CN101108291A - A kind of preparation method of FeAl intermetallic compound filter material - Google Patents
A kind of preparation method of FeAl intermetallic compound filter material Download PDFInfo
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- CN101108291A CN101108291A CNA2007100354063A CN200710035406A CN101108291A CN 101108291 A CN101108291 A CN 101108291A CN A2007100354063 A CNA2007100354063 A CN A2007100354063A CN 200710035406 A CN200710035406 A CN 200710035406A CN 101108291 A CN101108291 A CN 101108291A
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- powder
- filter material
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- intermetallic compound
- sintering
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- 239000000463 material Substances 0.000 title claims abstract description 33
- 229910015372 FeAl Inorganic materials 0.000 title claims abstract description 18
- 229910000765 intermetallic Inorganic materials 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 27
- 238000005245 sintering Methods 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000001257 hydrogen Substances 0.000 claims abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract 4
- 230000015572 biosynthetic process Effects 0.000 claims abstract 4
- 238000003786 synthesis reaction Methods 0.000 claims abstract 4
- 229910021529 ammonia Inorganic materials 0.000 claims abstract 2
- 238000009694 cold isostatic pressing Methods 0.000 claims abstract 2
- 238000001272 pressureless sintering Methods 0.000 claims abstract 2
- 238000002156 mixing Methods 0.000 claims description 8
- 238000000748 compression moulding Methods 0.000 claims 1
- 239000011148 porous material Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 14
- 238000001914 filtration Methods 0.000 description 10
- 239000011812 mixed powder Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000005056 compaction Methods 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000001458 anti-acid effect Effects 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
本发明公开了一种FeAl金属间化合物过滤材料的制备方法。A.选取粒径为100～1μm的Fe粉和粒径为100～1μm的Al粉，其成分配比为75～25at.％Fe和25～75at.％Al；B.采用模压成形制备片状成形坯，压制压力控制在100～300MPa，或采用冷等静压制备管状成形坯，等静压力控制在50～200MPa；C.反应合成采用无压烧结工艺，首先在120～150℃温度下保温30～60分钟，随后以1～10℃/min的速率升至1000～1200℃，保温30～60分钟；烧结气氛为氢气或分解氨，或者采用真空烧结，真空度为1×10－1～1×10－3Pa；冷却阶段，控制降温速度为10～50℃/min。采用这种元素粉末反应合成工艺来制备过滤材料，有利于控制过滤材料的孔结构性能，制备过程不需要添加造孔剂，降低了能耗，几乎无污染。The invention discloses a preparation method of a FeAl intermetallic compound filter material. A. Select Fe powder with a particle size of 100-1 μm and Al powder with a particle size of 100-1 μm, the composition ratio of which is 75-25 at.% Fe and 25-75 at.% Al; B. Prepare flakes by molding Formed blanks, the pressing pressure is controlled at 100-300MPa, or cold isostatic pressing is used to prepare tubular shaped blanks, and the isostatic pressure is controlled at 50-200MPa; C. The reaction synthesis adopts a pressureless sintering process, and firstly, it is kept at a temperature of 120-150°C 30-60 minutes, then increase to 1000-1200°C at a rate of 1-10°C/min, and keep warm for 30-60 minutes; the sintering atmosphere is hydrogen or decomposed ammonia, or vacuum sintering, the vacuum degree is 1×10 -1 ～ 1×10 -3 Pa; in the cooling stage, the cooling rate is controlled to be 10-50°C/min. The use of this element powder reaction synthesis process to prepare the filter material is beneficial to control the pore structure performance of the filter material. The preparation process does not need to add a pore-forming agent, which reduces energy consumption and is almost pollution-free.
Description
Technical field
The present invention relates to the technology of preparing of filtering material, be specifically related to adopt a kind of preparation method of Fe, the synthetic FeAl intermetallic compound filter material of Al element powders reaction.
Background technology
Filtering material is separated dispersed microparticles by means of its porous structure that has from the fluid of disperse, thereby reaches purposes such as Separation of Solid and Liquid, solid and gas separation, purification and purification, is widely used in fields such as chemical industry, metallurgy, medicine and environmental protection.Filtering material can be divided into inorganic material and organic material two classes by the preparation material, and wherein inorganic material more and more comes into one's own owing to have high heat endurance, chemical stability and mechanical stability.Present used inorganic material mainly contains ceramic body, as aluminium oxide and glass, and metals such as copper, nickel and stainless steel, the technology of preparing that is adopted mainly is the solid particles sintering process.This preparation technology need add pore creating material usually in powder stock, brought certain environmental pollution in sintering process subsequently.Ceramic filter material need carry out sintering usually under high temperature more than 1600 ℃ simultaneously, and energy consumption is big, has improved production cost.The antiacid caustic corrosion performance and the high temperature oxidation resistance of common metal material are relatively poor.
Summary of the invention
Technical problem to be solved by this invention is to introduce the FeAl intermetallic compound in inorganic filter material, the new technology of a kind of Fe of employing, the synthetic preparation of Al element powders reaction FeAl intermetallic compound filter material is provided, with high temperature oxidation resistance and the corrosion resistance that increases substantially inorganic filter material, enlarge the use field of filtering material, cut down the consumption of energy simultaneously, reduce and pollute.
In order to solve the problems of the technologies described above, employing Fe provided by the invention, the synthetic method for preparing FeAl intermetallic compound filter membrane material of Al element powders reaction, its concrete process route is: element powders composition, grain size proportion → batch mixing → shaping → reaction are synthesized, it is characterized in that: A, to choose Fe powder and the particle diameter that particle diameter is 100～1 μ m be the Al powder of 100～1 μ m, and its composition proportion is 75～25at.%Fe and 25～75at.%Al (at. is an atomic percent); B, employing die forming prepare sheet-like formed base, and pressing pressure is controlled at 100～300MPa, or adopt isostatic cool pressing to prepare tubulose shaping base, and isostatic pressure is controlled at 50～200MPa; C, the synthetic non-pressure sintering technology that adopts of reaction at first are incubated 30～60 minutes under 120～150 ℃ of temperature, the speed with 1～10 ℃/min rises to 1000～1200 ℃ subsequently, is incubated 30～60 minutes; Sintering atmosphere is hydrogen or cracked ammonium, perhaps adopts vacuum-sintering, and vacuum is 1 * 10
-1～1 * 10
-3Pa; Cooling stage, the control cooling rate is 10～50 ℃/min.
Compared with prior art, the present invention has the following advantages:
1. because the FeAl intermetallic compound has good antiacid caustic corrosion performance, anti-curability and high temperature oxidation resistance, adopt the FeAl intermetallic compound to prepare inorganic filter material, improve the antioxygenic property of filtering material, anti-curability and corrosion resistance significantly, enlarged the use field of filtering material.
2.Fe, in the synthetic preparation of the Al element powders reaction FeAl intermetallic compound filter material process, do not need to add pore creating material and can obtain 30 ~ 50% porosity, avoided removing the pore creating material link in the traditional handicraft, reduced energy consumption, almost pollution-free.
In sum, the present invention is the new technology of a kind of Fe of employing, the synthetic preparation of Al element powders reaction FeAl intermetallic compound filter material, with high temperature oxidation resistance and the corrosion resistance that increases substantially inorganic filter material, enlarge the use field of filtering material, cut down the consumption of energy simultaneously, reduce and pollute.
The specific embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1:
Adopting particle mean size is that Fe powder and the granularity of 5 μ m is the mixed-powder of the following Al powder of 50 μ m, carries out batch mixing by the composition proportion of Fe-40at.%Al, die forming under the pressure of 220MPa subsequently, and making diameter is 32mm, the sheet of thick 1～2mm is filtered base.The synthetic non-pressure sintering technology that adopts of reaction at first is incubated 30 minutes under 120 ℃ of temperature, the speed with 5 ℃/min rises to 1000 ℃ subsequently, is incubated 60 minutes; Sintering atmosphere is a hydrogen; Cooling stage, the control cooling rate is 50 ℃/min.Zhi Bei FeAl intermetallic compound sheet filtering material thus, porosity is 31%, the maximum diameter of hole is 1.7 μ m.
Embodiment 2:
The employing particle mean size is that Fe powder and the granularity of 3 μ m is the mixed-powder of the following Al powder of 20 μ m, composition proportion by Fe-30at.%Al is carried out batch mixing, adopt cold isostatic compaction tubulose base subsequently, isostatic pressure is 150MPa, making external diameter is 30mm, internal diameter is 28～29mm, and height is the tubulose shaping base of 200mm.The synthetic non-pressure sintering technology that adopts of reaction at first is incubated 60 minutes under 140 ℃ of temperature, the speed with 8 ℃/min rises to 1200 ℃ subsequently, is incubated 30 minutes; Sintering atmosphere is a vacuum, and vacuum is 1 * 10
-1～1 * 10
-3Pa; Cooling stage, the control cooling rate is 20 ℃/min.Zhi Bei FeAl intermetallic compound tubular filter material thus, porosity is 35%, the maximum diameter of hole is 1.1 μ m.
Embodiment 3:
Adopting particle mean size is that Fe powder and the granularity of 1 μ m is the mixed-powder of the following Al powder of 50 μ m, carries out batch mixing by the composition proportion of Fe-25at.%Al, die forming under the pressure of 100MPa subsequently, and making diameter is 32mm, the sheet of thick 1～2mm is filtered base.The synthetic non-pressure sintering technology that adopts of reaction at first is incubated 30 minutes under 120 ℃ of temperature, the speed with 1 ℃/min rises to 1000 ℃ subsequently, is incubated 60 minutes; Sintering atmosphere is a hydrogen; Cooling stage, the control cooling rate is 50 ℃/min.Zhi Bei FeAl intermetallic compound sheet filtering material thus, porosity is 31%, the maximum diameter of hole is 0.9 μ m.
Embodiment 4:
The employing particle mean size is that Fe powder and the granularity of 3 μ m is the mixed-powder of the following Al powder of 20 μ m, composition proportion by Fe-30at.%Al is carried out batch mixing, adopt cold isostatic compaction tubulose base subsequently, isostatic pressure is 50MPa, making external diameter is 30mm, internal diameter is 28～29mm, and height is the tubulose shaping base of 200mm.The synthetic non-pressure sintering technology that adopts of reaction at first is incubated 60 minutes under 150 ℃ of temperature, the speed with 10 ℃/min rises to 1200 ℃ subsequently, is incubated 30 minutes; Sintering atmosphere is a vacuum, and vacuum is 1 * 10
-1～1 * 10
-3Pa; Cooling stage, the control cooling rate is 10 ℃/min.Zhi Bei FeAl intermetallic compound tubular filter material thus, porosity is 36%, the maximum diameter of hole is 1.4 μ m.
Embodiment 5:
Adopting particle mean size is that Fe powder and the granularity of 5 μ m is the mixed-powder of the following Al powder of 100 μ m, carries out batch mixing by the composition proportion of Fe-75at.%Al, die forming under the pressure of 300MPa subsequently, and making diameter is 32mm, the sheet of thick 1～2mm is filtered base.The synthetic non-pressure sintering technology that adopts of reaction at first is incubated 30 minutes under 120 ℃ of temperature, the speed with 5 ℃/min rises to 1000 ℃ subsequently, is incubated 60 minutes; Sintering atmosphere is a hydrogen; Cooling stage, the control cooling rate is 50 ℃/min.Zhi Bei FeAl intermetallic compound sheet filtering material thus, porosity is 30%, the maximum diameter of hole is 1.6 μ m.
Embodiment 6:
The employing particle mean size is that Fe powder and the granularity of 100 μ m is the mixed-powder of the following Al powder of 20 μ m, composition proportion by Fe-30at.%Al is carried out batch mixing, adopt cold isostatic compaction tubulose base subsequently, isostatic pressure is 200MPa, making external diameter is 30mm, internal diameter is 28～29mm, and height is the tubulose shaping base of 200mm.The synthetic non-pressure sintering technology that adopts of reaction at first is incubated 60 minutes under 140 ℃ of temperature, the speed with 8 ℃/min rises to 1200 ℃ subsequently, is incubated 30 minutes; Sintering atmosphere is a vacuum, and vacuum is 1 * 10
-1～1 * 10
-3Pa; Cooling stage, the control cooling rate is 20 ℃/min.Zhi Bei FeAl intermetallic compound tubular filter material thus, porosity is 37%, the maximum diameter of hole is 1.9 μ m.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100354063A CN101108291A (en) | 2007-07-20 | 2007-07-20 | A kind of preparation method of FeAl intermetallic compound filter material |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100354063A CN101108291A (en) | 2007-07-20 | 2007-07-20 | A kind of preparation method of FeAl intermetallic compound filter material |
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| CN101108291A true CN101108291A (en) | 2008-01-23 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580404A (en) * | 2012-02-06 | 2012-07-18 | 江苏云才材料有限公司 | Method for preparing asymmetric stainless steel filter disc |
| CN103361505A (en) * | 2012-12-27 | 2013-10-23 | 华东理工大学 | Preparation method of FeAl-based porous material |
| TWI551451B (en) * | 2014-11-05 | 2016-10-01 | The method of making high permeability materials | |
| CN106191492A (en) * | 2016-07-12 | 2016-12-07 | 东南大学 | A kind of preparation method of high-purity FeGa3 intermetallic compound |
| CN109454231A (en) * | 2018-12-18 | 2019-03-12 | 湖北汽车工业学院 | A kind of preparation method of iron aluminium copper micropore filter material |
| CN111230118A (en) * | 2020-01-14 | 2020-06-05 | 中南大学 | A kind of FeAlSi intermetallic compound porous material and its preparation method and application |
| CN113584402A (en) * | 2021-08-03 | 2021-11-02 | 西部宝德科技股份有限公司 | Preparation method of iron-aluminum-chromium filtering material |
-
2007
- 2007-07-20 CN CNA2007100354063A patent/CN101108291A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580404A (en) * | 2012-02-06 | 2012-07-18 | 江苏云才材料有限公司 | Method for preparing asymmetric stainless steel filter disc |
| CN102580404B (en) * | 2012-02-06 | 2014-05-28 | 江苏云才材料有限公司 | Method for preparing asymmetric stainless steel filter disc |
| CN103361505A (en) * | 2012-12-27 | 2013-10-23 | 华东理工大学 | Preparation method of FeAl-based porous material |
| TWI551451B (en) * | 2014-11-05 | 2016-10-01 | The method of making high permeability materials | |
| CN106191492A (en) * | 2016-07-12 | 2016-12-07 | 东南大学 | A kind of preparation method of high-purity FeGa3 intermetallic compound |
| CN109454231A (en) * | 2018-12-18 | 2019-03-12 | 湖北汽车工业学院 | A kind of preparation method of iron aluminium copper micropore filter material |
| CN109454231B (en) * | 2018-12-18 | 2021-02-05 | 湖北汽车工业学院 | A kind of preparation method of iron-aluminum-copper alloy microporous filter material |
| CN111230118A (en) * | 2020-01-14 | 2020-06-05 | 中南大学 | A kind of FeAlSi intermetallic compound porous material and its preparation method and application |
| CN113584402A (en) * | 2021-08-03 | 2021-11-02 | 西部宝德科技股份有限公司 | Preparation method of iron-aluminum-chromium filtering material |
| CN113584402B (en) * | 2021-08-03 | 2022-11-08 | 西部宝德科技股份有限公司 | A kind of preparation method of iron-aluminum-chromium filter material |
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Open date: 20080123 |