composite absorbing coating as described above, the method comprising the following steps: preparing raw materials of each component according to a formula, placing Al2O3 and Ti2AlC in a planetary ball mill for ball milling until they are fully mixed, to obtain a composite raw material powder; using a nickel-based alloy as a matrix, placing the matrix in a muffle furnace for preheating to 150°C; placing the composite raw material powder in a powder feeder of a supersonic plasma spraying device, fixing the preheated matrix on the supersonic plasma spraying device, and performing supersonic plasma spraying to obtain the Al2O3 and Ti2AlC composite absorbing coating. AlC composite absorbing coating; wherein the parameters of the spraying process include: argon gas flow rate 70L/min~85L/min, hydrogen gas flow rate 10L/min~20L/min, voltage 100V~120V, current 350A~450A, powder feeding pressure 0.4MPa~0.5MPa, powder feeding flow rate 18g/min~20g/min, spraying distance 80mm~100mm;
进一步的，所述球磨处理的时间为8h～12h。Furthermore, the ball milling treatment time is 8h to 12h.
本发明与目前现有技术相比具有以下特点：Compared with the current prior art, the present invention has the following characteristics:
本发明提供一种Al2O3和Ti2AlC复合吸波涂层及其制备方法，该复合吸波涂层直接采用市面上的现有原料粉体作为原料，原料获得方式简单、成本低，产品具有自修复可重复利用的特点。该复合吸波涂层的制备方法通过优化超音速等离子喷涂工艺以及原料粉体配比，方法简单、易操作，适用于工业生产。The present invention provides an Al2O3 and Ti2AlC composite absorbing coating and a preparation method thereof. The composite absorbing coating directly uses existing raw material powders on the market as raw materials. The raw material acquisition method is simple and low in cost. The product has the characteristics of self-repair and reusability. The preparation method of the composite absorbing coating is simple and easy to operate by optimizing the supersonic plasma spraying process and the raw material powder ratio, and is suitable for industrial production.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，除非有特别申明，附图中的图不构成比例限制。One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplifications do not constitute limitations on the embodiments. Unless otherwise stated, the pictures in the drawings do not constitute proportional limitations.
图1为本发明实施例1的50wt.％Al2O3/50wt.％Ti2AlC复合吸波涂层的扫描电镜图；FIG1 is a scanning electron microscope image of a 50wt.% Al 2 O 3 /50wt.% Ti 2 AlC composite microwave absorbing coating according to Example 1 of the present invention;
图2为本发明实施例2的60wt.％Al2O3/40wt.％Ti2AlC复合吸波涂层的扫描电镜图；FIG2 is a scanning electron microscope image of a 60wt.% Al 2 O 3 /40wt.% Ti 2 AlC composite microwave absorbing coating of Example 2 of the present invention;
图3为本发明实施例3的70wt.％Al2O3/30wt.％Ti2AlC复合吸波涂层的扫描电镜图；FIG3 is a scanning electron microscope image of a 70wt.% Al 2 O 3 /30wt.% Ti 2 AlC composite microwave absorbing coating of Example 3 of the present invention;
图4为本发明实施例4的80wt.％Al2O3/20wt.％Ti2AlC复合吸波涂层的扫描电镜图；FIG4 is a scanning electron microscope image of the 80wt.% Al 2 O 3 /20wt.% Ti 2 AlC composite microwave absorbing coating of Example 4 of the present invention;
图5为本发明实施例5的90wt.％Al2O3/10wt.％Ti2AlC复合吸波涂层的扫描电镜图。FIG. 5 is a scanning electron microscope image of the 90 wt. % Al 2 O 3 /10 wt. % Ti 2 AlC composite microwave absorbing coating of Example 5 of the present invention.
具体实施方式Detailed ways
发明人发现，为了满足高温、长时间、反复使用要求，Al2O3陶瓷是公认的具有低密度、优异高温强度和良好高温抗氧化性能的陶瓷基体材料。所以设计Al2O3陶瓷基复合材料是首选，但是单纯的Al2O3陶瓷在涂层制备过程中成形性极差，且Al2O3吸波性能极差。高性能的吸波材料是由两种或两种以上材料，通过恰当的成分和结构设计而构成的复合材料。新型的三元层状MAX相陶瓷是一种兼具高强度和高韧性以及类金属的优良导电性能的良好损伤容限陶瓷材料，典型的材料有Ti3SiC2、Ti2AlC、Ti3(SiAl)C2固溶体和Cr2AlB2，其密度为4～5g/cm3，杨氏模量为280～340GPa，室温断裂韧度为6.0～7.88MPa·m1/2。此外，新型的三元MAX相陶瓷具备优良的吸波、高温自愈合修复、抗氧化和与金属基体润湿结合好的综合优势。如何通过优化超音速等离子喷涂工艺以及原料粉体配比，来制备出Ti2AlC增强Al2O3基体的高温宽频域吸波自修复可重复利用的复合材料涂层，成为开发这种新型Al2O3和Ti2AlC复合吸波涂层的重点。The inventors found that in order to meet the requirements of high temperature, long time and repeated use, Al 2 O 3 ceramics are recognized as ceramic matrix materials with low density, excellent high temperature strength and good high temperature oxidation resistance. Therefore, designing Al 2 O 3 ceramic-based composite materials is the first choice, but the formability of pure Al 2 O 3 ceramics is extremely poor during the coating preparation process, and Al 2 O 3 has extremely poor wave absorbing performance. High-performance wave absorbing materials are composite materials composed of two or more materials through appropriate composition and structural design. The new ternary layered MAX phase ceramic is a good damage tolerance ceramic material with high strength and high toughness and excellent metal-like electrical conductivity. Typical materials include Ti 3 SiC 2 , Ti 2 AlC, Ti 3 (SiAl) C 2 solid solution and Cr 2 AlB 2 , with a density of 4 to 5 g/cm 3 , a Young's modulus of 280 to 340 GPa, and a room temperature fracture toughness of 6.0 to 7.88 MPa·m 1/2 . In addition, the new ternary MAX phase ceramics have the comprehensive advantages of excellent microwave absorption, high temperature self-healing repair, anti-oxidation and good wetting and bonding with metal substrates. How to prepare a high temperature, wide frequency domain microwave absorption self-healing reusable composite coating of Ti2AlC reinforced Al2O3 matrix by optimizing the supersonic plasma spraying process and the raw material powder ratio has become the focus of the development of this new Al2O3 and Ti2AlC composite microwave absorbing coating.
本发明提供一种Al2O3和Ti2AlC复合吸波涂层，该复合吸波涂层包括以质量百分比计的以下组份原料：50％～90％的Al2O3，10％～50％的Ti2AlC；其中，所述Al2O3和Ti2AlC的组份之和为100％。The invention provides an Al2O3 and Ti2AlC composite absorbing coating, which comprises the following raw materials by mass percentage: 50% to 90% Al2O3 and 10% to 50% Ti2AlC; wherein the sum of the Al2O3 and Ti2AlC components is 100%.
需要说明的是，Ti2AlC也可以用其他MAX相陶瓷所替代，MAX相陶瓷包括且不限于Ti3AlC2、Ti3SiC2、Cr2AlC和Mo2AlB中的一种或多种。上述列举的Ti2AlC、Ti3AlC2、Ti3SiC2、Cr2AlC和Mo2AlB为同一类化学物质，所以相应的以其为原料，可以制备出同等性能的复合吸波涂层。It should be noted that Ti 2 AlC can also be replaced by other MAX phase ceramics, including but not limited to one or more of Ti 3 AlC 2 , Ti 3 SiC 2 , Cr 2 AlC and Mo 2 AlB. The above-mentioned Ti 2 AlC, Ti 3 AlC 2 , Ti 3 SiC 2 , Cr 2 AlC and Mo 2 AlB are the same chemical substances, so composite absorbing coatings with equivalent performance can be prepared using them as raw materials.
本发明还提供一种Al2O3和Ti2AlC复合吸波涂层，该复合吸波涂层包括以质量百分比计的以下组份：50％～93％的Al2O3，5％～48％的Ti2AlC，0.1％～1％的Ti3AlC2和0.1％～1％的TiC。The present invention also provides an Al2O3 and Ti2AlC composite absorbing coating, which comprises the following components by mass percentage: 50% to 93 % Al2O3 , 5% to 48% Ti2AlC , 0.1% to 1% Ti3AlC2 and 0.1% to 1% TiC .
其中，所述Al2O3的粒径为15μm～45μm，所述Ti2AlC的粒径为15μm～40μm。Wherein, the particle size of the Al 2 O 3 is 15 μm to 45 μm, and the particle size of the Ti 2 AlC is 15 μm to 40 μm.
本发明还提供如上述的Al2O3和Ti2AlC复合吸波涂层的制备方法，该方法包括以下步骤：The present invention also provides a method for preparing the Al 2 O 3 and Ti 2 AlC composite microwave absorbing coating as described above, the method comprising the following steps:
S1、按配方预备各组份原料，将Al2O3和Ti2AlC置于行星球磨机中进行球磨处理至充分混合，得到复合原料粉体；S1. Prepare the raw materials of each component according to the formula, place Al 2 O 3 and Ti 2 AlC in a planetary ball mill for ball milling until they are fully mixed to obtain composite raw material powder;
S2、以镍基合金作为基体，将所述基体置于马弗炉中预热至150℃；S2, using a nickel-based alloy as a substrate, placing the substrate in a muffle furnace and preheating it to 150° C.;
S3、将所述复合原料粉体置于超音速等离子喷涂设备送粉器中，将预热后的基体固定在超音速等离子喷涂设备上，进行超音速等离子喷涂处理，得到所述Al2O3和Ti2AlC复合吸波涂层；S3, placing the composite raw material powder in a powder feeder of a supersonic plasma spraying device, fixing the preheated substrate on the supersonic plasma spraying device, and performing supersonic plasma spraying treatment to obtain the Al 2 O 3 and Ti 2 AlC composite radar absorbing coating;
其中，所述喷涂处理的参数包括：氩气气流量70L/min～85L/min，氢气气流量10L/min～20L/min，电压100V～120V，电流350A～450A，送粉压力0.4MPa～0.5MPa，送粉流量18g/min～20g/min，喷涂距离80mm～100mm。Among them, the parameters of the spraying treatment include: argon gas flow rate 70L/min~85L/min, hydrogen gas flow rate 10L/min~20L/min, voltage 100V~120V, current 350A~450A, powder feeding pressure 0.4MPa~0.5MPa, powder feeding flow rate 18g/min~20g/min, and spraying distance 80mm~100mm.
下面结合具体实施方式对本发明进行详细说明。The present invention is described in detail below in conjunction with specific implementation modes.
实施例1Example 1
实施例1提供一种Al2O3和Ti2AlC复合吸波涂层及其制备方法，该制备方法包括：Embodiment 1 provides an Al 2 O 3 and Ti 2 AlC composite microwave absorbing coating and a preparation method thereof, the preparation method comprising:
按复合吸波涂层原料粉体的质量百分比：Al2O3：50％，Ti2AlC：50％，两种组分之和为100％，称取所需的Al2O3和Ti2AlC；According to the mass percentage of the raw material powder of the composite absorbing coating: Al 2 O 3 : 50%, Ti 2 AlC: 50%, the sum of the two components is 100%, weigh the required Al 2 O 3 and Ti 2 AlC;
将上述两种原料粉体放置于行星球磨机中球磨8～12h，实现充分混合；The two raw material powders are placed in a planetary ball mill and ball milled for 8 to 12 hours to achieve full mixing;
将镍基合金基体放置于马弗炉中预热至150℃；The nickel-based alloy substrate was placed in a muffle furnace and preheated to 150°C;
将上述复合原料粉体放置于超音速等离子喷涂设备送粉器，将预热后的镍基合金基体采用夹具固定在超音速等离子喷涂设备上，使用上述的等离子喷涂参数，随后进行超音速等离子喷涂复合吸波涂层制备，最终得到复合吸波涂层，如图1所示，涂层内部的Ti2AlC呈现层状形貌，并弥散分布在Al2O3中。该复合吸波涂层显微硬度为650±50HV，涂层结合强度为30±5MPa。The composite raw material powder is placed in the powder feeder of the supersonic plasma spraying equipment, the preheated nickel-based alloy substrate is fixed on the supersonic plasma spraying equipment by a clamp, and the above-mentioned plasma spraying parameters are used, and then the supersonic plasma spraying composite absorbing coating is prepared, and finally the composite absorbing coating is obtained, as shown in Figure 1, the Ti 2 AlC inside the coating presents a layered morphology and is dispersed in Al 2 O 3. The microhardness of the composite absorbing coating is 650±50HV, and the coating bonding strength is 30±5MPa.
实施例2Example 2
实施例2提供一种Al2O3和Ti2AlC复合吸波涂层及其制备方法，该制备方法包括：Embodiment 2 provides an Al 2 O 3 and Ti 2 AlC composite microwave absorbing coating and a preparation method thereof, the preparation method comprising:
按复合吸波涂层原料粉体的质量百分比：Al2O3：60％，Ti2AlC：40％，两种组分之和为100％，称取所需的Al2O3和Ti2AlC；According to the mass percentage of the raw material powder of the composite absorbing coating: Al 2 O 3 : 60%, Ti 2 AlC: 40%, the sum of the two components is 100%, weigh the required Al 2 O 3 and Ti 2 AlC;
将上述两种原料粉体放置于行星球磨机中球磨8～12h，实现充分混合；The two raw material powders are placed in a planetary ball mill and ball milled for 8 to 12 hours to achieve full mixing;
将镍基合金基体放置于马弗炉中预热至150℃；The nickel-based alloy substrate was placed in a muffle furnace and preheated to 150°C;
将上述复合原料粉体放置于超音速等离子喷涂设备送粉器，将预热后的镍基合金基体采用夹具固定在超音速等离子喷涂设备上，使用上述的喷涂参数，随后进行超音速等离子喷涂复合吸波涂层制备，最终得到复合吸波涂层，如图2所示，涂层内部的Ti2AlC呈现层状形貌，并弥散分布在Al2O3中。该复合吸波涂层显微硬度为700±50HV，涂层结合强度为30±5MPa。The composite raw material powder is placed in the powder feeder of the supersonic plasma spraying equipment, the preheated nickel-based alloy substrate is fixed on the supersonic plasma spraying equipment by a clamp, and the above-mentioned spraying parameters are used, and then the supersonic plasma spraying composite absorbing coating is prepared, and finally the composite absorbing coating is obtained, as shown in Figure 2, the Ti 2 AlC inside the coating presents a layered morphology and is dispersed in Al 2 O 3. The microhardness of the composite absorbing coating is 700±50HV, and the coating bonding strength is 30±5MPa.
实施例3Example 3
实施例3提供一种Al2O3和Ti2AlC复合吸波涂层及其制备方法，该制备方法包括：Embodiment 3 provides an Al 2 O 3 and Ti 2 AlC composite microwave absorbing coating and a preparation method thereof, the preparation method comprising:
按复合吸波涂层原料粉体的质量百分比：Al2O3：70％，Ti2AlC：30％，两种组分之和为100％，称取所需的Al2O3和Ti2AlC；According to the mass percentage of the raw material powder of the composite absorbing coating: Al 2 O 3 : 70%, Ti 2 AlC: 30%, the sum of the two components is 100%, weigh the required Al 2 O 3 and Ti 2 AlC;
将上述两种原料粉体放置于行星球磨机中球磨8～12h，实现充分混合；The two raw material powders are placed in a planetary ball mill and ball milled for 8 to 12 hours to achieve full mixing;
将镍基合金基体放置于马弗炉中预热至150℃；The nickel-based alloy substrate was placed in a muffle furnace and preheated to 150°C;
将上述复合原料粉体放置于超音速等离子喷涂设备送粉器，将预热后的镍基合金基体采用夹具固定在超音速等离子喷涂设备上，使用上述的喷涂参数，随后进行超音速等离子喷涂复合吸波涂层制备，最终得到复合吸波涂层，如图3所示，涂层内部的Ti2AlC呈现层状形貌，并弥散分布在Al2O3中。该复合吸波涂层显微硬度为750±50HV，涂层结合强度为30±5MPa。The composite raw material powder is placed in the powder feeder of the supersonic plasma spraying equipment, the preheated nickel-based alloy substrate is fixed on the supersonic plasma spraying equipment by a clamp, and the above-mentioned spraying parameters are used, and then the supersonic plasma spraying composite absorbing coating is prepared, and finally the composite absorbing coating is obtained, as shown in Figure 3, the Ti 2 AlC inside the coating presents a layered morphology and is dispersed in Al 2 O 3. The microhardness of the composite absorbing coating is 750±50HV, and the coating bonding strength is 30±5MPa.
实施例4Example 4
实施例4提供一种Al2O3和Ti2AlC复合吸波涂层及其制备方法，该制备方法包括：Embodiment 4 provides an Al 2 O 3 and Ti 2 AlC composite microwave absorbing coating and a preparation method thereof, the preparation method comprising:
按复合吸波涂层原料粉体的质量百分比：Al2O3：80％，Ti2AlC：20％，两种组分之和为100％，称取所需的Al2O3和Ti2AlC；According to the mass percentage of the raw material powder of the composite absorbing coating: Al 2 O 3 : 80%, Ti 2 AlC: 20%, the sum of the two components is 100%, weigh the required Al 2 O 3 and Ti 2 AlC;
将上述两种原料粉体放置于行星球磨机中球磨8～12h，实现充分混合；The two raw material powders are placed in a planetary ball mill and ball milled for 8 to 12 hours to achieve full mixing;
将镍基合金基体放置于马弗炉中预热至150℃；The nickel-based alloy substrate was placed in a muffle furnace and preheated to 150°C;
将上述复合原料粉体放置于超音速等离子喷涂设备送粉器，将预热后的镍基合金基体采用夹具固定在超音速等离子喷涂设备上，使用上述的等离子喷涂参数，随后进行超音速等离子喷涂复合吸波涂层制备，最终得到复合吸波涂层，如图4所示，涂层内部的Ti2AlC呈现层状形貌，并弥散分布在Al2O3中。该复合吸波涂层显微硬度为800±50HV，涂层结合强度为30±5MPa。The composite raw material powder is placed in the powder feeder of the supersonic plasma spraying equipment, the preheated nickel-based alloy substrate is fixed on the supersonic plasma spraying equipment by a clamp, and the above-mentioned plasma spraying parameters are used, and then the supersonic plasma spraying composite absorbing coating is prepared, and finally the composite absorbing coating is obtained, as shown in Figure 4, the Ti 2 AlC inside the coating presents a layered morphology and is dispersed in Al 2 O 3. The microhardness of the composite absorbing coating is 800±50HV, and the coating bonding strength is 30±5MPa.
实施例5Example 5
实施例5提供一种Al2O3和Ti2AlC复合吸波涂层及其制备方法，该制备方法包括：Example 5 provides an Al 2 O 3 and Ti 2 AlC composite microwave absorbing coating and a preparation method thereof, the preparation method comprising:
按复合吸波涂层原料粉体的质量百分比：Al2O3：90％，Ti2AlC：10％，两种组分之和为100％，称取所需的Al2O3和Ti2AlC；According to the mass percentage of the raw material powder of the composite absorbing coating: Al 2 O 3 : 90%, Ti 2 AlC: 10%, the sum of the two components is 100%, weigh the required Al 2 O 3 and Ti 2 AlC;
将上述两种原料粉体放置于行星球磨机中球磨8～12h，实现充分混合；The two raw material powders are placed in a planetary ball mill and ball milled for 8 to 12 hours to achieve full mixing;
将镍基合金基体放置于马弗炉中预热至150℃；The nickel-based alloy substrate was placed in a muffle furnace and preheated to 150°C;
将上述复合原料粉体放置于超音速等离子喷涂设备送粉器，将预热后的镍基合金基体采用夹具固定在超音速等离子喷涂设备上，使用上述的等离子喷涂参数，随后进行超音速等离子喷涂复合吸波涂层制备，最终得到复合吸波涂层，如图5所示，涂层内部的Ti2AlC呈现层状形貌，并弥散分布在Al2O3中。该复合吸波涂层显微硬度为850±50HV，涂层结合强度为30±5MPa。The composite raw material powder is placed in the powder feeder of the supersonic plasma spraying equipment, the preheated nickel-based alloy substrate is fixed on the supersonic plasma spraying equipment by a clamp, and the above-mentioned plasma spraying parameters are used, and then the supersonic plasma spraying composite absorbing coating is prepared, and finally the composite absorbing coating is obtained, as shown in Figure 5, the Ti 2 AlC inside the coating presents a layered morphology and is dispersed in Al 2 O 3. The microhardness of the composite absorbing coating is 850±50HV, and the coating bonding strength is 30±5MPa.
本领域的普通技术人员可以理解，上述各实施方式是实现本申请的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本申请的精神和范围。任何本领域技术人员，在不脱离本申请的精神和范围内，均可作各自更动与修改，因此本申请的保护范围应当以权利要求限定的范围为准。Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and in practical applications, various changes may be made to the embodiments in form and detail without departing from the spirit and scope of the present application. Any person skilled in the art may make their own changes and modifications without departing from the spirit and scope of the present application, and therefore the scope of protection of the present application shall be subject to the scope defined in the claims.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104947029A (en) * | 2015-06-26 | 2015-09-30 | 中国科学院宁波材料技术与工程研究所 | Method of preparing MAX phase ceramic coating by using hot spraying |
| CN105189820A (en) * | 2013-05-28 | 2015-12-23 | 西屋电气有限责任公司 | A kinetically applied gradated Zr-Al-C ceramic or Ti-Al-C ceramic or amorphous or semi-amorphous stainless steel with nuclear grade zirconium alloy metal structure |
| CN105861977A (en) * | 2016-06-07 | 2016-08-17 | 苏州大学 | High-temperature-resistant microwave absorbing coating and preparation method and application thereof |
| DE102017204279A1 (en) * | 2017-03-15 | 2018-09-20 | Siemens Aktiengesellschaft | CMC with MAX phases and ceramic layer |
| CN109778096A (en) * | 2019-02-13 | 2019-05-21 | 昆明理工大学 | A kind of thermal spraying nanocomposite ceramic coating material and preparation method thereof |
| CN111004990A (en) * | 2019-12-04 | 2020-04-14 | 天津大学 | MAX Phase Coating for Thermal Barrier Coating Resistance to Fused CMAS Corrosion and Thermal Spray Preparation Method |
| KR20220077288A (en) * | 2020-12-01 | 2022-06-09 | 울산과학기술원 | Coating material, coating solution, and film having Ti3C2Tx-B4C for neutron shielding |
| CN115110019A (en) * | 2022-07-27 | 2022-09-27 | 陕西天璇涂层科技有限公司 | A kind of thermal protection coating of centrifuge for rock wool wire drawing and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020047278A1 (en) * | 2018-08-30 | 2020-03-05 | University Of Virginia Patent Foundation | Functional barrier coating and related methods thereof |
-
2023
- 2023-03-09 CN CN202310220710.4A patent/CN116285468B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105189820A (en) * | 2013-05-28 | 2015-12-23 | 西屋电气有限责任公司 | A kinetically applied gradated Zr-Al-C ceramic or Ti-Al-C ceramic or amorphous or semi-amorphous stainless steel with nuclear grade zirconium alloy metal structure |
| CN104947029A (en) * | 2015-06-26 | 2015-09-30 | 中国科学院宁波材料技术与工程研究所 | Method of preparing MAX phase ceramic coating by using hot spraying |
| CN105861977A (en) * | 2016-06-07 | 2016-08-17 | 苏州大学 | High-temperature-resistant microwave absorbing coating and preparation method and application thereof |
| DE102017204279A1 (en) * | 2017-03-15 | 2018-09-20 | Siemens Aktiengesellschaft | CMC with MAX phases and ceramic layer |
| CN109778096A (en) * | 2019-02-13 | 2019-05-21 | 昆明理工大学 | A kind of thermal spraying nanocomposite ceramic coating material and preparation method thereof |
| CN111004990A (en) * | 2019-12-04 | 2020-04-14 | 天津大学 | MAX Phase Coating for Thermal Barrier Coating Resistance to Fused CMAS Corrosion and Thermal Spray Preparation Method |
| KR20220077288A (en) * | 2020-12-01 | 2022-06-09 | 울산과학기술원 | Coating material, coating solution, and film having Ti3C2Tx-B4C for neutron shielding |
| CN115110019A (en) * | 2022-07-27 | 2022-09-27 | 陕西天璇涂层科技有限公司 | A kind of thermal protection coating of centrifuge for rock wool wire drawing and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| Fabrication, microstructure and compressive properties of Ti2AlC/TiAl composite with a bioinspired laminated structure;Bo Hou等;Vacuum;20220731;第201卷;第1-11页 * |
| Wenbo Yu等.High temperature damping behavior and dynamic Young's modulus of magnesium matrix composite reinforced by Ti2AlC MAX phase particles.Mechanics of Materials.2019,第129卷第246-253页. * |
| 周静主编 .近代材料科学研究技术进展.武汉理工大学出版社 ,2012,第337页. * |
| 碳/氮化物陶瓷粉体的熔盐法合成研究进展;程登峰;柯昌明;张锦化;王景然;中国陶瓷(第001期);第1-12页 * |
| 苛刻环境下材料表面防护技术的研究进展;鞠鹏飞;张达威;吉利;马国政;陈建敏;徐滨士;;中国表面工程;20190831;32(第04期);第1-16页 * |
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