CN107824790A - A kind of preparation method of porous vanadium chromium titanium material - Google Patents
A kind of preparation method of porous vanadium chromium titanium material Download PDFInfo
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- CN107824790A CN107824790A CN201711015678.7A CN201711015678A CN107824790A CN 107824790 A CN107824790 A CN 107824790A CN 201711015678 A CN201711015678 A CN 201711015678A CN 107824790 A CN107824790 A CN 107824790A
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- vanadium chromium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
- B22F3/1125—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers involving a foaming process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
- B22F3/1134—Inorganic fillers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/20—Use of vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
A kind of preparation method of the porous vanadium chromium titanium material disclosed by the invention for being field of powder metallurgy, comprises the following steps：Batch mixing, metallic titanium powder, chromium powder, metal vanadium powder and pore creating material are put into ball grinder and carries out mixed powder and obtains mixed-powder, the mass percent of metal powder is 70%~50% or so in mixed-powder, and the mass percent of pore creating material is 30%~50% or so；Cold moudling, the mixed-powder obtained in upper step is fitted into grinding tool, cold moudling is carried out under 100~150MPa uniaxial pressure, pressed compact is obtained after moving back mould；Vacuum-sintering, above-mentioned pressed compact is put into charge can, closed the lid, is vacuumized, vacuum is reached 10‑3Start to sinter after Pa, sintering temperature is 900~1200 DEG C, 1~3h of soaking time, finally obtains required porous vanadium chromium titanium material.The preparation method technique is simple, cost is low, can control the porosity and aperture and the porous material that can obtain uniform texture of product.
Description
Technical field
The present invention relates to field of powder metallurgy, more particularly to a kind of preparation method of porous vanadium chromium titanium material.
Background technology
In the 1960s, particularly since the eighties, domestic and international material worker does in terms of metal polyporous material
Substantial amounts of research work.Research finds that metal polyporous material is except the basic metal category such as the solderability with metal material
Outside property, because substantial amounts of internal void metal polyporous material shows many excellent characteristics, such as light weight, specific surface area
Greatly, energy absorption is good, low thermal conductivity (closed pore body), heat exchange heat-sinking capability high (through hole body), sound absorption properties good (through hole body), infiltration
Property excellent (through hole body), electromagnetic wave absorbability good (through hole body), resistance flame, heat and flame, anti-thermal shock, air-sensitive, can regenerate, processability it is good
Deng, the multiple functions such as achievable filtering, separation, throttling, catalytic reaction, sound insulation, heat-insulated, antidetonation, absorption, being widely used in
The every field such as work, metallurgy and environmental protection.
With the raising widened with application environment requirement of application field, occur that titanium, stainless steel etc. be anticorrosive, high temperature resistant
Powder metallurgy porous material and specific use POROUS TUNGSTEN, zirconium and refractory metal compound porous material.Wherein, V-Cr-Ti
Alloy has the performances such as excellent low activation characteristic, elevated temperature strength, resistance to liquid metal corrosion, anti-neutron radiation, and these advantages make
It turns into preferable fusion reactor candidate structure material.It is dual that porous V-Cr-Ti alloys are that one kind has function and structure concurrently
The new engineering material of attribute advantage, available for Industrial Wastewater Treatment, filtering and separation, vehicle maintenance service, catalyst carrier,
Many fields such as nuclear industry.Prior art technique when making porous V-Cr-Ti alloys is complex, such as using 3D printing skill
Art, this method efficiency is low, cost is high, is not suitable for volume production, therefore, it is necessary to study a kind of new preparation method.
The content of the invention
To overcome existing porous V-Cr-Ti alloy preparation technologies complicated, the deficiencies such as volume production is low, skill to be solved by this invention
Art problem is：There is provided a kind of technique is simple, cost is low, can volume production porous vanadium chromium titanium preparation method for material.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of preparation method of porous vanadium chromium titanium material, comprises the following steps：
A, batch mixing, metallic titanium powder, chromium powder, metal vanadium powder and pore creating material is put into ball grinder and carries out mixed powder and obtains mixed powder
End, the mass percent of metal powder is 70%~50% or so in mixed-powder, the mass percent of pore creating material for 30%~
50% or so；
B, cold moudling, the mixed-powder obtained in upper step is fitted into grinding tool, under 100~150MPa uniaxial pressure
Cold moudling is carried out, pressed compact is obtained after moving back mould；
C, vacuum-sintering, above-mentioned pressed compact is put into charge can, closed the lid, is vacuumized, vacuum is reached 10-3Opened after Pa
Begin sintering, and sintering temperature is 900~1200 DEG C, 1~3h of soaking time, finally obtains required porous vanadium chromium titanium material.
It is further that the pore creating material is the ammonium hydrogen carbonate particle that granularity is 80~100 μm.
It is further to add bonding agent in also needing toward batch mixing before carrying out cold moudling.
It is further that the bonding agent is PVA.
The beneficial effects of the invention are as follows：The present invention use powder metallurgy principle, by metallic titanium powder, chromium powder, metal vanadium powder and
Pore creating material is mixed evenly to prepare raw material, then obtains required porous vanadium chromium titanium material by cold moudling and vacuum-sintering, should
Preparation method simple production process, cost are low, can control porosity and the aperture and can to obtain institutional framework equal of product
Even porous material.
Embodiment
With reference to embodiment, the present invention is further described.
A kind of preparation method of porous vanadium chromium titanium material, comprises the following steps：
A, batch mixing, metallic titanium powder, chromium powder, metal vanadium powder and pore creating material is put into ball grinder and carries out mixed powder and obtains mixed powder
End, the mass percent of metal powder is 70%~50% or so in mixed-powder, the mass percent of pore creating material for 30%~
50% or so；
B, cold moudling, the mixed-powder obtained in upper step is fitted into grinding tool, under 100~150MPa uniaxial pressure
Cold moudling is carried out, pressed compact is obtained after moving back mould；
C, vacuum-sintering, above-mentioned pressed compact is put into charge can, closed the lid, is vacuumized, vacuum is reached 10-3Opened after Pa
Begin sintering, and sintering temperature is 900~1200 DEG C, 1~3h of soaking time, finally obtains required porous vanadium chromium titanium material.
Powder metallurgy is to produce metal dust or made with metal dust (or mixture of metal dust and non-metal powder)
For raw material, by shaping and sintering, the technology of manufacture metal material, composite and all kinds product.The technology
In Production of Ceramics field using more, but in the preparation of porous metal material almost beyond example.The present inventor
Above-mentioned preparation method is drawn after being summarized by long term test, the key point of this method is to be provided with rational quality proportioning,
And the accurate configuration of the parameter such as briquetting pressure, vacuum and sintering temperature, using the porous vanadium chromium titanium prepared by this method
Material has the advantages that Stability Analysis of Structures, low activation characteristic, high temperature resistant, corrosion-resistant.
The pore creating material is the ammonium hydrogen carbonate particle that granularity is 80~100 μm.Optimal case is the carbonic acid using about 100 μm
Hydrogen ammonium, to make the porous vanadium chromium titanium material hole after shaping uniform, and Stability Analysis of Structures.Why it is used as and is made using ammonium hydrogen carbonate
Hole agent, it is because after ammonium hydrogen carbonate addition material, carbon dioxide and ammonia can be released when being heated, is overflowed from material,
So as to produce pore space structure, and any reaction will not be produced with material.
Further, will not be loose because of expansion in order to ensure the stability of the pressed compact when carrying out vacuum-sintering, carrying out
Can be toward some bonding agents be added in batch mixing, to improve the adhesive property between powder before cold moudling.The bonding agent is preferably adopted
With PVA, i.e. polyvinyl alcohol, the material has unique strong adherence, pliability, solvent resistance etc., as auxiliary additive,
The stability of sintering and final Forming Quality can be improved.
The implementation of porous material is prepared using different component proportioning, briquetting pressure and sintering temperature for inventor below
Example, is finally obtained for qualified porous material.
Embodiment one：
Pore creating material ammonium hydrogen carbonate is obtained into particle diameter as 80~100 μm or so by screening.Ammonium hydrogen carbonate pore creating material and metal
Mixed powder mass ratio is 3:1, after being well mixed, add in stainless steel grinding tool, it is compressing using unidirectional oil pressure universal testing machine,
Briquetting pressure 80MPa, pressurize 1min obtain green compact.Green compact are inserted into vacuum as 10-3Sintered in Pa vacuum sintering furnaces, sintering temperature
900 DEG C of degree, soaking time 2h, furnace cooling obtains porous material.
Embodiment two：
Pore creating material ammonium hydrogen carbonate is obtained into particle diameter as 80~100 μm or so by screening.Ammonium hydrogen carbonate pore creating material and metal
Mixed powder mass ratio is 2:1, after being well mixed, add in stainless steel grinding tool.Then mixed powder is added in stainless steel grinding tool, used
Unidirectional oil pressure universal testing machine is compressing, and briquetting pressure 100MPa, pressurize 1min obtains green compact.Green compact are inserted into vacuum is
10-3Sintered in Pa vacuum sintering furnaces, 1100 DEG C of sintering temperature, soaking time 2h, furnace cooling obtains porous material.
Embodiment three：
Pore creating material ammonium hydrogen carbonate is obtained into particle diameter as 80~100 μm or so by screening.Ammonium hydrogen carbonate pore creating material and metal
Mixed powder mass ratio is 1:1, after being well mixed, add in stainless steel grinding tool.Then mixed powder is added in stainless steel grinding tool, used
Unidirectional oil pressure universal testing machine is compressing, and briquetting pressure 150MPa, pressurize 1min obtains green compact.Green compact are inserted into vacuum is
10-3Sintered in Pa vacuum sintering furnaces, 1200 DEG C of sintering temperature, soaking time 3h, furnace cooling obtains porous material.
Claims (4)
1. a kind of preparation method of porous vanadium chromium titanium material, it is characterized in that, comprise the following steps：
A, batch mixing, metallic titanium powder, chromium powder, metal vanadium powder and pore creating material is put into ball grinder and carries out mixed powder and obtains mixed-powder,
The mass percent of metal powder is 70%~50% or so in mixed-powder, and the mass percent of pore creating material is 30%~50%
Left and right；
B, cold moudling, the mixed-powder obtained in upper step is fitted into grinding tool, carried out under 100~150MPa uniaxial pressure
Cold moudling, pressed compact is obtained after moving back mould；
C, vacuum-sintering, above-mentioned pressed compact is put into charge can, closed the lid, is vacuumized, vacuum is reached 10-3Start to burn after Pa
Knot, sintering temperature are 900~1200 DEG C, 1~3h of soaking time, finally obtain required porous vanadium chromium titanium material.
2. a kind of preparation method of porous vanadium chromium titanium material as claimed in claim 1, it is characterized in that：The pore creating material is granularity
For 80~100 μm of ammonium hydrogen carbonate particle.
3. a kind of preparation method of porous vanadium chromium titanium material as claimed in claim 1, it is characterized in that：Before cold moudling is carried out
Also need to add bonding agent in toward batch mixing.
4. a kind of preparation method of porous vanadium chromium titanium material as claimed in claim 3, it is characterized in that：The bonding agent is PVA.
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| CN201711015678.7A CN107824790A (en) | 2017-10-25 | 2017-10-25 | A kind of preparation method of porous vanadium chromium titanium material |
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| CN201711015678.7A CN107824790A (en) | 2017-10-25 | 2017-10-25 | A kind of preparation method of porous vanadium chromium titanium material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846169A (en) * | 2020-12-31 | 2021-05-28 | 广东省科学院材料与加工研究所 | Porous metal powder injection molding feed, preparation method thereof and porous metal special-shaped part |
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