US3838981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear-resistant power metallurgy nickel-base alloy
Assignee: Stoody Co
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Filing: 1973-03-22
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Granted: 1974-10-01
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Expires: 1993-03-22
Abstract
Abstract A wear- and abrasion-resistant article of sintered metal powder consists of chromium from about 23 percent to about 29 percent, tungsten from about 8 percent to about 15 percent, cobalt from about 8 percent to about 15 percent, molybdenum from about 8 percent to about 15 percent, carbon from about 1.65 percent to about 5 percent, boron up to about 1 percent, manganese up to about 1.3 percent, silicon up to about 1.3 percent, iron from about 10 percent to about 17.5 percent, and the balance nickel in amount at least about 20 percent and incidental impurities.
Inventors
- 👤 E Foley
- 👤 R Polk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:23
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055; C22C1/00; C22C1/04; C22C1/0433; Y; Y10; Y10S; Y10S75/00; Y10S75/95
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
AN ARTICLE OF SINTERED METAL POWDER CONSISTING OF CHROMIUM FROM ABOUT 23 PERCENT, TO ABOUT 29 PERCENT, TUNGSTEN FROM ABOUT 8 PERCENT TO ABOUT 15 PERCENT, COBALT FROM ABOUT 8 PERCENT TO ABOUT 15 PERCENT, MOLYBDENUM FROM ABOUT 8% TO ABOUT 15 PERCENT, CARBON FROM ABOUT 1.65 PERCENT TO ABOUT 5 PERCENT, BORON UP TO ABOUT 1 PERCENT, MANGANASE UP TO ABOUT 1.3 PERCENT, SILICON UP TO ABOUT 1.3 PERCENT, IRON FROM ABOUT 10 PERCENT TO ABOUT 17.5 PERCENT, AND THE BALANCE NICKEL IN AMOUNT AT LEAST ABOUT 20 PERCENT AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
93 words
AN ARTICLE OF SINTERED METAL POWDER CONSISTING OF CHROMIUM FROM ABOUT 23 PERCENT, TO ABOUT 29 PERCENT, TUNGSTEN FROM ABOUT 8 PERCENT TO ABOUT 15 PERCENT, COBALT FROM ABOUT 8 PERCENT TO ABOUT 15 PERCENT, MOLYBDENUM FROM ABOUT 8% TO ABOUT 15 PERCENT, CARBON FROM ABOUT 1.65 PERCENT TO ABOUT 5 PERCENT, BORON UP TO ABOUT 1 PERCENT, MANGANASE UP TO ABOUT 1.3 PERCENT, SILICON UP TO ABOUT 1.3 PERCENT, IRON FROM ABOUT 10 PERCENT TO ABOUT 17.5 PERCENT, AND THE BALANCE NICKEL IN AMOUNT AT LEAST ABOUT 20 PERCENT AND INCIDENTAL IMPURITIES.
Claim 3
Dependent Claim
15 words
The article of claim 1 including boron from about 0.05 percent to about 1 percent.
Claim 4
Dependent Claim
77 words
The article of claim 1 containing chromium from about 25 percent to 27 percent, tungsten from about 9 percent to 11 percent, carbon from about 1.65 percent to about 4.2 percent, silicon up to about 1 percent, manganese up to about 1 percent, boron up to about 1 percent, cobalt from about 9 percent to about 11 percent, molybdenum from about 9 percent to about 11 percent and iron from about 11.5 percent to about 13.5 percent.
Claim 5
Dependent Claim
15 words
The article of claim 3 including boron from about 0.05 percent to about 1 percent.
Claim 6
Dependent Claim
43 words
The article of claim 1 containing chromium about 26 percent, tungsten about 10 percent, carbon about 1.65 percent to 4.2 percent, silicon about 1 percent, manganese about 0.75 percent, boron about 0.5 percent, cobalt about 10%, molybdenum about 10% and iron about 12.5%.
Claim 7
Dependent Claim
30 words
The article of claim 1 including one or more of the elements zirconium, lanthanum, yttrium, vanadium, beryllium, magnesium, and rare-earth metals, in amounts aggregating not more than about 1 percent.
Claim 8
Dependent Claim
27 words
The article of claim 1 including one or more of the elements tantalum, columbium, aluminum, hafnium and copper, in amounts aggregating not more than about 10 percent.
Claim 9
Dependent Claim
23 words
The article of claim 1 in which the metal powder is that resulting from the atomization of a melt of the composition claimed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |