CN1370848A - Heat-resistant and wear-resistant high temperature oxidation and corrosion resiting silicide alloy - Google Patents
Heat-resistant and wear-resistant high temperature oxidation and corrosion resiting silicide alloy Download PDFInfo
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- CN1370848A CN1370848A CN 01103183 CN01103183A CN1370848A CN 1370848 A CN1370848 A CN 1370848A CN 01103183 CN01103183 CN 01103183 CN 01103183 A CN01103183 A CN 01103183A CN 1370848 A CN1370848 A CN 1370848A
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Abstract
The present invention relates to a heat resistant and wear resistant high temperature oxidation and corrosion resisting silicide alloy. The alloy consists of Si 2-30 wt%, Al 0.2-15 wt%, C 0.2-10 wt%, Cr 2-40 wt%, Ni 2-60 wt% and Fe 2-60 wt% and may contains also Ti 0-50 wt% and/or W 0-70 wt% and/or Mo 0-50 wt%. It is produced through smelting and atomizing with inert gas.
Description
The present invention relates to a kind of silicide alloy, especially a kind of heat-resistant and wear-resistant high temperature oxidation and corrosion resiting silicide alloy.
Need to use at the numerous areas of modern industry increasingly extensively have heat-resisting, high temperature oxidation resisting simultaneously, high temperature resistant (thermal etching) attrition resistant again metallic substance.The metallic substance heat-resisting, high-temperature corrosion resistance that is used for the 650-1000 temperature range at present mainly is a cobalt-base superalloy.Yet cobalt reserves in the world is not rich, costs an arm and a leg.Along with industrial expansions such as modern metallurgy, chemical industry, nuclear energy, automotive industry oil engine manufacturing industries, the demand of cobalt is increased day by day, so develop novel alloy and replace expensive grand strategy cobalt metal in this field, become the task of top priority.
The object of the present invention is to provide a kind of heat resistance wear-resistant high temperature oxidation and corrosion resiting silicide alloy with complex intensifyings such as silicide, carbide.The object of the present invention is achieved like this:
The composition range of alloy of the present invention: Si:2-30%, Al:0.2-15%, C:0.2-10%, Cr:2-40%, Ni:2-60%, Fe:2-60% makes by smelting inert gas atomizer.
Advantage of the present invention and positively effect are:
1. contain higher silicon in this class alloy, all can in alloy, form the silicide of nickel, the silicide and the compound silicide of chromium, its microhardness HV1000-2300 in that as cast condition and plasma spray are as-welded.Giving birth to silicide in this has advantages of higher stability, and through 850 ℃, after the insulation in 32 hours, silicide is stable existence still, so just can guarantee under the hot operation condition alloy to be played enhancement at alloy.
2. the silicon that dissolves in matrix has certain enhancement to alloy substrate, and puies forward the high-carbon activity, promotes carbide to generate, and makes carbide and silicide become main enhancing hard jointly mutually, and hard accounts for more than the 50Vol% in alloy.Add an amount of other alloying element simultaneously, play a part certain improving alloy property.The macrohardness of this class alloy can be at HRC40-60, by service requirements control.
3. Yan Zhi alloy forms by SiO in high-temperature oxidation process
2, Al
2O
3, NiSiO
4, NiCr
2O
4, NiCrO
4Dense oxidation film Deng composite oxides are formed plays effective provide protection to material, and only alloy has high antioxidant property (base superalloy is suitable with boring).
4. Yan Zhi alloy is at 850 ℃ of Na
2SO
4Suitable with cobalt-base alloy preferably anti-molten salt hot corrosion stability is arranged in+NaCl the fused salt.
5. Yan Zhi alloy has plasma spray welding technology performance and liquid sintering technology performance preferably.
6. Yan Zhi alloy is under high temperature, high speed abrasive conditions, shown wear resistance preferably, stand high temperature and high speed (1000-1200 ℃ rod iron with its making, with the high speed of 80m/s by) the guide and guard parts of abrasive action roll on the production line in the high speed line of introducing U.S. Morgen company and use, more than the twice of its work-ing life for existing guide and guard parts.
Embodiments of the invention are:
With containing Si:7-10%, Al:0.5-2%, C:0.8-1.5%, Cr:18-22%, and the nickel-base alloy that contains Fe:13-17% make powdered alloy or are cast as goods by smelting inert gas atomizer,
When using this alloy, adopt surface applied technology (as plasma spray) to prepare the metallurgical coating of silicide at steel material surface.
This alloy also can add Ti:10-50% when smelting, or/and w:10-70%, or/and Mo:10-50% makes alloy, as with the silicide alloy of the siliceous 5-10% of 50-70% and the TiC of 30-50%, with the sintering metal of vacuum sintering or sintering preparation in hydrogen, its hardness reaches more than the HRA85 about 1400 ℃.Perhaps also can add WC or MoC again, make alloy.
Claims (2)
1. heat-resistant and wear-resistant high temperature oxidation and corrosion resiting silicide alloy is characterized in that:
The composition range of this alloy:
Si:2-30%, Al:0.2-15%, C:0.2-10%, Cr:2-40%, and the nickel-base alloy that contains Fe:2-60%.
2. heat-resistant and wear-resistant high temperature oxidation and corrosion resiting silicide alloy according to claim 1 is characterized in that: this alloy is made by smelting inert gas atomizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011031832A CN1141411C (en) | 2001-02-27 | 2001-02-27 | Heat-resistant and wear-resistant high temperature oxidation and corrosion resiting silicide alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011031832A CN1141411C (en) | 2001-02-27 | 2001-02-27 | Heat-resistant and wear-resistant high temperature oxidation and corrosion resiting silicide alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1370848A true CN1370848A (en) | 2002-09-25 |
| CN1141411C CN1141411C (en) | 2004-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011031832A Expired - Fee Related CN1141411C (en) | 2001-02-27 | 2001-02-27 | Heat-resistant and wear-resistant high temperature oxidation and corrosion resiting silicide alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1141411C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158016B (en) * | 2007-11-19 | 2010-06-02 | 北京矿冶研究总院 | Nialwcr powder and preparation method thereof |
| CN102605229A (en) * | 2011-01-21 | 2012-07-25 | 孙晓冰 | Multi-aluminum silicon carbonitride metal ceramic, its preparation method and application |
| CN104975240A (en) * | 2015-07-06 | 2015-10-14 | 无锡阳工机械制造有限公司 | High-strength heatproof heat-proof impeller |
-
2001
- 2001-02-27 CN CNB011031832A patent/CN1141411C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158016B (en) * | 2007-11-19 | 2010-06-02 | 北京矿冶研究总院 | Nialwcr powder and preparation method thereof |
| CN102605229A (en) * | 2011-01-21 | 2012-07-25 | 孙晓冰 | Multi-aluminum silicon carbonitride metal ceramic, its preparation method and application |
| CN104975240A (en) * | 2015-07-06 | 2015-10-14 | 无锡阳工机械制造有限公司 | High-strength heatproof heat-proof impeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1141411C (en) | 2004-03-10 |
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