US3715792A
Expired / Lapsed
US
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Powder metallurgy sintered corrosion and wear resistant high chromium refractory carbide alloy
Assignee: Chromalloy Gas Turbine Corp
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Filing: 1970-10-21
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Granted: 1973-02-13
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Expires: 1990-10-21
Abstract
Abstract A corrosion and wear resistant high chromium refractory carbide alloy is provided by powder metallurgy suitable for use as a seaming tool in the food canning industry comprising primary carbide grains of at least one refractory carbide selected from the group consisting of TiC, CbC, VC and TaC dispersed through a high chromium alloy matrix consisting essentially by weight of about 14 to 24 percent chromium, about 0.4 to 1.2 percent carbon, up to about 3 percent nickel, up to about 5 percent molybdenum, and the balance essentially iron.
Inventors
- 👤 A Prill
- 👤 S Tarkan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:53
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0292; C22C38/00; C22C38/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
89 words
A powder metallurgy sintered corrosion and wear resistant high chromium refractory carbide alloy comprising about 30 to 75 percent by volume of primary grains of at least one refractory carbide selected from the group consisting of TiC, CbC, VC and TaC dispersed through a high chromium alloy matrix making up the balance, said alloy matrix consisting essentially by weight of about 14 to 24 percent chromium, about 0.4 to 1.2 percent carbon, up to about 3 percent nickel, up to about 5 percent molybdenum, and the balance essentially iron.
Claim 2
Dependent Claim
89 words
A powder metallurgy sintered corrosion and wear resistant high chromium refractory carbide alloy comprising about 30 to 75 percent by volume of primary grains of at least one refractory carbide selected from the group consisting of TiC, CbC, VC and TaC dispersed through a high chromium alloy matrix making up the balance, said alloy matrix consisting essentially by weight of about 14 to 24 percent chromium, about 0.4 to 1.2 percent carbon, up to about 3 percent nickel, up to about 5 percent molybdenum, and the balance essentially iron.
Claim 3
Dependent Claim
60 words
The sintered corrosion and wear resistant high chromium refractory carbide alloy of claim 1, wherein the refractory carbide ranges by volume from about 35 to 55 percent TiC, and wherein the matrix alloy making up substantially the balance consists essentially by weight of about 16 to 20 percent chromium, about 0.5 to 0.9 percent carbon, and the balance essentially iron.
Claim 4
Dependent Claim
97 words
A hardened sintered corrosion and wear resistant tool element formed of a high chromium refractory carbide alloy comprising about 30 to 75 percent by volume of primary grains of at least one refractory carbide selected from the group consisting of TiC, CbC, VC and TaC dispersed through a high chromium alloy matrix consisting essentially by weight of about 14 to 24 percent chromium, up to about 3 percent nickel, up to about 5 percent molybdenum, about 0.4 to 1.2 percent carbon and the balance essentially iron, the metallographic structure of the alloy matrix consisting essentially of martensite.
Claim 5
Dependent Claim
97 words
A hardened sintered corrosion and wear resistant tool element formed of a high chromium refractory carbide alloy comprising about 30 to 75 percent by volume of primary grains of at least one refractory carbide selected from the group consisting of TiC, CbC, VC and TaC dispersed through a high chromium alloy matrix consisting essentially by weight of about 14 to 24 percent chromium, up to about 3 percent nickel, up to about 5 percent molybdenum, about 0.4 to 1.2 percent carbon and the balance essentially iron, the metallographic structure of the alloy matrix consisting essentially of martensite.
References Cited (Backward Citations)
US2369211A
Cited
US2450888A
Cited
US2714245A
Cited
US2828202A
Cited
US2944893A
Cited
US3053706A
Cited
US3380861A
Cited
US3442101A
Cited
US3369892A
Cited
US3369891A
Cited
US3416976A
Cited
US3561934A
Cited
US3450511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |