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US5273570A
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US
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Secondary hardening type high temperature wear-resistant sintered alloy
Assignee: Honda Motor Co Ltd
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Filing: 1992-02-25
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Granted: 1993-12-28
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Expires: 2012-02-25
Abstract
Abstract A secondary hardening type high temperature wear-resistant sintered alloy body comprising 0.4 to 15 wt. % of at least one species of metal carbide forming element which is selected from the group consisting of W, Mo, V, Ti, Nb, Ta and B; 5 to 35 wt. % of at least one species of austenite forming element which is selected from the group consisting of Ni, Co, Cu, and Cr; 0.2 to 1.2 wt. % of C; and 0.04 to 0.2 wt % of the remainder consisting essentially of Fe wherein the alloy body contains an austenite phase which is capable of martensitic transformation.
Inventors
- 👤 Katsuaki Sato
- 👤 Katsuhiko Tominaga
- 👤 Tsutomu Saka
- 👤 Osamu Kawamura
- 👤 Teruo Takahashi
- 👤 Arata Kakiuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:14
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0292; C22C33/0207; C22C33/0228
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
11 words
A secondary hardening type high temperature wear-resistant sintered alloy body, comprising:
Claim 2
Dependent Claim
11 words
A secondary hardening type high temperature wear-resistant sintered alloy body, comprising:
Claim 3
Dependent Claim
93 words
4 to 15 wt. % of at least one species of metal carbide forming element which is selected from the group consisting of W, Mo, V, Ti, Nb, Ta and B; 5 to 35 wt. % of at least one species of austenite forming element which is selected from the group consisting of Ni, Co, Cu, and Cr; 0.2 to 1.2 wt. % of C; and 0.04 to 0.2 wt. % of Al, the remainder consisting essentially of Fe, wherein the alloy body contains an austenite phase which is capable of martensitic transformation.
Claim 4
Dependent Claim
93 words
4 to 15 wt. % of at least one species of metal carbide forming element which is selected from the group consisting of W, Mo, V, Ti, Nb, Ta and B; 5 to 35 wt. % of at least one species of austenite forming element which is selected from the group consisting of Ni, Co, Cu, and Cr; 0.2 to 1.2 wt. % of C; and 0.04 to 0.2 wt. % of Al, the remainder consisting essentially of Fe, wherein the alloy body contains an austenite phase which is capable of martensitic transformation.
Claim 5
Dependent Claim
25 words
The secondary hardening type high temperature wear resistant sintered alloy body of claim 1, further comprising not more than 30 wt. % of hard particles.
Claim 6
Dependent Claim
23 words
The secondary hardening type high temperature wear resistant sintered alloy body of claim 1, further comprising 0.1 to 0.6 wt. % of P.
Claim 7
Dependent Claim
33 words
The secondary hardening type high temperature wear resistant sintered alloy body of claim 1, further comprising 0.1 to 0.6 wt. % of P and not more than 30 wt. % of hard particles.
Claim 8
Dependent Claim
43 words
The secondary hardening type high temperature wear-resistant sintered alloy body of claim 1, further comprising a self-lubricating material deposited at grain boundaries or in grain of the alloy body, said self-lubricating material being present in an amount of 0.2 to 5 wt. %.
Claim 9
Dependent Claim
29 words
The secondary hardening type high temperature wear-resistant sintered alloy body of claim 5, wherein the self-lubricating material is selected from the group consisting of fluoride, sulfide, and lead oxide.
Claim 10
Dependent Claim
52 words
The secondary hardening type high temperature wear resistant sintered alloy body of claim 1, further comprising a sealing agent for sealing pores of the sintered alloy body, said sealing agent comprising at least one species which is selected from the group consisting of Cu, Pb, a Cu alloy, and a Pb alloy.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-27 | 1997-06-28 | 1997-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-27 | 2001-06-28 | 2001-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-27 | 2005-06-28 | 2005-12-28 | $7700.00 | Window Closed / Lapsed |