CN101108291A - Method of manufacturing FeAl intermetallic compound filter material - Google Patents
Method of manufacturing 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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Abstract
The invention discloses the preparation method of a FeAl IMC filtering material.A. Select the Fe powder and Al powder with grain diameter of 100 to 1Mu m, the component match is 75 to 25at per cent Fe and 25 to 75at per cent Al; B. Adopt press forming to prepare platy forming adobe, the press forming pressure is controlled between 100 to 300 Mpa, or adopt isostatic cool pressing to prepare tubular forming adobe, the isostatic pressure is controlled between 50 to 200Mpa; C. the reaction forming adopts non pressure sintering technics, firstly keep heat for 30 to 60 minutes under the temperature of 120 to 150 DEG C., then rises to 1000 to 1200 DEG C. at the rate of 1 to 10 DEG C. and keep heat for 30 to 60 minutes; the sintering atmosphere is hydrogen and cracked ammonium, or adopts vacuum sintering, the vacuum degree is 1 multiply 10 minus 1 to 1 multiply 10 to 3Pa; the cooling stage, the control cooling rate is 10 to 50 DEG C./min. With adopting the element powder reaction forming technics to prepare filtering material, which is beneficial for controlling the pore structure performance of the filtering material, the prepare process doesn't need adding pore former and lowers energy consumption almost without pollution.
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)
1. the preparation method of a FeAl intermetallic compound filter material, 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; 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100354063A CN101108291A (en) | 2007-07-20 | 2007-07-20 | Method of manufacturing FeAl intermetallic compound filter material |
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|---|---|---|---|
| CNA2007100354063A CN101108291A (en) | 2007-07-20 | 2007-07-20 | Method of manufacturing 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 high-purity FeGa3the preparation method of 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 | FeAlSi intermetallic compound porous material and preparation method and application thereof |
| 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 high-purity FeGa3the preparation method of 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 | Preparation method of iron-aluminum-copper alloy microporous filter material |
| CN111230118A (en) * | 2020-01-14 | 2020-06-05 | 中南大学 | FeAlSi intermetallic compound porous material and preparation method and application thereof |
| 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 | Preparation method of iron-aluminum-chromium filtering material |
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