CN104630635B - A kind of ferrum-chromium-aluminum base porous metal material and preparation method thereof - Google Patents
A kind of ferrum-chromium-aluminum base porous metal material and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of ferrum-chromium-aluminum base porous metal material and preparation method thereof.Comprising the through hole that aperture is 500nm 40um in described material, the raw material preparing this material includes metallic aluminium, chromium powder, iron powder and carborundum and rare earth.The preparation process of described material is: first with iron powder vacuum-sintering, carborundum powder, rare earth are obtained the ferrum carborundum agglomerate containing rare earth; with iron powder melting under argon shield of agglomerate and aluminium ingot, chromium powder and surplus obtaining ferrum-chromium-aluminum base alloy pig; after broken for alloy pig; vacuum sphere wears into alloyed powder, finally compressing after alloyed powder, pore creating material, bonding agent mix homogeneously and sintering is i.e. obtained ferrum-chromium-aluminum base porous metal material.Material of the present invention has in advantages such as hot environment length in service life, and, preparation method of the present invention can realize industrialization on a large scale.
Description
Technical field
The present invention relates to a kind of strong containing particulate fluid filtration and high temperature to high-temperature dust-containing flue gas or high temperature
Spend excellent porous metals filter element and preparation method thereof, belong to porous metal material preparing technical field.
Background technology
Gather dust include cyclone dust collection, electricity, conventional smoke gas disposal including bag collection and wet method room temperature purification etc.
Method, it is difficult to directly high-temperature flue gas is filtered；In order to solve the problem during existing high temperature gathers dust, patent
CN101934177B proposes the purification using grain bed to carry out high-temperature flue gas, but this patented technology still difficulty is caught
The defects such as the particle dust in collection flue gas；Porous ceramics can realize the direct purification of high-temperature flue gas, but it resists
The aspect defects such as thermal shock resistance difference, have had a strong impact on the service life of filtration system；Although patent CN10195426B
With patent CN101913874B the life of porous ceramics proposed good solution, but still
Cannot fundamentally change the defect that ceramic material is intrinsic.It is presently used in the filtering material in high temperature fluid field
Being mostly the ceramic filter plate of mullite or carborundum, the maximum problem of ceramic filter plate is that fragility is big, heat resistanceheat resistant
Pinking is poor, in addition, it is difficult to reuse, this not only result in the life needing high temperature fluid to carry out filtering enterprise
Product cost is high, but also causes the waste of ceramic resources；The filter area of flat panel filter element is little, makes
With needing frequently replacing during this material, the Another reason place that when being also to use such material, cost is high.
In order to overcome the defect of pottery, patent 1314477C provides a kind of metal filter element, although this material
Material strainability is excellent, but owing to the filter area of this material is limited, needs when making filtration system to use
Such metal filter element substantial amounts of, thus cause high-temperature dust removal relatively costly.
Aludirome is a class Alfer, because can tie with matrix by Surface Creation one layer in high temperature environments
Close close compact aluminum oxide protecting film so that it is there is corrosion-resistant, antioxidation, impervious carbon and wear-resisting etc. excellent
Point, thus the biggest at high-temperature dust or the aspect application prospect such as high temperature fluid filtration and catalytic carrier.State at present
Inside and outside also carried out some use Aludiromes be matrix to prepare the research of porous metal material, such as: specially
First profit CN102286669A sprays chromium powder and aluminium powder on the porous bodies such as polyurethane sponge, through conducting resinl
Carry out Electrodeposition Bath of Iron after the operation such as dip-coating, heating cure and obtain ferrum-chromium-aluminum porous material；Patent
It is as base with foam shape metal (ferrum, nickel, copper and alloy thereof etc.) that CN101172257A prepares bubble iron chromium aluminum
Material, the porous surface at base material carries out flame-spraying ferrum-chromium-aluminum and obtains.Tap a blast furnace although these methods can be prepared
Chromium aluminum porous metal material, but there is the problem such as complex process, cost of material height；The most existing siderochrome
After aluminum at high temperature uses, due to the long ambassador of crystal grain, it becomes brittle, thus have impact on this kind of material and exist
Service life under hot environment.
For existing for the used filter element of existing hot environment, filter area is little, service life is short, difficult follow
The problem of the aspects such as ring use, the present inventor, through repeatedly studying, has invented the porous that a kind of hot environment uses
Metal filter element and preparation method thereof.
Summary of the invention
It is an object of the invention to overcome the deficiency of prior art and to improve a kind of heat impact strength good, anti-
High temperature corrosion property is excellent, filterability good, intensity is high ferrum-chromium-aluminum base porous metal material and preparation method.
One ferrum-chromium-aluminum base porous metal material of the present invention, including following component, composition by mass percentage:
Aluminum 3-7,
Chromium 15-25,
Carborundum 2-10,
Rare earth 0.03-0.5, surplus is ferrum.
One ferrum-chromium-aluminum base porous metal material of the present invention, described rare earth is mixed rare earth of lanthanum and cerium or rare-earth yttrium, lanthanum
In cerium mischmetal, the quality of each component configures in any proportion.
One ferrum-chromium-aluminum base porous metal material of the present invention, comprising aperture in described porous metal material is
The through hole of 500nm-40um.
The preparation method of the present invention a kind of ferrum-chromium-aluminum base porous metal material, comprises the steps:
The first step: preparation ferrum-carborundum agglomerate containing rare earth
Carborundum, the quality proportioning of rare earth in ferrum-chromium-aluminum base porous metal material according to design, by putting in proportion
Carborundum after great, the mass ratio of rare earth, weigh carborundum powder, rare earth respectively, is mixed to get mixed with iron powder
Close powder, after mixed-powder vacuum ball milling mix homogeneously, compressing, in 1200-1300 DEG C of vacuum-sintering
After 1-3 hour, furnace cooling obtains the ferrum containing rare earth-carborundum agglomerate；Control carborundum in mixed-powder
The gross mass of powder and rare earth and iron powder mass ratio are 1:1-2；
Second step: prepare the ferrum-chromium-aluminum base alloy pig of silicon carbide-containing, rare earth
The ferrum containing rare earth-carborundum agglomerate middle rare earth of obtaining according to the first step, carborundum, the quality of ferrum,
By the ferrum-chromium-aluminum each component proportion of base porous metal material of design, configure aluminium ingot, chromium powder and the iron powder of surplus,
Under argon atmosphere after 2000-2200 DEG C of melting 1-3 hour, furnace cooling obtains silicon carbide-containing, rare earth
Ferrum-chromium-aluminum base alloy pig；
3rd step: prepared sizes are at the siderochrome aluminium-based alloyed powder of 1-100um
The ferrum-chromium-aluminum base alloy pig obtained by second step crushes final vacuum and is milled to the siderochrome that granularity is 1-100um
Aluminium-based alloyed powder；
4th step: sinter molding
In mass ratio (8-10): (0.5-2): (0.5-1) weighs alloyed powder prepared by the 3rd step, pore creating material, bonding respectively
Agent, mix homogeneously, compressing after, under inert atmosphere or vacuum environment, with 1-3 DEG C/min heating rate
After rising to 600-800 DEG C of insulation 0.5-2 hour, rise to 1200-1400 DEG C with 5-10 DEG C/min heating rate,
Sintering 0.5-2h, furnace cooling, obtain ferrum-chromium-aluminum base porous metal material.
The preparation method of the present invention a kind of ferrum-chromium-aluminum base porous metal material, described pore creating material is selected from starch, urine
One in element, carbon ammonium, the particle size range of pore creating material is 0.5-40um.
The preparation method of the present invention a kind of ferrum-chromium-aluminum base porous metal material, described binding agent is polyvinyl alcohol, carboxylic
At least one in methylcellulose, hydroxy cellulose, Polyethylene Glycol, polyvinyl alcohol.
Have the advantage that of the present invention is analyzed:
(1) service life of material of the present invention is long, and the most at high temperature service life is long.This be mainly because of
For:
1. the metallic character of ferrum-chromium-aluminum material so that it is heat impact strength is outstanding, it is ensured that under big pressure also
Will not crush this filter element, this is that ceramic material is difficult to possess；Resistance to high temperature corrosion performance is excellent, the highest
Use temperature up to 1400 DEG C；
2. carborundum and the existence of rare earth, greatly inhibit ferrum-chromium-aluminum material crystal grain in high temperature environments long
Greatly, the high-temperature brittleness problem of ferrum-chromium-aluminum material is fundamentally solved；
(2) material of the present invention is reusable.This is primarily due to:
1. on the one hand, dust particle in filtering material can be produced by boasting by operations such as blowbacks, again returns
Return and use；On the other hand, it is also possible to process by alkali liquor, acid solution etc. and dredge the hole being blocked, it is achieved repeatedly
Utilize.
2. selected and grain composition by the particle diameter of ferrum-chromium-aluminum powder, it is possible to obtain different porosities and aperture are big
Little porous metal material, this makes this Project Technical can be used to produce and be adapted to containing different-grain diameter granule fluid
Filter；Further, the metallic character of material of the present invention is greatly improved the heat transfer property of material, for by this material
The field such as the application heat transfer being extended to extreme environment by filtration lay a good foundation.
Accompanying drawing explanation
Accompanying drawing 1 is the SEM figure of the ferrum-chromium-aluminum base porous metal material of the embodiment of the present invention 1 preparation.
From accompanying drawing 1 it can be seen that the ferrum-chromium-aluminum base porous metal material of the embodiment of the present invention 1 preparation has bright
Aobvious three-dimensional communication hole, porosity reaches 62%.
Detailed description of the invention
Enforcement to the present invention is described further below in conjunction with the accompanying drawings, but the present invention is not limited thereto.
Embodiment 1
Ferrum-chromium-aluminum Quito mesoporous metal material component of preparation, be by mass percentage:
Aluminum 3, chromium 18, carborundum 3, mixed rare earth of lanthanum and cerium 0.03, surplus is ferrum.
Its preparation method, comprises the steps:
The first step: preparation ferrum-carborundum agglomerate containing rare earth
Carborundum 3, the quality proportioning of rare earth 0.03 in ferrum-chromium-aluminum base porous metal material according to design, press
The mass ratio of the carborundum after 5 times of amplifications is 15 in proportion, and the mass ratio of rare earth is 0.15, weighs carbon respectively
15 kilograms of SiClx powder, rare earth 0.15 kilogram, be mixed to get mixed-powder with 15.15 kilograms of iron powders, will be mixed
After closing powder under vacuum ball milling mix homogeneously, compressing, after 1200-1300 DEG C of vacuum-sintering 2 hours, with
Stove cooling obtains the ferrum-carborundum agglomerate containing rare earth；
Second step: prepare the ferrum-chromium-aluminum base alloy pig of silicon carbide-containing, rare earth
The ferrum containing rare earth-carborundum agglomerate middle rare earth of obtaining according to the first step, carborundum, the quality of ferrum,
By the ferrum-chromium-aluminum each component proportion of base porous metal material of design, configure aluminium ingot 15 kilograms, chromium powder 90 kilograms,
Surplus is iron powder, and under argon atmosphere after 2000-2200 DEG C of melting 2 hours, furnace cooling obtains carbon containing
SiClx, the ferrum-chromium-aluminum base alloy pig of rare earth；
3rd step: prepared sizes are at the siderochrome aluminium-based alloyed powder of 1-100um
The ferrum-chromium-aluminum base alloy pig obtained by second step crushes final vacuum and is milled to the siderochrome that granularity is 1-100um
Aluminium-based alloyed powder；
4th step: sinter molding
In mass ratio (8-10): (0.5-2): (0.5-1) weighs alloyed powder prepared by the 3rd step, pore creating material, bonding respectively
Agent, mix homogeneously, compressing after, under inert atmosphere or vacuum environment, with 1-3 DEG C/min heating rate
After rising to 600-800 DEG C of insulation 0.5-2 hour, rise to 1200-1400 DEG C with 5-10 DEG C/min heating rate,
Sintering 1.5h, furnace cooling, obtain ferrum-chromium-aluminum base porous metal material.
Pore creating material is starch, and the particle size range of pore creating material is 0.5-2um；Bonding agent is polyvinyl alcohol；
Ferrum-chromium-aluminum Quito mesoporous metal material prepared by the present embodiment shows excellent anti-pressure ability and antioxidation
Performance, its comprcssive strength reaches 52.68MPa；Oxidation weight gain rate after 800 DEG C of oxidation 120min in atmosphere
For 1.0mg/g；It addition, prepared porous material is first warmed up to 800 DEG C, is placed in cold water quenching 20
Individual all after dates, material has no substantially destruction, shows that the resistance to rapid heat cycle ability of material of the present invention is excellent.
Embodiment 2
Ferrum-chromium-aluminum Quito mesoporous metal material component of preparation, be by mass percentage:
Aluminum 5, chromium 20, carborundum 6, rare-earth yttrium 0.25, surplus is ferrum.
Its preparation method, comprises the steps:
The first step: preparation ferrum-carborundum agglomerate containing rare earth
Carborundum 6, the quality proportioning of rare earth 0.25 in ferrum-chromium-aluminum base porous metal material according to design, press
The mass ratio of the carborundum after 4 times of amplifications is 24 in proportion, and the mass ratio of rare earth is 1, weighs carborundum respectively
24 kilograms of powder, rare earth 1 kilogram, iron powder 50 kilograms is mixed to get mixed-powder, by mixed-powder vacuum sphere
After mill mix homogeneously, compressing, after 1200-1300 DEG C of vacuum-sintering 2 hours, furnace cooling is contained
The ferrum of rare earth-carborundum agglomerate；
Second step: prepare the ferrum-chromium-aluminum base alloy pig of silicon carbide-containing, rare earth
The ferrum containing rare earth-carborundum agglomerate middle rare earth of obtaining according to the first step, carborundum, the quality of ferrum,
By the ferrum-chromium-aluminum each component proportion of base porous metal material of design, configure aluminium ingot 20 kilograms, chromium powder 80 kilograms
And the iron powder of surplus, under argon atmosphere after 2000-2200 DEG C of melting 2 hours, furnace cooling is contained
Carborundum, the ferrum-chromium-aluminum base alloy pig of rare earth；
3rd step: prepared sizes are at the siderochrome aluminium-based alloyed powder of 1-100um
The ferrum-chromium-aluminum base alloy pig obtained by second step crushes final vacuum and is milled to the siderochrome that granularity is 1-100um
Aluminium-based alloyed powder；
4th step: sinter molding
In mass ratio (8-10): (0.5-2): (0.5-1) weighs alloyed powder prepared by the 3rd step, pore creating material, bonding respectively
Agent, mix homogeneously, compressing after, under inert atmosphere or vacuum environment, with 1-3 DEG C/min heating rate
After rising to 600-800 DEG C of insulation 0.5-2 hour, rise to 1200-1400 DEG C with 5-10 DEG C/min heating rate,
Sintering 1.5h, furnace cooling, obtain ferrum-chromium-aluminum base porous metal material.
Pore creating material is carbamide, and the particle size range of pore creating material is 30-40um；Bonding agent is carboxymethyl cellulose；
The porosity of ferrum-chromium-aluminum base porous metal material prepared by the present embodiment is 68%, and comprcssive strength reaches
49.23MPa, the oxidation weight gain rate after 800 DEG C of oxidation 240min is 1.1mg/g in atmosphere；It addition, will
Prepared porous material is first warmed up to 800 DEG C, is placed in cold water 30 all after dates of quenching, and material has no bright
Aobvious destruction, shows that the resistance to rapid heat cycle ability of material of the present invention is excellent.
Embodiment 3
Ferrum-chromium-aluminum Quito mesoporous metal material component of preparation, be by mass percentage:
Aluminum 6, chromium 25, carborundum 10, rare-earth yttrium 0.5, surplus is ferrum.
Its preparation method, comprises the steps:
The first step: preparation ferrum-carborundum agglomerate containing rare earth
Carborundum 10, the quality proportioning of rare earth 0.5 in ferrum-chromium-aluminum base porous metal material according to design, press
The mass ratio of the carborundum after 2 times of amplifications is 20 in proportion, and the mass ratio of rare earth is 1, weighs carbonization respectively
Silica flour 20 kilograms, rare earth 1 kilogram, iron powder 21 kilograms is mixed to get mixed-powder, by mixed-powder vacuum
After ball milling mix homogeneously, compressing, after 1200-1300 DEG C of vacuum-sintering 2 hours, furnace cooling obtains
Ferrum containing rare earth-carborundum agglomerate；
Second step: prepare the ferrum-chromium-aluminum base alloy pig of silicon carbide-containing, rare earth
The ferrum containing rare earth-carborundum agglomerate middle rare earth of obtaining according to the first step, carborundum, the quality of ferrum,
By the ferrum-chromium-aluminum each component proportion of base porous metal material of design, configure aluminium ingot 12 kilograms, chromium powder 50 kilograms
And the iron powder of surplus, under argon atmosphere after 2000-2200 DEG C of melting 2 hours, furnace cooling is contained
Carborundum, the ferrum-chromium-aluminum base alloy pig of rare earth；
3rd step: prepared sizes are at the siderochrome aluminium-based alloyed powder of 1-100um
The ferrum-chromium-aluminum base alloy pig obtained by second step crushes final vacuum and is milled to the siderochrome that granularity is 1-100um
Aluminium-based alloyed powder；
4th step: sinter molding
In mass ratio (8-10): (0.5-2): (0.5-1) weighs alloyed powder prepared by the 3rd step, pore creating material, bonding respectively
Agent, mix homogeneously, compressing after, under inert atmosphere or vacuum environment, with 1-3 DEG C/min heating rate
After rising to 600-800 DEG C of insulation 0.5-2 hour, rise to 1200-1400 DEG C with 5-10 DEG C/min heating rate,
Sintering 2h, furnace cooling, obtain ferrum-chromium-aluminum base porous metal material.
Pore creating material is carbon ammonium, and the particle size range of pore creating material is 30-40um；Bonding agent is polyvinyl alcohol；
The porosity of ferrum-chromium-aluminum base porous metal material prepared by the present embodiment is 65%, and comprcssive strength reaches
51.65MPa, the oxidation weight gain rate after 850 DEG C of oxidation 360min is 1.0mg/g in atmosphere；It addition, will
Prepared porous material is first warmed up to 800 DEG C, is placed in cold water 50 all after dates of quenching, and material has no bright
Aobvious destruction, shows that the resistance to rapid heat cycle ability of material of the present invention is excellent.
Claims (6)
1. a ferrum-chromium-aluminum base porous metal material, including following component, composition by mass percentage:
Aluminum 3-7,
Chromium 15-25,
Carborundum 2-10,
Rare earth 0.03-0.5, surplus is ferrum；
Described rare earth is mixed rare earth of lanthanum and cerium or rare-earth yttrium；
Described porous metal material comprises the through hole that aperture is 500nm-40um；
The preparation method of described a kind of ferrum-chromium-aluminum base porous metal material, comprises the steps:
The first step: preparation ferrum-carborundum agglomerate containing rare earth
Carborundum, the quality proportioning of rare earth in ferrum-chromium-aluminum base porous metal material according to design, by the carborundum after amplifying in proportion, the mass ratio of rare earth, weigh carborundum powder, rare earth respectively, it is mixed to get mixed-powder with iron powder, after mixed-powder vacuum ball milling mix homogeneously, compressing, after 1200-1300 DEG C of vacuum-sintering, furnace cooling obtains the ferrum containing rare earth-carborundum agglomerate；
Second step: prepare the ferrum-chromium-aluminum base alloy pig of silicon carbide-containing, rare earth
The ferrum containing rare earth-carborundum agglomerate middle rare earth of obtaining according to the first step, carborundum, the quality of ferrum; the ferrum-chromium-aluminum each component proportion of base porous metal material by design; configuration aluminium ingot, chromium powder and the iron powder of surplus; in 2000-2200 DEG C of melting under argon atmosphere, furnace cooling obtains the ferrum-chromium-aluminum base alloy pig of silicon carbide-containing, rare earth；
3rd step: prepared sizes are at the siderochrome aluminium-based alloyed powder of 1-100um
The ferrum-chromium-aluminum base alloy pig obtained by second step crushes final vacuum and is milled to the siderochrome aluminium-based alloyed powder that granularity is 1-100um；
4th step: sinter molding
In mass ratio (8-10): (0.5-2): (0.5-1) weighs alloyed powder, pore creating material, bonding agent prepared by the 3rd step respectively, mix homogeneously, after compressing, under inert atmosphere or vacuum environment, after rising to 600-800 DEG C of insulation with 1-3 DEG C/min heating rate, rise to 1200-1400 DEG C with 5-10 DEG C/min heating rate, sintering, furnace cooling, obtains ferrum-chromium-aluminum base porous metal material.
A kind of ferrum-chromium-aluminum base porous metal material the most according to claim 1, it is characterised in that: in the first step, the vacuum-sintering time is 1-3 hour.
A kind of ferrum-chromium-aluminum base porous metal material the most according to claim 1, it is characterised in that: in second step, in 2000-2200 DEG C of melting 1-3 hour under argon atmosphere.
A kind of ferrum-chromium-aluminum base porous metal material the most according to claim 1, it is characterised in that: in the 4th step, 600-800 DEG C is incubated 0.5-2 hour, 1200-1400 DEG C, sinters 0.5-2 hour.
A kind of ferrum-chromium-aluminum base porous metal material the most according to claim 1, it is characterised in that: described pore creating material one in starch, carbamide, carbon ammonium, the particle size range of pore creating material is 0.5-40um.
6. according to a kind of ferrum-chromium-aluminum base porous metal material described in claim 1-5 any one, it is characterised in that: described bonding agent is at least one in polyvinyl alcohol, carboxymethyl cellulose, hydroxy cellulose, Polyethylene Glycol, polyvinyl alcohol.
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| CN109022881A (en) * | 2018-10-12 | 2018-12-18 | 成都先进金属材料产业技术研究院有限公司 | Sago is as the purposes of pore creating material, pore creating material and its method for preparing foam metal |
| CN110496967B (en) * | 2019-08-29 | 2021-12-28 | 上海材料研究所 | Method for preparing FeCrAl metal honeycomb carrier for infrared burner by plasticizing extrusion |
| 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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| US4758272A (en) * | 1987-05-27 | 1988-07-19 | Corning Glass Works | Porous metal bodies |
| CN101229699B (en) * | 2007-01-25 | 2012-06-27 | 湖南科力远新能源股份有限公司 | Lacunaris metal carrier and manufacturing method thereof |
| KR101212786B1 (en) * | 2010-08-10 | 2012-12-14 | 프라운호퍼-게젤샤프트 츄어 푀르더룽 데어 안게반텐 포르슝에.파우. | Open-porous metal foam body and a method of fabricating the same |
| CN102127731B (en) * | 2011-02-17 | 2012-06-27 | 长沙力元新材料有限责任公司 | Method for preparing porous metal substrate with high temperature oxidation resistance |
| CN102492865B (en) * | 2011-12-01 | 2013-08-14 | 西北有色金属研究院 | Porous material for purifying high-temperature gas and preparation method thereof |
| CN103343255B (en) * | 2013-07-18 | 2015-06-10 | 西北有色金属研究院 | Method for increasing sound absorption coefficient of FeCrAl fibrous porous material |
| CN103397244B (en) * | 2013-07-31 | 2016-03-02 | 成都易态科技有限公司 | The preparation method of the sintering Fe-Al base alloy porous material of resistance to high temperature oxidation |
| CN103397256B (en) * | 2013-07-31 | 2015-12-23 | 成都易态科技有限公司 | The sintering Fe-Al base alloy porous material of resistance to high temperature oxidation and filtering element |
| CN104233004B (en) * | 2014-08-31 | 2016-08-24 | 成都易态科技有限公司 | Powder sintered porous filtering alloy, its preparation method and its pre-molding body |
| CN104726775B (en) * | 2015-03-05 | 2016-09-28 | 中南大学 | A kind of aluminium-based porous alloy material of siderochrome and preparation method |
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