CN103397244B - The preparation method of the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation - Google Patents
The preparation method of the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of sintering Fe-Al base alloy porous material of resistance to high temperature oxidation.Step comprises: 1) prepare mixed powder: be 200 ~ 300 object Fe powder by particle diameter, particle diameter to be 200 ~ 300 object Al powder and particle diameter be-400 object Cr powder mix by the proportioning of to be 60 ~ 85%, Cr of Fe, Al gross weight be 10 ~ 30% of Fe, Al, Cr gross weight of Fe in the sintering Fe-Al base alloy porous material prepared; 2) granulation, drying and shaping; 3) sinter: above-mentioned pressed compact is placed in sintering oven and sinters, sintering schedule comprises: the first stage: sintering temperature rises to 420 ~ 500 DEG C from room temperature, and temperature rise rate controls at 1 ~ 10 DEG C/min, and be incubated 60 ~ 300 minutes at 420 ~ 500 DEG C; Subordinate phase: sintering temperature is risen to 550 ~ 650 DEG C, temperature rise rate controls at 1 ~ 10 DEG C/min, and is incubated 180 ~ 360 minutes at 550 ~ 650 DEG C; And phase III and fourth stage are burnt, namely last furnace cooling obtains the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation.
Description
Technical field
The present invention relates to a kind of porous material and apply the filtering element of this porous material, be specifically related to a kind of sintering Fe-Al base alloy porous material prepared by powder metallurgic method and the filtering element applying this porous material.Relate to the preparation method of the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation in addition.
Background technology
At present the research of sintered porous material is mainly concentrated on to the several aspect of expansion of the optimization of preparation technology, the discussion of pore formation mechanism, the improvement of material property and range of application.Wherein, with regard to pore formation mechanism, the pore-forming mode be applied in sintered porous material preparation method mainly contains: first, by chemical reaction pore-forming, its principle is based on the inclined diffusional effect caused by the larger difference of different element intrinsic diffusion coefficient, makes to produce Kirkendall hole in material; The second, pile up pore-forming by raw particles physics; 3rd, deviate from pore-forming by added ingredients.Above-mentioned several pore-forming way choice and combination inevitably cause direct impact to the pore structure of porous material.And the pore structure of porous material further can determine the performance of porous material.Therefore, the sintered porous material generated based on different pore-forming mode often has pore structure and the use properties of differentiation, by their understanding and measurement, these porous materials can be made clearerly to be identified and to characterize.At present, in order to sufficient characterizing porous materials, this area adopts usually: 1) material composition and content; 2) pore structure, mainly comprises porosity, aperture etc.; 3) material property parameter, comprises penetrating quality, mechanical strength and chemical stability, and wherein, penetrating quality is commonly used fluid permeability method and measured, and mechanical strength represents by tensile strength usually, and chemical stability is mainly with acidproof and/or alkalinely to represent.
Fe-Al intermetallic compound porous material is a kind of sintering inorganic porous material between superalloy and pottery.Because it combines jointly according to metallic bond and covalent linkage, have the Common advantages of metallic substance and stupalith concurrently, therefore, Fe-Al intermetallic compound porous material has broad application prospects as filtering material (especially high temperature air filtration material).Although Fe-Al intermetallic compound porous material is generally acknowledged have excellent performance, for the application scenario that some are special, its high-temperature oxidation resistance and anti-alkali corrosion performance still have much room for improvement.Before the applying date of the application, also do not find and a kind ofly can either improve the high-temperature oxidation resistance of Fe-Al intermetallic compound porous material and anti-alkali corrosion performance, can incidentally improve material hole structure again simultaneously, and reach the sintering Fe-Al base alloy porous material of excellent combination use properties.
Summary of the invention
Namely technical problems to be solved in this application are to provide a kind of sintering Fe-Al base alloy porous material of resistance to high temperature oxidation and apply its filtering element.A kind of preparation method of sintering Fe-Al base alloy porous material of resistance to high temperature oxidation will be provided in addition.
The sintering Fe-Al base alloy porous material of the resistance to high temperature oxidation of the application, its porosity is 30 ~ 60%, and mean pore size is 0.5 ~ 50 μm, and has following feature:
A) it is elementary composition primarily of Fe, Al, Cr tri-kinds, and the weight sum of these three kinds of elements accounts for more than 90% of this sintering FeAl base alloy porous material weight, and wherein, Fe is 60 ~ 85%, Cr of Fe, Al gross weight is 10 ~ 30% of Fe, Al, Cr gross weight;
B) Cr in this sintering Fe-Al base alloy porous material mainly exists with the form of the chromium compounds of Fe-Al based compound, or mainly exist with the form of the chromium compounds of Fe-Al based compound and FeCr, and be uniformly distributed haply in this sintering Fe-Al base alloy porous material;
C) its tensile strength>=45MPa, the sintering Fe-Al base alloy porous material air flux>=80m of thickness≤5mm
3/ m
2kpah, be that in the NaOH solution of 10%, the rate of weight loss of soaking at room temperature after 15 days is below 0.5% at massfraction, and under the air atmosphere of 1000 DEG C, be incubated material rate of body weight gain after 90 hours be less than 0.25%.
Above-mentioned sintering Fe-Al base alloy porous material can be only elementary composition by Fe, Al, Cr tri-kinds, also other materials except Fe, Al, Cr can be added in the scope being no more than sintering Fe-Al base alloy porous material gross weight 10%, such as, in Mo, V, Nb, Si, W, Y, Ta, Zr, Co one or more elements.The weight sum of Fe, Al, Cr tri-kinds of elements in this porous material controls in more than 95%, 97%, 98% or 99% of porous material weight by current suggestion, thus the performance sintering Fe-Al base alloy porous material can either be ensured, also can simplify raw material type simultaneously, be convenient to produce.
When sintering Fe-Al base alloy porous material and being elementary composition by Fe, Al, Cr tri-kinds, according to the change of Cr content, the composition of the crystallization phases in this sintering Fe-Al base alloy porous material can comprise following several situation:
1) crystallization phases of this sintering Fe-Al base alloy porous material is made up of compound between Fe-Al binary metal and Fe-Al-Cr ternary compound, and described Fe-Al-Cr ternary compound is specially Fe
2alCr;
2) crystallization phases of this sintering Fe-Al base alloy porous material is made up of Fe-Al-Cr ternary compound, and described Fe-Al-Cr ternary compound is specially Fe
2alCr.
3) crystallization phases of this sintering Fe-Al base alloy porous material is made up of Fe-Cr binary compound and Fe-Al-Cr ternary compound, and described Fe-Al-Cr ternary compound is specially Fe
2alCr, Fe-Cr binary compound is specially FeCr.
The filtering element of the application, this filtering element contains the sintering Fe-Al base alloy porous material of above-mentioned resistance to high temperature oxidation.In view of material behavior, described filtering element is preferably a kind of filtering element for gas filtration, is especially a kind of filtering element of the high temperature air filtration for 300 ~ 800 DEG C.
The preparation method of the sintering Fe-Al base alloy porous material of the above-mentioned resistance to high temperature oxidation of the application, its step comprises:
1) mixed powder is prepared: be 200 ~ 300 object Fe powder by particle diameter, particle diameter to be 200 ~ 300 object Al powder and particle diameter be-400 object Cr powder mix by the proportioning of to be 60 ~ 85%, Cr of Fe, Al gross weight be 10 ~ 30% of Fe, Al, Cr gross weight of Fe in the sintering Fe-Al base alloy porous material prepared;
2) granulation, drying and shaping: the mixed powder containing above-mentioned Fe powder, Al powder, Cr powder is carried out granulation, drying successively, drying temperature is set as 40 ~ 60 DEG C, be set as 4 ~ 8 hours time of drying, then pressure forming is carried out, under 120 ~ 280MPa forming pressure, pressurize 20 ~ 80 seconds, obtains pressed compact after pressure forming;
3) sinter: pressed compact is placed in sintering oven and sinters, sintering schedule comprises following four-stage: the first stage: sintering temperature rises to 420 ~ 500 DEG C from room temperature, temperature rise rate controls at 1 ~ 10 DEG C/min, and is incubated 60 ~ 300 minutes at 420 ~ 500 DEG C; Subordinate phase: sintering temperature is risen to 550 ~ 650 DEG C, temperature rise rate controls at 1 ~ 10 DEG C/min, and is incubated 180 ~ 360 minutes at 550 ~ 650 DEG C; Phase III: sintering temperature is risen to 1000 ~ 1100 DEG C, temperature rise rate controls at 1 ~ 15 DEG C/min, and is incubated 120 ~ 240 minutes at 1000 ~ 1100 DEG C; Fourth stage: sintering temperature is risen to 1200 DEG C ~ 1350 DEG C, temperature rise rate controls at 1 ~ 5 DEG C/min, and 120 ~ 360 minutes are incubated at 1200 DEG C ~ 1350 DEG C; After sintering, namely furnace cooling obtains the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation.
The sintering Fe-Al base alloy porous material of the application's resistance to high temperature oxidation has technique effect useful as follows:
One, there is higher tensile strength, excellent high-temperature oxidation resistance and anti-alkali corrosion performance;
Two, surprisingly, due in raw material Cr and Fe reaction and improve pore structure, reduce filtration medium through resistance, desirable filtration flux (ventilation property) can be obtained.
Accompanying drawing explanation
Fig. 1 is the SEM(sweep electron microscope of sample 1 in the application's embodiment) photo.
Fig. 2 is the XRD(X ray diffraction of sample 1 in the application's embodiment) figure.
Embodiment
Below by experiment, the preparation method of sintering Fe-Al base alloy porous material and the sintering Fe-Al base alloy porous material that obtained by these methods are specifically described.Illustrated by these, those skilled in the art can know the outstanding feature recognizing that the sintering Fe-Al base alloy porous material of the application has.The numbering of the experimental example below related to is consistent with the numbering of corresponding " pressed compact ", " sample ".
For sintering Fe-Al base alloy porous material and the preparation thereof of the application are described, following 7 groups of experimental examples are prepared altogether.Wherein, the sample 1 to 4 that example 1 to 4 prepares respectively by experiment all belongs within the scope of the application's claim 1 claimed sintering Fe-Al base alloy porous material.Experimental example 5 to 7, as the contrast experiment embodying experimental example 1 to 4 substantive distinguishing features and technique effect, its numbering all uses " * " to mark, to distinguish.Experimental example 5 specifically decreases the content of Cr powder in raw material on the basis of experimental example 1, and is compared with sample 1 by the sample 5 prepared thus.Experimental example 6 specifically adds the content of Cr powder in raw material on the basis of experimental example 4, and is compared with sample 3 by the sample 6 prepared thus.Experimental example 7 relates to the preparation method of existing Fe-Al intermetallic compound porous material, and is compared with sample 1 to 4 by the sample 7 prepared thus.
One, material preparation process
The material composition of experimental example 1 to 7 and content (by weight percentage) are in table 1.Wherein have employed particle diameter is 200 ~ 300 object Fe powder, and particle diameter is 200 ~ 300 object Al powder, particle diameter to be-400 object Cr powder and particle diameter the be Si powder of 3 ~ 5 μm.
As can be seen from the material composition listed by table 1 and content thereof: the raw material of experimental example 1 is made up of Fe powder, Al powder and Cr powder, wherein Fe powder accounts for Fe powder, 75%, Cr powder of Al powder gross weight accounts for 10% of raw material gross weight; The raw material of experimental example 2 is made up of Fe powder, Al powder and Cr powder, and wherein Fe powder accounts for Fe powder, 77.5%, Cr powder of Al powder gross weight accounts for 26.5% of raw material gross weight; The raw material of experimental example 3 is made up of Fe powder, Al powder and Cr powder, and wherein Fe powder accounts for Fe powder, 75%, Cr powder of Al powder gross weight accounts for 30% of raw material gross weight; The raw material of experimental example 4 is made up of Fe powder, Al powder, Cr powder and Si powder, and 9.4%, the Si powder that wherein Fe powder accounts for Fe powder, 75%, Cr powder of Al powder gross weight accounts for raw material gross weight accounts for 6% of raw material gross weight; The raw material of experimental example 5 is made up of Fe powder, Al powder and Cr powder, and wherein Fe powder accounts for Fe powder, 75%, Cr powder of Al powder gross weight accounts for 5% of raw material gross weight; The raw material of experimental example 6 is made up of Fe powder, Al powder and Cr powder, and wherein Fe powder accounts for Fe powder, 75%, Cr powder of Al powder gross weight accounts for 35% of raw material gross weight; The raw material of experimental example 7 is made up of Fe powder, Al powder, wherein Fe powder account for Fe powder, Al powder gross weight 75%.
Table 1: the composition that experimental example 1 to 7 is raw materials used and content
By listed by table 1, respectively the raw material of experimental example 1 to 7 is mixed.After abundant mixing, consider in the raw material of experimental example 1 to 6 and be all mixed with the less Cr powder of particle diameter, easily cause segregation, therefore, also need to carry out granulation (for ease of contrast, carrying out granulation equally to the powder of experimental example 7) to the powder of experimental example 1 to 6, after granulation, carry out drying again, drying temperature is set as 55 DEG C, is set as 6 hours time of drying.Afterwards, loaded by the powder of experimental example 1 to 7 respectively in the isostatic pressing mold of unified specification, then these moulds are placed in cold isostatic compaction machine respectively, pressurize 60 seconds under 200MPa forming pressure, namely makes the tubulose pressed compact being numbered 1 to 7 after the demoulding.Then, these pressed compacts are respectively charged into sintering boat, then these sintering boats are placed in sintering oven sinter, furnace cooling after sintering, finally obtains sample 1 to 7 again from each sintering boat.
The sintering schedule of 1.1 experimental examples 1 to 6
The sintering schedule of experimental example 1 to 6 comprises following four-stage.First stage: sintering temperature rises to 420 ~ 500 DEG C from room temperature, temperature rise rate controls at 1 ~ 10 DEG C/min, and is incubated 60 ~ 300 minutes at 420 ~ 500 DEG C; Subordinate phase: sintering temperature is risen to 550 ~ 650 DEG C, temperature rise rate controls at 1 ~ 10 DEG C/min, and is incubated 180 ~ 360 minutes at 550 ~ 650 DEG C; Phase III: sintering temperature is risen to 1000 ~ 1100 DEG C, temperature rise rate controls at 1 ~ 15 DEG C/min, and is incubated 120 ~ 240 minutes at 1000 ~ 1100 DEG C; Fourth stage: sintering temperature is risen to 1200 DEG C ~ 1350 DEG C, temperature rise rate controls at 1 ~ 5 DEG C/min, and 120 ~ 360 minutes are incubated at 1200 DEG C ~ 1350 DEG C; After sintering, namely furnace cooling obtains the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation.
The main purpose of above-mentioned first stage is degreasing; Subordinate phase is middle temperature step of reaction, main purpose is that facilitating Fe and Al to react pore-creating generates compound between Fe-Al binary metal, facilitate Fe and Cr to react pore-creating and generate FeCr, react with compound between Fe-Al binary metal and FeCr simultaneously and generate Fe-Al-Cr ternary compound Fe
2alCr; Phase III is the pyroreaction stage, and main purpose is to facilitate further reacts and generates Fe
2alCr; Fourth stage is holding stage, and it is abundant that main purpose is to make sintering, and promote the lifting of even structure and performance.For suppressing the volatilization of hot stage lightweight element, above-mentioned phase III and fourth stage can adopt protection of inert gas to sinter; Or, also suitably can adjust proportioning raw materials to compensate the volatile quantity of lightweight element.
In the sintering process of experimental example 1 to 6, the sintering process parameter of four-stage is specifically as shown in table 2.In table 2, the unit of temperature rise rate is DEG C/min, and the unit of sintering time is minute.
Table 2: the sintering schedule of experimental example 1 to 6
The sintering schedule of 1.2 experimental examples 7
Sintering schedule comprises three phases.Sintering temperature rises to 500 DEG C from room temperature, and temperature rise rate controls at 5 DEG C/min, and is incubated 60 minutes at 500 DEG C; Subordinate phase: sintering temperature is risen to 630 DEG C, temperature rise rate controls at 3 DEG C/min, and 630 times insulations 300 minutes; Phase III: sintering temperature is risen to 1100 DEG C, temperature rise rate controls at 5 DEG C/min, and is incubated 120 minutes at 1100 DEG C.After sintering, namely furnace cooling obtains sintering Fe-Al base alloy porous material.
Two, the phase composite of material and performance measurement thereof
Detected sample 1 to 7 respectively by XRD, its result is: the phase composite of sample 1 is compound (FeAl) and Fe between Fe-Al binary metal
2alCr(is as Fig. 2); The phase composite of sample 2 is Fe
2alCr; The phase composite of sample 3 is Fe
2alCr and FeCr; The phase composite of sample 4 is compound, Fe between Fe-Al binary metal
2alCr and Fe
3si; The phase composite of sample 5 is compound and Fe between Fe-Al binary metal
2alCr; The phase composite of sample 6 is Fe
2alCr and FeCr; The phase composite of sample 7 is compound between Fe-Al binary metal.
Visible, the phase composite of the sintering Fe-Al base alloy porous material of the application is relevant with Cr content.When not mixing other elements, when Cr content is relatively less, the crystallization phases of sintering Fe-Al base alloy porous material is by compound and Fe between Fe-Al binary metal
2alCr forms (as samples 1); When Cr content increases to a certain degree, the crystallization phases of sintering Fe-Al base alloy porous material is by Fe
2alCr forms (as samples 2); When Cr content increases further, the crystallization phases of sintering Fe-Al base alloy porous material is by Fe
2alCr and FeCr forms (as samples 3).Between Fe-Al binary metal, compound can be Fe according to material rate
3al, FeAl.
The performance test of sample 1 to 7 is as table 3.Wherein, the mensuration of material porosity and mean pore size adopts bubble method; Filtration flux is specially on every m filter area, every kpa filtration pressure difference and per hour under air flux; The test of Tensile strength is recorded by drawing machine after sample 1 to 7 is processed as standard test specimen by CNS GB7963-87; It is that in the NaOH solution of 10%, the rate of weight loss of soaking at room temperature after 15 days characterizes that material erosion resistance adopts at massfraction; The high temperature oxidation resistance of material is that be incubated 90 hours under the air atmosphere of 1000 DEG C after, material rate of body weight gain characterizes.
Table 3: the performance test results of sample 1 to 7
Three, test result analysis
1) total result is tested see table 3.Wherein, the tensile strength degree of sample 1 to 4 all>=45MPa, thickness is about the sintering Fe-Al base alloy porous material air flux>=80m of 5mm
3/ m
2kpah(is obvious, thickness is less on this basis, flux will increase further), be that in the NaOH solution of 10%, the rate of weight loss of soaking at room temperature after 15 days is below 0.5% at massfraction, and under the air atmosphere of 1000 DEG C, be incubated material rate of body weight gain after 90 hours be less than 0.25%.And equal incapability reaches tensile strength degree>=45MPa in sample 5 and 7 simultaneously, air flux>=80m
3/ m
2kpah, be that in the NaOH solution of 10%, the rate of weight loss of soaking at room temperature after 15 days is below 0.5% at massfraction, and under the air atmosphere of 1000 DEG C, be incubated material rate of body weight gain after 90 hours be less than 0.25% person.
2) about the tensile strength of material, erosion resistance and high temperature oxidation resistance.The tensile strength of sample 1,4 is respectively 48MPa and 55MPa, close to lower value 45MPa; The tensile strength of sample 2,3 and 6 enlarges markedly, and reaches more than 60MPa.The erosion resistance of sample 1,4 and high temperature oxidation resistance are all lower than sample 2,3 and 6.This shows, after Fe, Al content is determined, tensile strength, the erosion resistance of material are all relevant to Cr content with high temperature oxidation resistance, and namely Cr content increases, and tensile strength, erosion resistance and high temperature oxidation resistance are all corresponding to be increased.Sample 7 is not containing Cr, therefore tensile strength, erosion resistance and high temperature oxidation resistance are minimum.In sample 5, Cr content is less, though therefore tensile strength higher than sample 7, but still lower than 45MPa, and erosion resistance and high temperature oxidation resistance are not very good yet.
3) about the perviousness of material.In sample 1 to 7, except the air flux of sample 2,3 and 4 is obviously high, the air flux of all the other samples is close; In addition, change from the air flux of sample 1 to 6, when porosity and mean pore size basically identical, when Cr is less than 30% of Fe, Al, Cr gross weight, with increasing of Cr content, air flux increases gradually, and after Cr content is more than 30% (as samples 6), air flux starts to decline.This shows, when the incorporation of Cr is less than 30% of Fe, Al, Cr gross weight, Cr and the Fe in raw material reacts and improves pore structure, can make up the impact that Al content declines on pore-creating and porosity, reduce filtration medium through resistance, desirable filtration flux can be obtained.
4) in general, in order to reach more excellent comprehensive use properties, the Fe that the application sinters in Fe-Al base alloy porous material can account for Fe, Al gross weight 70%, 73%, 76%, 80%, and the Cr in sintering Fe-Al base alloy porous material can account for Fe, Al, Cr gross weight 20%, 24%, 26% or 28%.In view of the more common Fe-Al intermetallic compound porous material of these sintering Fe-Al base alloy porous material at high temperature oxidation-resistances is significantly improved, therefore, the sintering Fe-Al base alloy porous material of the application is very suitable for making the filtering element for gas filtration, in particular for the filtering element of the high temperature air filtration of 300 ~ 800 DEG C.
Claims (2)
1. the preparation method of the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation, step comprises:
1) mixed powder is prepared: be 200 ~ 300 object Fe powder by particle diameter, particle diameter to be 200 ~ 300 object Al powder and particle diameter be-400 object Cr powder mix by the proportioning of to be 60 ~ 85%, Cr of Fe, Al gross weight be 10 ~ 30% of Fe, Al, Cr gross weight of Fe in the sintering Fe-Al base alloy porous material prepared;
2) granulation, drying and shaping: the mixed powder containing above-mentioned Fe powder, Al powder, Cr powder is carried out granulation, drying successively, drying temperature is set as 40 ~ 60 DEG C, be set as 4 ~ 8 hours time of drying, pressure forming is carried out after drying, time shaping, pressurize 20 ~ 80 seconds under 120 ~ 280MPa forming pressure, obtains pressed compact after pressure forming;
3) sinter: above-mentioned pressed compact is placed in sintering oven and sinters, sintering schedule comprises following four-stage: the first stage: sintering temperature rises to 420 ~ 500 DEG C from room temperature, temperature rise rate controls at 1 ~ 10 DEG C/min, and is incubated 60 ~ 300 minutes at 420 ~ 500 DEG C; Subordinate phase: sintering temperature is risen to 550 ~ 650 DEG C, temperature rise rate controls at 1 ~ 10 DEG C/min, and is incubated 180 ~ 360 minutes at 550 ~ 650 DEG C; Phase III: sintering temperature is risen to 1000 ~ 1100 DEG C, temperature rise rate controls at 1 ~ 15 DEG C/min, and is incubated 120 ~ 240 minutes at 1000 ~ 1100 DEG C; Fourth stage: sintering temperature is risen to 1200 DEG C ~ 1350 DEG C, temperature rise rate controls at 1 ~ 5 DEG C/min, and 120 ~ 360 minutes are incubated at 1200 DEG C ~ 1350 DEG C; After sintering, namely furnace cooling obtains the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation;
The sintering Fe-Al base alloy porous material of described resistance to high temperature oxidation, its porosity is 30 ~ 60%, mean pore size is 0.5 ~ 50 μm, and there is following feature: a) it is elementary composition primarily of Fe, Al, Cr tri-kinds, the weight sum of these three kinds of elements accounts for more than 90% of this sintering FeAl base alloy porous material weight, wherein, Fe is 60 ~ 85%, Cr of Fe, Al gross weight is 10 ~ 30% of Fe, Al, Cr gross weight; B) Cr in this sintering Fe-Al base alloy porous material mainly exists with the form of the chromium compounds of Fe-Al based compound, or mainly exist with the form of the chromium compounds of Fe-Al based compound and FeCr, and be uniformly distributed haply in this sintering Fe-Al base alloy porous material; C) its tensile strength>=45MPa, the sintering Fe-Al base alloy porous material air flux>=80m of thickness≤5mm
3/ (m
2kpah), be that in the NaOH solution of 10%, the rate of weight loss of soaking at room temperature after 15 days is below 0.5% at massfraction, and under the air atmosphere of 1000 DEG C, be incubated material rate of body weight gain after 90 hours be less than 0.25%.
2. the preparation method of the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation as claimed in claim 1, it is characterized in that: step 1) in Fe powder, Al powder and the Cr powder proportioning by be 70 ~ 80%, Cr of Fe, Al gross weight be 20 ~ 28% of Fe, Al, Cr gross weight of Fe in the sintering Fe-Al base alloy porous material prepared is mixed.
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| CN104630635B (en) * | 2015-03-05 | 2016-08-24 | 北京绿洁美科技有限公司 | A kind of ferrum-chromium-aluminum base porous metal material and preparation method thereof |
| CN106893898B (en) * | 2017-03-08 | 2018-12-14 | 湖南云平环保科技有限公司 | Porous material supporter and preparation method thereof between FeAl metal |
| 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 |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331477A (en) * | 1978-10-04 | 1982-05-25 | Nippon Electric Co., Ltd. | Porous titanium-aluminum alloy and method for producing the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3237115B2 (en) * | 1990-05-29 | 2001-12-10 | スズキ株式会社 | Method and product for producing foam of Ti-Al intermetallic compound |
-
2013
- 2013-07-31 CN CN201310329662.9A patent/CN103397244B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331477A (en) * | 1978-10-04 | 1982-05-25 | Nippon Electric Co., Ltd. | Porous titanium-aluminum alloy and method for producing the same |
Non-Patent Citations (3)
| Title |
|---|
| "Fe-Al合金多孔材料研究进展";王峰等;《粉末冶金技术》;20101227;第28卷(第6期);第463-466页 * |
| "FeAl金属间化合物多孔材料的制备";高海燕等;《材料研究学报》;20081025;第22卷(第5期);第485-489页 * |
| "Fe-Al金属间化合物多孔材料的研究";高海燕;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;20100315(第3期);正文第21页，第37-43页 * |
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