CN105018697A - Preparation method for novel porous iron-base alloy - Google Patents
Preparation method for novel porous iron-base alloy Download PDFInfo
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- CN105018697A CN105018697A CN201410182792.9A CN201410182792A CN105018697A CN 105018697 A CN105018697 A CN 105018697A CN 201410182792 A CN201410182792 A CN 201410182792A CN 105018697 A CN105018697 A CN 105018697A
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Abstract
The invention aims at providing a preparation technology for a porous iron-base alloy of a three-dimensional through-hole structure. The preparation technology for the porous iron-base alloy is characterized in that in a vacuum environment, a volatile alloying element in an iron-base alloy is volatilized gradually, the porous iron-base alloy is formed finally, at least one volatile alloying element exists in the raw material iron-base alloy, and it is required that the vapor pressure of the volatile alloying element is higher than that of a matrix element in the iron-base alloy, and a uniform alloy or solid solution can be formed by the volatile alloying element and the matrix alloying element. The preparation technology is simple in method and suitable for large-scale production, the porosity of the obtained porous iron-base alloy is adjustable, and the obtained porous iron-base alloy can be widely applied to the fields including separation, filtration, catalysis, noise reduction, shock absorption, shielding, heat exchange and the like.
Description
Technical field
The invention belongs to processing preparation field, a kind of preparation method of novel porous ferrous alloy is provided especially.
Background technology
Metal polyporous material is current development a kind of functional materials faster, it has good penetrability, aperture is adjustable, corrosion-resistant, high temperature resistant, intensity advantages of higher, the materials such as strainer, separatory membrane, sound damper, support of the catalyst, battery electrode, flame-proof explosion-proof can be made, be widely used in industries such as nuclear power, petrochemical industry, metallurgy, machinery, medicine, environmental protection.
In nuclear industry, Porous Stainless Steel strainer is for the filtration etc. of cooling gas; In aerospace industry, Porous Stainless Steel can be used for the purification etc. of aircraft hydraulic oil; At paper industry, stainless steel porous material is used for paper pulp rinsing and sewage disposal; In petrochemical industry, Porous Stainless Steel is used for silt separation, the separation of oily wax, natural gas filtering etc. in drilling well.
From the early in the twentieth century mankind, prepare porous metal material with powder metallurgy process count, the manufacture history of porous metal has last 100 years, its traditional preparation method constantly develops, new processing method constantly occurs, mainly contains: powder sintering type, fiber sintering type, compound, appositional pattern, corrosion type etc.For Porous Stainless Steel, main preparation method has powder sintering, directional solidification method etc.But the Porous Stainless Steel aperture of preparation is usually comparatively large, is difficult to the needs meeting multiple fields.The invention provides and a kind ofly prepare the Porous Stainless Steel of micron order and the following size of micron or the method for ferrous alloy on a large scale, to meet the application of Porous Stainless Steel at numerous areas such as the energy, Aeronautics and Astronautics, chemical industry, building materials, metallurgy, nuclear power, petrochemical industry, machinery, medicine and environmental protection.
Summary of the invention
The object of the present invention is to provide a kind of preparation technology with the porous iron-based alloy of three-dimensional through hole structure.
The present invention specifically provides a kind of preparation method of novel porous ferrous alloy, it is characterized in that: in vacuum environment, volatile alloy element in ferrous alloy is volatilized gradually, the porous iron-based alloy of final formation, wherein has a kind of volatile alloy element in starting material ferrous alloy at least, require the vapour pressure higher than the vapour pressure of matrix element in ferrous alloy (at least at high three orders of magnitude of same temperature) of volatile alloy element, and uniform alloy or sosoloid can be formed with matrix elements.
Ultimate principle of the present invention to utilize in ferrous alloy one or more volatile alloy elements (pore-creating element) in the relatively high vapour pressure of specific temperature range, volatilize gradually in vacuum environment, vacuum degree control, at below 10Pa, finally forms Porous Stainless Steel or ferrous alloy.According to above principle, in starting material ferrous alloy, the atomic percent of volatile alloy element controls to form different porositys between 20%-80%, described volatile alloy element be have the manganese of higher vapor pressure, zinc, cadmium, bismuth, barium, calcium, europium, lithium, selenium, magnesium, strontium, antimony, tellurium, thallium, ytterbium one or more.
The original ferrous alloy preparing porous iron-based alloy can adopt the method such as melting or powder metallurgy to prepare, surface finish descaling, according to the fusing point of different ferrous alloy and the relation between corresponding pore-creating element vapour pressure and temperature, high vacuum is continued 200 DEG C of-1200 DEG C of temperature ranges, the alloy such as manganese, zinc, cadmium, magnesium wherein with higher vapour pressure is deviate from, the three-dimensional ferrous alloy of final acquisition.Preferred manganese element is as the pore-creating element of ferrous alloy, and manganese alloy content controls between 30at.%-60at.%, carries out vacuum demanganize process and obtain porous iron-based alloy at 800 DEG C of-1100 DEG C of temperature.
Also can be plated by surface ion, the surface treatment method such as spraying prepares above-described alloy layer at common alloy surface, be obtained the gradient material of porous surface by this technique.Or the powdered alloy adopting treatment process of the present invention granularity to be greater than more than 10 microns is prepared into porous alloy powder or spheroid.
Adopt novel porous ferrous alloy prepared by the method for the invention, its pore size distribution is 0.1-100 micron.
The invention has the advantages that:
(1), vacuum heat treatment process is ripe, can carry out large-scale production, not only can prepare blocks of large, is also particularly suitable for preparing ultra-thin stainless steel paillon foil or common alloy steel paillon foil or powder.
(2), adopt the three-dimensional porous stainless steel prepared of the inventive method or ferrous alloy to have through-hole structure, porosity can regulate according to alloy ratio.
(3), the Porous Stainless Steel prepared of the present invention or ferrous alloy, may be used for the fields such as separation, filtration, catalysis, noise reduction, shock-absorbing, shielding, heat exchange.
Accompanying drawing explanation
The three-dimensional porous Stainless Steel Alloy picture that Fig. 1 embodiment 3 obtains.
Embodiment
Following examples will be further described the present invention, but not thereby limiting the invention.
If no special instructions, in the present embodiment, all percentage ratio all represents atomic percent.
Embodiment 1
Adopt high manganese 304 stainless steel of self-control, vacuum induction furnace is adopted common 304 stainless steels and pure manganese to be formed with 1:1 ratio (mass ratio) mixed smelting, the direct Linear cut of ingot casting is prepared into 10 × 10 × 1mm small pieces, be suspended in laboratory room small-sized vacuum heat treatment furnace, continue high vacuum 3 hours 1000 DEG C of insulations, vacuum tightness remains on below 10Pa, obtains three-dimensional porous stainless steel, pore size distribution is 1-10 micron, and porosity is about 40%.
Embodiment 2
Adopt self-control Ferro Manganese (60% Fe content), preparation 10 × 10 × 0.5mm small pieces, be suspended in laboratory room small-sized vacuum heat treatment furnace, high vacuum 2 hours are continued 900 DEG C of insulations, vacuum tightness remains on below 10Pa, obtain three-dimensional porous pure iron, pore size distribution is 1-20 micron, and porosity is about 50%.
Embodiment 3
Adopt high manganese 316 stainless steel of self-control, vacuum induction furnace is adopted common 316 stainless steels and pure manganese to be formed with 1:1 ratio (mass ratio) mixed smelting, the direct Linear cut Linear cut of ingot casting becomes 10 × 15 × 1mm thin slice, coated abrasive working is thick to 0.8mm, be suspended in laboratory room small-sized vacuum heat treatment furnace, 1000 DEG C of insulations 1 hour, vacuum tightness remained on below 10Pa, obtain three-dimensional porous stainless steel, as shown in Figure 1.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (6)
1. the preparation method of a novel porous ferrous alloy, it is characterized in that: in vacuum environment, volatile alloy element in ferrous alloy is volatilized gradually, the porous iron-based alloy of final formation, wherein has a kind of volatile alloy element in starting material ferrous alloy at least, require that the vapour pressure of volatile alloy element is higher than the vapour pressure of matrix element in ferrous alloy, and uniform alloy or sosoloid can be formed with matrix elements.
2. according to the preparation method of ferrous alloy novel porous described in claim 1, it is characterized in that: in starting material ferrous alloy, the atomic percent of volatile alloy element controls between 20%-80%.
3. according to the preparation method of ferrous alloy novel porous described in claim 1, it is characterized in that: in ferrous alloy, volatile alloy element volatilizees under the condition of 200 DEG C of-1200 DEG C of temperature ranges and lasting condition of high vacuum degree.
4., according to the preparation method of the arbitrary described novel porous ferrous alloy of claims 1 to 3, it is characterized in that: described volatile alloy element be manganese, zinc, cadmium, bismuth, barium, calcium, europium, lithium, selenium, magnesium, strontium, antimony, tellurium, thallium, ytterbium one or more.
5. according to the preparation method of ferrous alloy novel porous described in claim 1, it is characterized in that: described volatile alloy element is manganese, its content is 30at.%-60at.%, carries out vacuum demanganize process and obtain porous iron-based alloy at 800 DEG C of-1100 DEG C of temperature.
6. according to a novel porous ferrous alloy prepared by method described in claim 1, it is characterized in that: the pore size distribution of described porous iron-based alloy is 0.1-100 micron.
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| CN201410182792.9A CN105018697A (en) | 2014-04-30 | 2014-04-30 | Preparation method for novel porous iron-base alloy |
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| CN201410182792.9A CN105018697A (en) | 2014-04-30 | 2014-04-30 | Preparation method for novel porous iron-base alloy |
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| CN105018697A true CN105018697A (en) | 2015-11-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108866371A (en) * | 2018-07-25 | 2018-11-23 | 山东大学 | A kind of preparation method of porous aluminum |
| CN109338150A (en) * | 2018-11-08 | 2019-02-15 | 沈阳理工大学 | A kind of porous copper alloy and preparation method thereof |
| CN113118455A (en) * | 2021-04-23 | 2021-07-16 | 吉林大学重庆研究院 | 3D printing method for preparing metal artificial bone based on slurry direct writing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5567336A (en) * | 1978-11-16 | 1980-05-21 | Mitsubishi Heavy Ind Ltd | Preparation of catalyst |
| CN101613813A (en) * | 2009-07-27 | 2009-12-30 | 西南交通大学 | A kind of preparation method of porous iron-based composite powder material |
| CN101817081A (en) * | 2010-04-30 | 2010-09-01 | 西南交通大学 | Method for preparing porous iron-based alloy material |
-
2014
- 2014-04-30 CN CN201410182792.9A patent/CN105018697A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5567336A (en) * | 1978-11-16 | 1980-05-21 | Mitsubishi Heavy Ind Ltd | Preparation of catalyst |
| CN101613813A (en) * | 2009-07-27 | 2009-12-30 | 西南交通大学 | A kind of preparation method of porous iron-based composite powder material |
| CN101817081A (en) * | 2010-04-30 | 2010-09-01 | 西南交通大学 | Method for preparing porous iron-based alloy material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108866371A (en) * | 2018-07-25 | 2018-11-23 | 山东大学 | A kind of preparation method of porous aluminum |
| CN108866371B (en) * | 2018-07-25 | 2019-12-03 | 山东大学 | A kind of preparation method of porous aluminum |
| CN109338150A (en) * | 2018-11-08 | 2019-02-15 | 沈阳理工大学 | A kind of porous copper alloy and preparation method thereof |
| CN113118455A (en) * | 2021-04-23 | 2021-07-16 | 吉林大学重庆研究院 | 3D printing method for preparing metal artificial bone based on slurry direct writing |
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Application publication date: 20151104 |