CN105256356A - Titanium alloy metal matrix ceramic coating tool and preparation method thereof - Google Patents
Titanium alloy metal matrix ceramic coating tool and preparation method thereof Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 64
- 239000002184 metal Substances 0.000 title claims abstract description 64
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 51
- 238000005524 ceramic coating Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 239000011159 matrix material Substances 0.000 title abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 claims abstract description 20
- 229910052574 oxide ceramic Inorganic materials 0.000 claims abstract description 12
- 239000011224 oxide ceramic Substances 0.000 claims abstract description 12
- 238000011065 in-situ storage Methods 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000003792 electrolyte Substances 0.000 claims description 22
- 238000005516 engineering process Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005238 degreasing Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 8
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 abstract description 5
- 229910001388 sodium aluminate Inorganic materials 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 4
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 22
- 238000000576 coating method Methods 0.000 description 22
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 12
- 239000000758 substrate Substances 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910010293 ceramic material Inorganic materials 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- 229910010037 TiAlN Inorganic materials 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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Abstract
本发明公开一种钛合金金属基陶瓷涂层刀具及其制备方法，属于金属表面陶瓷涂层领域。本发明主要是在以铝酸钠为主系的电解液中，通过施加高频高压脉冲电压对阳极金属刀具材料进行表面微区阳极等离子体微弧氧化处理，通过放电区局部高温烧结作用在金属刀具表面原位生长以基体金属氧化物为主的陶瓷膜层，从而实现对金属刀具进行陶瓷涂层，制备陶瓷涂层刀具。本发明所采用设备主要包括：双极性不对称脉冲电源、不锈钢电解槽、搅拌系统和冷却系统。利用本发明在金属刀具表面制备的氧化物陶瓷层，具有厚度大（最大厚度可达50um）、致密均匀、结合力强等特性，能极大提高刀具的综合机械切削性能。The invention discloses a titanium alloy metal-based ceramic coating tool and a preparation method thereof, belonging to the field of metal surface ceramic coating. The present invention mainly uses sodium aluminate as the main system to carry out micro-area anode plasma micro-arc oxidation treatment on the surface of the anode metal tool material by applying high-frequency and high-voltage pulse voltage. A ceramic film layer mainly composed of matrix metal oxide is grown in situ on the surface of the tool, so as to realize ceramic coating on the metal tool and prepare a ceramic coated tool. The equipment used in the present invention mainly includes: a bipolar asymmetrical pulse power supply, a stainless steel electrolyzer, a stirring system and a cooling system. The oxide ceramic layer prepared on the surface of the metal cutting tool by the present invention has the characteristics of large thickness (up to 50um), uniform density and strong bonding force, and can greatly improve the comprehensive mechanical cutting performance of the cutting tool.
Description
技术领域 technical field
本发明涉及一种钛合金金属基陶瓷涂层刀具及其制备方法，属于金属表面陶瓷涂层领域。 The invention relates to a titanium alloy metal-based ceramic coating cutter and a preparation method thereof, belonging to the field of ceramic coatings on metal surfaces.
背景技术 Background technique
目前，陶瓷刀具由于具有硬度高、耐磨性能及高温力学性能优良、化学稳定性好、不易与金属发生粘接等特点，能满足高速切削、干式切削和硬态切削的要求，在高速高精切削加工领域得到广泛应用。但是，陶瓷材料因其硬度高、脆性大、韧性小，在加工过程中易形成微裂纹和诸多其他缺陷，因此，陶瓷刀具制造成本居高不下，且难于制造刃口较为复杂的特种加工刀具。 At present, ceramic cutting tools can meet the requirements of high-speed cutting, dry cutting and hard cutting due to their high hardness, excellent wear resistance and high-temperature mechanical properties, good chemical stability, and not easy to bond with metals. It is widely used in the field of fine cutting. However, due to its high hardness, high brittleness, and low toughness, ceramic materials are prone to microcracks and many other defects during processing. Therefore, the manufacturing cost of ceramic knives remains high, and it is difficult to manufacture special processing knives with complex cutting edges.
解决此问题的有效途径就是对金属刀具进行硬质材料涂层，所制备涂层刀具即可充分利用涂层材料的硬度高、耐磨耐热耐蚀性好等优点，又兼具金属材料的强度、韧性和易加工等特点。目前，刀具涂层技术常用的主要是化学气相沉积（CVD）和物理气相沉积（PVD），其他的还有等离子喷涂、火焰喷涂、电镀、溶盐电解等。这些涂层技术对改善切削刀具的综合机械性能、提高刀具使用寿命和提高切削加工效率等方面均有不错效果。但各存在明显缺陷，化学气相沉积技术制备的涂层与基体结合力低，沉积效率不高，涂层厚度为5~10μm，由于氯的侵蚀及氢脆变形易导致涂层碎裂，涂层硬质合金时还易产生脱碳现象；物理气相沉积技术制备的涂层厚度不均匀，关键是涂层较薄（2-10um），结合力差，涂层硬度较低，涂层优越性未得到充分体现，且设备相对复杂，加工成本较高。 An effective way to solve this problem is to coat metal tools with hard materials. The prepared coated tools can make full use of the advantages of high hardness, good wear resistance, heat resistance and corrosion resistance of coating materials, and also have the advantages of metal materials. Strength, toughness and easy processing. At present, the commonly used tool coating technologies are mainly chemical vapor deposition (CVD) and physical vapor deposition (PVD). Others include plasma spraying, flame spraying, electroplating, and dissolved salt electrolysis. These coating technologies have good effects on improving the comprehensive mechanical properties of cutting tools, increasing tool life and improving cutting efficiency. However, there are obvious defects in each. The coating prepared by chemical vapor deposition technology has low bonding force with the substrate, and the deposition efficiency is not high. Carbide is also prone to decarburization; the thickness of the coating prepared by physical vapor deposition technology is uneven, the key is that the coating is thin (2-10um), the bonding force is poor, the hardness of the coating is low, and the superiority of the coating is not good. It is fully reflected, and the equipment is relatively complicated, and the processing cost is relatively high.
涂层刀具有四种，即高速钢上的涂层刀具、硬质合金上的涂层刀具，以及在陶瓷和超硬材料(金刚石或立方氮化硼)刀片上的涂层刀具。但前两种涂层刀具使用最多。涂层材料有TiC、TiN、TiCN、TiAlN、CrN、TiAlCrN及Al2O3（陶瓷的主要成分）。工艺最成熟和应用最广泛的硬质涂层材料是TiN，但TiN与基体结合强度不及TiC涂层，涂层易剥落，且硬度也不如TiC高，在切削温度较高时膜层易氧化而被烧蚀。TiC涂层有较高的硬度与耐磨性，抗氧化性也好，但其性脆，不耐冲击。TiAlN、CrN、TiAlCrN是国外新开发的硬质涂层新材料，研究和使用都还很少。 There are four types of coated knives, namely, coated knives on high-speed steel, coated knives on cemented carbide, and coated knives on ceramic and superhard materials (diamond or cubic boron nitride) blades. But the first two types of coated knives are used the most. Coating materials include TiC, TiN, TiCN, TiAlN, CrN, TiAlCrN and Al2O3 (main components of ceramics). The most mature and widely used hard coating material is TiN, but the bonding strength between TiN and the substrate is not as good as that of TiC coating, the coating is easy to peel off, and the hardness is not as high as TiC. was ablated. TiC coating has high hardness and wear resistance, and good oxidation resistance, but it is brittle and not resistant to impact. TiAlN, CrN, and TiAlCrN are new hard coating materials newly developed abroad, and their research and use are still seldom.
就陶瓷涂层刀具而言，其基体可以为高速钢、硬质合金、不锈钢等。以硬质合金基体陶瓷涂层刀具的研究较多，但现存的主要问题是涂层厚度较薄且表面陶瓷涂层与刀具基体金属的结合力较差，因而在较高切削速度下切削高硬度材料时易发生破损现象。 As far as ceramic coated tools are concerned, the substrate can be high-speed steel, hard alloy, stainless steel, etc. There are many studies on ceramic coating tools with cemented carbide substrates, but the main existing problems are that the thickness of the coating is thin and the bonding force between the surface ceramic coating and the tool base metal is poor, so high hardness can be cut at high cutting speeds. The material is prone to breakage.
发明内容 Contents of the invention
本发明要解决的技术问题是：现有陶瓷涂层刀具陶瓷涂层技术的涂层厚度较薄、陶瓷涂层厚度不均匀、且表面陶瓷涂层与刀具基体金属结合力差等缺陷问题。 The technical problem to be solved by the present invention is: the coating thickness of the existing ceramic coating tool ceramic coating technology is relatively thin, the thickness of the ceramic coating is uneven, and the bonding force between the surface ceramic coating and the base metal of the tool is poor and other defects.
本发明的目的在于提供一种钛合金金属基陶瓷涂层刀具，在钛合金金属刀具表面原位生长一层致密均匀的氧化物陶瓷膜层。 The object of the present invention is to provide a titanium alloy metal-based ceramic coating tool, in which a dense and uniform oxide ceramic film layer is grown in situ on the surface of the titanium alloy metal tool.
优选的，本发明所述钛合金金属基陶瓷涂层刀具的陶瓷涂层厚度大于等于30um。 Preferably, the thickness of the ceramic coating of the titanium alloy metal-based ceramic coating tool of the present invention is greater than or equal to 30 um.
本发明的另一目的在于提供一种所述钛合金金属基陶瓷涂层刀具的制备方法，具体包括以下步骤： Another object of the present invention is to provide a method for preparing the titanium alloy metal-based ceramic coating tool, which specifically includes the following steps:
（1）对钛合金属金刀具进行打磨、抛光、除油、清洗、烘干处理后备用。 (1) Grinding, polishing, degreasing, cleaning, and drying the titanium alloy metal tools for later use.
（2）以钛合金属金刀具工件作为阳极，不锈钢电解槽作为阴极，施加高压脉冲通过微弧氧化技术在钛合金金属刀具表面原位生长一层致密均匀的氧化物陶瓷膜层，微弧氧化过程中对电解液进行匀速搅拌，电解液的温度控制在25℃-40℃。 (2) Using the titanium alloy metal tool workpiece as the anode and the stainless steel electrolytic cell as the cathode, a high-voltage pulse is applied to grow a dense and uniform oxide ceramic film on the surface of the titanium alloy metal tool in situ through the micro-arc oxidation technology, and the micro-arc oxidation During the process, the electrolyte is stirred at a constant speed, and the temperature of the electrolyte is controlled at 25°C-40°C.
（3）步骤（2）处理得到的钛合金属金刀具用去离子水清洗后，在100℃-150℃温度条件下干燥15min-30min。 (3) After the titanium alloy metal cutting tool obtained in step (2) is cleaned with deionized water, it is dried at a temperature of 100° C. to 150° C. for 15 minutes to 30 minutes.
优选的，微弧氧化技术的脉冲电源工艺参数为正脉冲电压：480V-540V；负脉冲电压：80V-150V；脉冲频率：400-600Hz；占空比：20%-30%。 Preferably, the pulse power supply process parameters of the micro-arc oxidation technology are positive pulse voltage: 480V-540V; negative pulse voltage: 80V-150V; pulse frequency: 400-600Hz; duty cycle: 20%-30%.
本发明所用电解液为微弧氧化技术中常规的电解液（以去离子水为溶剂）配比参数为：铝酸钠（NaAlO2）：10-14g/L；磷酸钠（Na3PO4）：6-10g/L；甘油（C3H8O3）：0.05mol/L；碳化硅（SiC）：2g/L。 The electrolyte used in the present invention is a conventional electrolyte (with deionized water as solvent) in the micro-arc oxidation technology. The ratio parameters are: sodium aluminate (NaAlO 2 ): 10-14g/L; sodium phosphate (Na 3 PO 4 ) : 6-10g/L; glycerol (C 3 H 8 O 3 ): 0.05mol/L; silicon carbide (SiC): 2g/L.
本发明的有益效果： Beneficial effects of the present invention:
（1）本发明所述方法制备得到的刀具陶瓷涂层与金属基体之间具有良好的结合力，可以经拉伸实验测试说明，拉伸后刀具表面均匀地残留大量陶瓷膜碎片。 (1) The tool ceramic coating prepared by the method of the present invention has a good bonding force with the metal substrate, which can be proved by tensile experiments that a large number of ceramic film fragments remain uniformly on the surface of the tool after stretching.
（2）本发明所述方法刀具表面的氧化物陶瓷涂层，具有硬度高、涂层厚度大（最大厚度可达30-50um）、涂层整体致密均匀等的特性，极大提高了金属刀具表面的硬度（大于1100HV）、耐磨性、耐蚀性、耐热性，使其具有优异的综合机械切削性能，在保证切削质量和使用寿命的前提下，可大大降低陶瓷涂层刀具的生产制造成本，提高刀具的使用寿命，具有广阔的应用前景和重要的现实意义。 (2) The oxide ceramic coating on the surface of the cutting tool according to the method of the present invention has the characteristics of high hardness, large coating thickness (the maximum thickness can reach 30-50um), and the overall dense and uniform coating, which greatly improves the performance of metal cutting tools. Surface hardness (greater than 1100HV), wear resistance, corrosion resistance, and heat resistance make it have excellent comprehensive mechanical cutting performance. On the premise of ensuring cutting quality and service life, it can greatly reduce the production of ceramic coating tools The manufacturing cost is reduced, and the service life of the tool is improved, which has broad application prospects and important practical significance.
（3）本发明所述方法制备得到的刀具具有良好的耐磨性能：经耐磨试验测试，在1000N的载荷下，陶瓷涂层没有剥落和破裂，证明了陶瓷涂层具有很强的承载能力和优良的耐磨性能。 (3) The cutting tool prepared by the method of the present invention has good wear resistance: the wear resistance test shows that the ceramic coating has no peeling and cracking under a load of 1000N, which proves that the ceramic coating has a strong bearing capacity and excellent wear resistance.
（4）具有良好的耐热冲击性能：经300℃水中淬火35次未见变化，经1300℃热冲击5次未见脱落，且不会因温度的骤降而发生龟裂或脱落。 (4) Good thermal shock resistance: No change after 35 times of quenching in 300°C water, no shedding after 5 times of thermal shock at 1300°C, and no cracking or falling off due to sudden drop in temperature.
附图说明 Description of drawings
图1为本发明的工艺流程图； Fig. 1 is a process flow diagram of the present invention;
图2为本发明所用微弧氧化设备的结构示意图； Fig. 2 is the structural representation of the micro-arc oxidation equipment used in the present invention;
图3为实施例3所述刀具钛合金金属基与陶瓷涂层结合处的显微结构图。 Fig. 3 is a microstructure diagram of the junction of the titanium alloy metal base and the ceramic coating of the cutting tool described in Example 3.
图2中：1-脉冲电源；2-电解槽；3-搅拌系统；4-冷却系统；5-电解液；6-金属刀具毛坯。 In Fig. 2: 1-pulse power supply; 2-electrolyzer; 3-stirring system; 4-cooling system; 5-electrolyte; 6-metal cutting tool blank.
具体实施方式 detailed description
下面结合附图和具有实施例对本发明作进一步详细说明，但本发明的保护范围并不限于所述内容。 The present invention will be described in further detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention is not limited to the content described.
本实施例1~3所用微弧氧化设备，如图2所述，包括脉冲电源1、电解槽2、搅拌系统3；冷却系统4；电解液5；金属刀具毛坯6，电解槽2的外面设有冷却系统4，用于控制电解液的温度在25℃-40℃范围内，包括冷却水入口和冷却水出口。 The micro-arc oxidation equipment used in Examples 1 to 3, as shown in Figure 2, includes a pulse power supply 1, an electrolytic tank 2, a stirring system 3; a cooling system 4; an electrolyte 5; There is a cooling system 4 for controlling the temperature of the electrolyte within the range of 25°C-40°C, including cooling water inlet and cooling water outlet.
实施例1 Example 1
本实施例所述钛合金金属基陶瓷涂层刀具，在钛合金金属刀具表面原位生长一层致密均匀的氧化物陶瓷膜层，具体包括以下步骤： The titanium alloy metal-based ceramic coating tool described in this embodiment grows a layer of dense and uniform oxide ceramic film in situ on the surface of the titanium alloy metal tool, which specifically includes the following steps:
（1）对钛合金金刀具进行分别用#600、#800和#1200水磨砂纸进行打磨、抛光、用丙酮除油、用去离子水清洗、烘干处理后，备用； (1) Grind, polish, degrease with acetone, clean with deionized water, and dry with #600, #800, and #1200 water-grinding paper for the titanium alloy gold tool, and set aside;
（2）以钛合金属金刀具工件作为阳极浸入在电解液中，不锈钢电解槽作为阴极，施加高压脉冲通过微弧氧化技术（脉冲电源工艺参数为正脉冲电压：480V；负脉冲电压：80V；脉冲频率：400Hz；占空比：20%）在钛合金金属刀具表面原位生长一层致密均匀的氧化物陶瓷膜层，微弧氧化过程中对电解液进行匀速搅拌，电解液的温度控制在25℃； (2) The titanium alloy metal tool workpiece is immersed in the electrolyte as the anode, and the stainless steel electrolytic cell is used as the cathode, and the high-voltage pulse is applied through the micro-arc oxidation technology (the pulse power supply process parameters are positive pulse voltage: 480V; negative pulse voltage: 80V; Pulse frequency: 400Hz; duty cycle: 20%) In-situ growth of a dense and uniform oxide ceramic film on the surface of the titanium alloy metal tool, the electrolyte is stirred at a constant speed during the micro-arc oxidation process, and the temperature of the electrolyte is controlled at 25°C;
（3）步骤（2）处理得到的钛合金属金刀具用去离子水清洗后，在100℃温度条件下干燥15min。 (3) After the titanium alloy metal tool obtained in step (2) was cleaned with deionized water, it was dried at 100° C. for 15 minutes.
本实施例所用电解液为微弧氧化技术中常规的电解液（以去离子水为溶剂）配比参数为：铝酸钠（NaAlO2）：10g/L；磷酸钠（Na3PO4）：6g/L；甘油（C3H8O3）：0.05mol/L；碳化硅（SiC）：2g/L。由图3可以看出，微弧氧化处理后表面膜层较厚（约50um），膜层致密均匀，孔隙率较低，膜层与基体金属之间为犬齿交错，膜基界面结合紧密。 The electrolyte used in this example is the conventional electrolyte in the micro-arc oxidation technology (with deionized water as the solvent). The ratio parameters are: sodium aluminate (NaAlO 2 ): 10 g/L; sodium phosphate (Na 3 PO 4 ): 6g/L; glycerol (C 3 H 8 O 3 ): 0.05mol/L; silicon carbide (SiC): 2g/L. It can be seen from Figure 3 that after micro-arc oxidation treatment, the surface film layer is thicker (about 50um), the film layer is dense and uniform, and the porosity is low.
本实施例制备得到的钛合金金属基陶瓷涂层刀具进行拉伸试验，拉伸后涂层陶瓷材料出现拉裂现象（裂纹和碎片），但是未出现大片脱落现象，说明膜基结合力较强。 The titanium alloy metal-based ceramic coating tool prepared in this example was subjected to a tensile test. After stretching, the coating ceramic material appeared cracks (cracks and fragments), but no large pieces fell off, indicating that the film base has a strong bonding force. .
本实施例制备得到的钛合金金属基陶瓷涂层刀，涂层厚度为42.5um，对其进行显微硬度测试，钛合金金属刀具表面的陶瓷涂层的显微硬度值为1152HV。 The titanium alloy metal-based ceramic coating knife prepared in this example has a coating thickness of 42.5um, and a microhardness test is performed on it. The microhardness value of the ceramic coating on the surface of the titanium alloy metal knife is 1152HV.
将本实施例制备得到的钛合金金属基陶瓷涂层刀具与硬度为HRC60的模具钢对磨，结果显示，试样可以把模具钢基体金属表面刮落而试样本身保持完好无损，说明试样的硬度及陶瓷膜层与金属基体的结合强度状况均可以用来切削高硬度的金属材料。 The titanium alloy metal-based ceramic coating tool prepared in this example was ground against the die steel with a hardness of HRC60. The results showed that the sample could scrape off the metal surface of the die steel matrix and the sample itself remained intact, indicating that the sample The hardness and the bonding strength of the ceramic film layer and the metal substrate can be used to cut high-hardness metal materials.
实施例2 Example 2
本实施例所述钛合金金属基陶瓷涂层刀具，在钛合金金属刀具表面原位生长一层致密均匀的氧化物陶瓷膜层，具体包括以下步骤： The titanium alloy metal-based ceramic coating tool described in this embodiment grows a layer of dense and uniform oxide ceramic film in situ on the surface of the titanium alloy metal tool, which specifically includes the following steps:
（1）对钛合金金刀具进行分别用#600、#800和#1200水磨砂纸进行打磨、抛光、用丙酮除油、用去离子水清洗、烘干处理后，备用； (1) Grind, polish, degrease with acetone, clean with deionized water, and dry with #600, #800, and #1200 water-grinding paper for the titanium alloy gold tool, and set aside;
（2）以钛合金属金刀具工件作为阳极浸入在电解液中，不锈钢电解槽作为阴极，施加高压脉冲通过微弧氧化技术（脉冲电源工艺参数为正脉冲电压：500V；负脉冲电压：150V；脉冲频率：500Hz；占空比：30%）在钛合金金属刀具表面原位生长一层致密均匀的氧化物陶瓷膜层，微弧氧化过程中对电解液进行匀速搅拌，电解液的温度控制在30℃； (2) The titanium alloy metal tool workpiece is immersed in the electrolyte as the anode, and the stainless steel electrolytic cell is used as the cathode, and the high-voltage pulse is applied through the micro-arc oxidation technology (the pulse power supply process parameters are positive pulse voltage: 500V; negative pulse voltage: 150V; Pulse frequency: 500Hz; duty cycle: 30%) In-situ growth of a dense and uniform oxide ceramic film on the surface of the titanium alloy metal tool, the electrolyte is stirred at a constant speed during the micro-arc oxidation process, and the temperature of the electrolyte is controlled at 30°C;
（3）步骤（2）处理得到的钛合金属金刀具用去离子水清洗后，在120℃温度条件下干燥20min。 (3) After the titanium alloy metal tool obtained in step (2) was cleaned with deionized water, it was dried at 120° C. for 20 minutes.
本实施例所用电解液为微弧氧化技术中常规的点解液（以去离子水为溶剂）配比参数为：铝酸钠（NaAlO2）：12g/L；磷酸钠（Na3PO4）：8g/L；甘油（C3H8O3）：0.05mol/L；碳化硅（SiC）：2g/L。 The electrolyte used in this example is the conventional spot solution in the micro-arc oxidation technology (with deionized water as the solvent). The ratio parameters are: sodium aluminate (NaAlO 2 ): 12g/L; sodium phosphate (Na 3 PO 4 ) : 8g/L; glycerol (C 3 H 8 O 3 ): 0.05mol/L; silicon carbide (SiC): 2g/L.
本实施例对制备得到的钛合金金属基陶瓷涂层刀具进行拉伸试验，拉伸后涂层陶瓷材料出现拉裂现象（裂纹和碎片），但是未出现大片脱落现象，说明膜基结合力较强。 In this example, a tensile test was carried out on the prepared titanium alloy metal-based ceramic coating tool. After stretching, the coated ceramic material appeared cracking (cracks and fragments), but no large pieces fell off, indicating that the film base had a relatively strong bonding force. powerful.
本实施例制备得到的钛合金金属基陶瓷涂层刀，涂层厚度为45.8um，对其进行显微硬度测试，钛合金金属刀具表面的陶瓷涂层的显微硬度值为1106HV。 The titanium alloy metal-based ceramic coating knife prepared in this example has a coating thickness of 45.8um, and a microhardness test is performed on it. The microhardness value of the ceramic coating on the surface of the titanium alloy metal knife is 1106HV.
将本实施例制备得到的钛合金金属基陶瓷涂层刀具与硬度为HRC60的模具钢对磨，结果显示，试样可以把模具钢基体金属表面刮落而试样本身保持完好无损，说明试样的硬度及陶瓷膜层与金属基体的结合强度状况均可以用来切削高硬度的金属材料。 The titanium alloy metal-based ceramic coating tool prepared in this example was ground against the die steel with a hardness of HRC60. The results showed that the sample could scrape off the metal surface of the die steel matrix and the sample itself remained intact, indicating that the sample The hardness and the bonding strength of the ceramic film layer and the metal substrate can be used to cut high-hardness metal materials.
实施例3 Example 3
本实施例所述钛合金金属基陶瓷涂层刀具，在钛合金金属刀具表面原位生长一层致密均匀的氧化物陶瓷膜层，具体包括以下步骤： The titanium alloy metal-based ceramic coating tool described in this embodiment grows a layer of dense and uniform oxide ceramic film in situ on the surface of the titanium alloy metal tool, which specifically includes the following steps:
（1）对钛合金金刀具进行分别用#600、#800和#1200水磨砂纸进行打磨、抛光、用丙酮除油、用去离子水清洗、烘干处理后，备用； (1) Grind, polish, degrease with acetone, clean with deionized water, and dry with #600, #800, and #1200 water-grinding paper for the titanium alloy gold tool, and set aside;
（2）以钛合金属金刀具工件作为阳极浸入在电解液中，不锈钢电解槽作为阴极，施加高压脉冲通过微弧氧化技术（脉冲电源工艺参数为正脉冲电压：540V；负脉冲电压：100V；脉冲频率：600Hz；占空比：25%）在钛合金金属刀具表面原位生长一层致密均匀的氧化物陶瓷膜层，微弧氧化过程中对电解液进行匀速搅拌，电解液的温度控制在40℃； (2) The titanium alloy metal tool workpiece is immersed in the electrolyte as the anode, and the stainless steel electrolytic cell is used as the cathode, and the high-voltage pulse is applied through the micro-arc oxidation technology (the pulse power supply process parameters are positive pulse voltage: 540V; negative pulse voltage: 100V; Pulse frequency: 600Hz; duty cycle: 25%) In-situ growth of a dense and uniform oxide ceramic film on the surface of the titanium alloy metal tool, the electrolyte is stirred at a constant speed during the micro-arc oxidation process, and the temperature of the electrolyte is controlled at 40°C;
（3）步骤（2）处理得到的钛合金属金刀具用去离子水清洗后，在150℃温度条件下干燥30min。 (3) After the titanium alloy metal tool obtained in step (2) was cleaned with deionized water, it was dried at 150° C. for 30 minutes.
本实施例所用电解液为微弧氧化技术中常规的点解液（以去离子水为溶剂）配比参数为：铝酸钠（NaAlO2）：14g/L；磷酸钠（Na3PO4）：10g/L；甘油（C3H8O3）：0.05mol/L；碳化硅（SiC）：2g/L。 The electrolyte used in this example is the conventional spot solution in the micro-arc oxidation technology (with deionized water as the solvent). The ratio parameters are: sodium aluminate (NaAlO 2 ): 14g/L; sodium phosphate (Na 3 PO 4 ) : 10g/L; glycerol (C 3 H 8 O 3 ): 0.05mol/L; silicon carbide (SiC): 2g/L.
本实施例对制备得到的钛合金金属基陶瓷涂层刀具进行拉伸试验，拉伸后涂层陶瓷材料出现拉裂现象（裂纹和碎片），但是未出现大片脱落现象，说明膜基结合力较强。 In this example, a tensile test was carried out on the prepared titanium alloy metal-based ceramic coating tool. After stretching, the coated ceramic material appeared cracking (cracks and fragments), but no large pieces fell off, indicating that the film base had a relatively strong bonding force. powerful.
本实施例制备得到的钛合金金属基陶瓷涂层刀，涂层厚度为48.7um，对其进行显微硬度测试，钛合金金属刀具表面的陶瓷涂层的显微硬度值为1103HV。 The titanium alloy metal-based ceramic coating knife prepared in this example has a coating thickness of 48.7um, and a microhardness test was performed on it, and the microhardness value of the ceramic coating on the surface of the titanium alloy metal knife was 1103HV.
将本实施例制备得到的钛合金金属基陶瓷涂层刀具与硬度为HRC60的模具钢对磨，结果显示，试样可以把模具钢基体金属表面刮落而试样本身保持完好无损，说明试样的硬度及陶瓷膜层与金属基体的结合强度状况均可以用来切削高硬度的金属材料。 The titanium alloy metal-based ceramic coating tool prepared in this example was ground against the die steel with a hardness of HRC60. The results showed that the sample could scrape off the metal surface of the die steel matrix and the sample itself remained intact, indicating that the sample The hardness and the bonding strength of the ceramic film layer and the metal substrate can be used to cut high-hardness metal materials.
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