CN1260385C - Silicide alloy-titanium carbide cermet - Google Patents
Silicide alloy-titanium carbide cermet Download PDFInfo
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- CN1260385C CN1260385C CN 02153908 CN02153908A CN1260385C CN 1260385 C CN1260385 C CN 1260385C CN 02153908 CN02153908 CN 02153908 CN 02153908 A CN02153908 A CN 02153908A CN 1260385 C CN1260385 C CN 1260385C
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- China
- Prior art keywords
- titanium carbide
- silicide alloy
- silicide
- alloy
- powder
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Abstract
The present invention relates to silicide alloy, namely titanium carbide metal ceramics which are produced by compounding a novel silicide alloy as a sintering phase with titanium carbide. The silicide alloy and titanium carbide metal ceramics contain the components: 20 to 70 wt% of silicide alloy powder and 30 to 80 wt% of titanium carbide powder, wherein the silicide alloy contains the chemical components: 10 to 80 wt% of Ni, 10 to 70 wt% of Fe, 2 to 40 wt% of Si, 3 to 40 wt% of Cr, 0 to 3 wt% of C, 0.05 to 10 wt% of Al and 0 to 10 wt% of rare-earth element (Re). Silicide pre-alloyed powder is not easily oxidized, so the silicide pre-alloyed powder is conveniently produced and managed. The performance of high temperature oxidation resistance and molten salt hot corrosion resistance of the silicide alloy and titanium carbide metal ceramics is higher than that of the existing titanium carbide metal ceramics. Thus, the present invention can simultaneously meet the requirements for high hardness, high abrasive resistance, high temperature oxidation resistance and molten salt hot corrosion resistance of materials in the modern industrial science and technology.
Description
Technical field
The invention belongs to the high-performance new material technology field, particularly a kind of silicide alloy-titanium carbide ceramic.
Background technology
This invention be silicide alloy-titanium carbide ceramic, this is the sintering metal of a class with silicide alloy and the compound formation of titanium carbide.Mostly existing sintering metal is with Ni-Mo, Ni-Fe-Mo, Ni-Mo
2C, Ni-W, Ni-WC, or add other carbide forming elements, as Nb, Hf, or their carbide and metallic nickel or ferronickel are together as the compound sintering metal of making of sintering and titanium carbide.The anti-molten salt hot corrosion performance of high temperature oxidation resisting of existing titanium carbide ceramic can not satisfy modern science and technology and industry has more high rigidity, more high-wearing feature, a demand of the anti-molten salt hot corrosion material of high temperature oxidation resisting more in machinery, metallurgy, the energy, power, field of petrochemical industry.
Summary of the invention
The purpose of this invention is to provide a kind of silicide alloy-titanium carbide ceramic, reaching performance has the anti-molten salt hot corrosion performance of higher high temperature oxidation resisting than existing titanium carbide ceramic.Can satisfy modern science and technology and industry to having the hard high-wearing feature demand of the anti-molten salt hot corrosion material of high temperature oxidation resisting again simultaneously.
Content of the present invention is: a kind of silicide alloy-titanium carbide ceramic is characterized in that: the design of this material: with a kind of novel silicide alloy is sintering and the compound sintering metal of making of titanium carbide; Material composition: the composition of silicide alloy-titanium carbide ceramic, in the percentage ratio of quality: silicide alloy powder: 20-70%, carbonized titanium powder: 30-80%; Wherein silicide alloy is a class in-situ endogenic intermetallic compound-silicide-ni-fe-based alloy; Its as-cast microstructure constitutional features is to be distributed with M on the Rhometal matrix
3Si, M can be Ni or elements such as Cr or Fe, M '
22Si
7(M ' can be elements such as Ni or Cr), M "
7C
3With M
23C
6Carbide and Ni
3Al; The chemical ingredients mass percent scope of silicide alloy is: Ni:10-80%, Fe:10-70%, Si:2-40%, Cr:3-40%, C≤3%, Al:0.05-10%, RE rare earth element: 0-10%.
The content of each element and titanium carbide is in silicide alloy-titanium carbide ceramic: Ni:4-50%, Fe:2-40%, Si:0.5-30%, Cr:0.4-30%, Al:0.05-7%, RE rare earth element: 0-6%, titanium carbide or titanium carbide and titanium nitride: 30-80%.
The silicide alloy powder is by above material mixture ratio, is prefabricated into through the melting inert gas atomizer; And then the silicide alloy powder mixed with carbonized titanium powder, ball milling is granulated, compression molding, and dewaxing, vacuum sintering, its condition is temperature 1370-1450 ℃, time 30-60min can make silicide alloy-titanium carbide ceramic.
Characteristics of the present invention are: it uses several pure metal powder to cooperate with titanium carbide to make titanium carbide ceramic different with existing technology.Another technical characterictic of this invention is being the compound preparation sintering metal of raw material and titanium carbide by material design proportioning raw material through the prefabricated silicide alloy powder of melting inert gas atomizer.Sintering metal in the past is a raw material with the pure metal powder, the easy oxidation of pure metal powder, and bad preservation makes troubles to production.Silicide prealloy powder is difficult for oxidation, is convenient to production management.The performance of silicide alloy-titanium carbide ceramic has the anti-molten salt hot corrosion performance of higher high temperature oxidation resisting than existing titanium carbide ceramic.Can satisfy modern science and technology and industry to having the hard high-wearing feature demand of the anti-molten salt hot corrosion material of high temperature oxidation resisting again simultaneously.
Specific embodiment
The present invention is to be sintering and the compound sintering metal of making of titanium carbide with novel silicide alloy.
Wherein the chemical ingredients mass percent scope of silicide alloy is: Ni:10-80%, Fe:10-70%, Si:2-40%, Cr:3-40%, C≤3%, Al:0.05-10%, RE (rare earth element): 0-10%.Do not contain expensive rare element.
Silicide alloy is a class in-situ endogenic intermetallic compound (being a silicide here) ni-fe-based alloy.Its as-cast microstructure constitutional features is to be distributed with M on the Rhometal matrix
3Si (M can be Ni or elements such as Cr or Fe, as: Ni
3Si, Cr
3Si etc.), M '
22Si
7(M ' can be elements such as Ni or Cr), M "
7C
3With M
23C
6Carbide and Ni
3Al.
Use several pure metal powder to cooperate to make titanium carbide ceramic different with existing technology with titanium carbide.Another technical characterictic of this invention is being the compound preparation sintering metal of raw material and titanium carbide by material design proportioning raw material through the prefabricated silicide alloy powder of melting inert gas atomizer.The easy oxidation of pure metal powder, bad preservation makes troubles to production.Silicide prealloy powder is difficult for oxidation, is convenient to production management.
The composition of silicide alloy-titanium carbide ceramic (mass percent): silicide alloy powder: 20-70%, carbonized titanium powder: 30-80%.Like this, the content of each element and titanium carbide is in this silicide alloy-titanium carbide ceramic: Ni:4-50%, Fe:2-40%, Si:0.5-30%, Cr:0.4-30%, Al0.05-7%, RE (rare earth element): 0-6%, titanium carbide or titanium carbide and titanium nitride: 30-80%.
The preparation of silicide alloy-titanium carbide ceramic: press material and form the design proportioning with the silicide alloy powder, carbonized titanium powder mixes, ball milling, granulate compression molding, dewaxing, vacuum sintering (1370-1450 ℃ 30-60min), can make silicide alloy-titanium carbide ceramic.
The performance of silicide alloy-titanium carbide ceramic: silicide alloy has wetting preferably sintering to titanium carbide, obtains fine and close silicide alloy-titanium carbide ceramic.With material composition prescription and technology, the hardness of material is in the HRA80-92 scope, bending strength 1000-1600MPa, and the density of dense material (proportion) is at 5.7-6.1g/cm
3This silicide alloy-titanium carbide ceramic forms SiO on its surface in high-temperature oxidation process
2, Cr
2O
3, TiO
2, and the spinelle type composite oxides oxide film, than existing sintering metal higher oxidation resistent susceptibility is arranged.And high anti-fused salt (as: 850 ℃ of Na are arranged
2SO
4-NaCl fused salt) corrosive nature.
On the preparation method, use several pure metal powder to cooperate to make titanium carbide ceramic different with titanium carbide with existing technology.Another technical characterictic of this invention is being the compound preparation sintering metal of raw material and titanium carbide by material design proportioning raw material through the prefabricated silicide alloy powder of melting-inert gas atomizer.The easy oxidation of pure metal powder, bad preservation makes troubles to production.Silicide prealloy powder is difficult for oxidation, is convenient to production management.
Claims (3)
1, a kind of silicide alloy-titanium carbide ceramic is characterized in that: the design of this material: with a kind of novel silicide alloy is sintering and the compound sintering metal of making of titanium carbide; Material composition: the composition of silicide alloy-titanium carbide ceramic, in the percentage ratio of quality: silicide alloy powder: 20-70%, carbonized titanium powder: 30-80%; Wherein silicide alloy is a class in-situ endogenic intermetallic compound-silicide-ni-fe-based alloy; Its as-cast microstructure constitutional features is to be distributed with M on the Rhometal matrix
3Si, M are Ni or Cr or Fe element, M '
22Si
7, M ' is element Ni or Cr, M "
7C
3With M
23C
6Carbide and Ni
3Al; The chemical ingredients mass percent scope of silicide alloy is: Ni:10-80%, Fe:10-70%, Si:2-40%, Cr:3-40%, C≤3%, Al:0.05-10%, RE rare earth element: 0-10%.
2, silicide alloy-titanium carbide ceramic according to claim 1, it is characterized in that: the content of each element and titanium carbide is: Ni:4-50%, Fe:2-40%, Si:0.5-30%, Cr:0.4-30%, Al:0.05-7%, RE rare earth element: 0-6%, titanium carbide or titanium carbide and titanium nitride: 30-80%.
3, silicide alloy-titanium carbide ceramic according to claim 1 and 2 is characterized in that: the silicide alloy powder is by above composition proportion, is prefabricated into through the melting inert gas atomizer; And then the silicide alloy powder mixed with carbonized titanium powder, ball milling is granulated, compression molding, and vacuum sintering can make silicide alloy-titanium carbide ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02153908 CN1260385C (en) | 2002-12-05 | 2002-12-05 | Silicide alloy-titanium carbide cermet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02153908 CN1260385C (en) | 2002-12-05 | 2002-12-05 | Silicide alloy-titanium carbide cermet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1504586A CN1504586A (en) | 2004-06-16 |
| CN1260385C true CN1260385C (en) | 2006-06-21 |
Family
ID=34235354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02153908 Expired - Fee Related CN1260385C (en) | 2002-12-05 | 2002-12-05 | Silicide alloy-titanium carbide cermet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1260385C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484661C (en) * | 2006-08-16 | 2009-05-06 | 山东大学 | Molybdenum base cermet containing SiC, Fe, C and Cr |
| BE1018129A3 (en) * | 2008-09-19 | 2010-05-04 | Magotteaux Int | COMPOSITE IMPACTOR FOR PERCUSSION CRUSHERS. |
| CN102650011A (en) * | 2011-02-28 | 2012-08-29 | 孙晓冰 | Heat, wear and hot corrosion-resistant silicide reinforced high wolframium-nickel-iron-based alloy |
| CN110819875B (en) * | 2019-09-24 | 2021-05-28 | 西安交通大学 | Fe2B block wear-resistant material and toughening method thereof |
-
2002
- 2002-12-05 CN CN 02153908 patent/CN1260385C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1504586A (en) | 2004-06-16 |
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