US3644153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasion-resistant materials and certain alloys therefore
Assignee: Surface Technology Corp
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Filing: 1970-01-28
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Granted: 1972-02-22
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Expires: 1990-01-28
Abstract
Abstract A novel group of alloys consisting essentially of: A. columbium and/or tantalum and/or vanadium; B. titanium and/or zirconium; C. chromium and/or manganese and/or rhenium; and optionally, D. molybdenum and/or tungsten Such alloys illustrate utility in themselves and when nitrided as hereinafter taught are characterized by excellent wear and abrasion resistance and show considerable utility, for example, as cutting tool materials.
Inventors
- 👤 John J Rausch
- 👤 Ray J Van Thyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:44
CPC Classifications
C; C22; C22C; C22C27/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
48 words
The material as defined in claim 1 wherein the nitrogen pickup thereof is at least 1 milligram per square centimeter of surface area, the surface microhardness is at least 1,000 diamond pyramid numerals and the reaction depth to which such hardness is developed is at least 0.5 mil.
Claim 2
Dependent Claim
29 words
The material as defined in claim 1 consisting essentially of from 30 to 85 percent vanadium, from 2 to 45 percent chromium, and from 5 to 50 percent titanium.
Claim 3
Dependent Claim
29 words
The material as defined in claim 1 consisting essentially of from 30 to 85 percent vandium, from 2 to 45 percent chromium, and from 5 to 50 percent zirconium.
Claim 4
Dependent Claim
29 words
The material as defined in claim 1 consisting essentially of from 30 to 85 percent columbium, from 2 to 20 percent chromium, and from 5 to 50 percent titanium.
Claim 5
Dependent Claim
29 words
The material as defined in Claim 1 consisting essentially of from 30 to 85 percent columbium, from 2 to 20 percent chromium, and from 5 to 50 percent zirconium.
Claim 6
Dependent Claim
29 words
The material as defined in claim 1 consisting essentially of from 30 to 85 percent columbium, from 2 to 50 percent rhenium and from 5 to 50 percent titanium.
Claim 7
Dependent Claim
29 words
The material as defined in claim 1 consisting essentially of from 30 to 85 percent tantalum, form 2 to 50 percent rhenium, and from 5 to 35 percent titanium.
Claim 8
Dependent Claim
59 words
The material as defined in claim 1 consisting essentially of: a. from 5 to 50 percent titanium, b. from 2 to 50 percent content of total rhenium plus a metal selected from the group consisting of tungsten and molybdenum and mixtures thereof wherein therein there is at least 2 percent rhenium; and c. from 30 to 85 percent columbium.
Claim 9
Dependent Claim
59 words
The material as defined in claim 1 consisting essentially of: a. from 5 to 35 percent titanium, b. from 2 to 50 percent content of tOtal rhenium plus a metal selected from the group consisting of tungsten and molybdenum and mixtures thereof wherein therein there is at least 2 percent rhenium; and c. from 30 to 85 percent tantalum.
Claim 10
Dependent Claim
59 words
The material as defined in claim 1 consisting essentially of: a. from 5 to 50 percent titanium; b. from 2 to 20 percent chromium; c. wherein the total content of chromium plus a metal selected from the group consisting of molybdenum, tungsten and mixtures thereof ranges from 2 to 50 percent, and d. from 30 to 85 percent columbium.
Claim 11
Dependent Claim
59 words
The material as defined in claim 1 consisting essentially of: a. from 5 to 50 percent titanium; b. from 2 to 45 percent chromium; c. wherein the total content of chromium plus a metal selected from the group consisting of molybdenum, tungsten and mixtures thereof ranges from 2 to 50 percent, and d. from 30 to 85 percent vanadium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |