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US3986867A
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Iron-chromium series amorphous alloys
Assignee: Nippon Steel Corp
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Filing: 1975-01-13
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Granted: 1976-10-19
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Expires: 1995-01-13
Abstract
Abstract Iron-chromium series amorphous alloys having excellent mechanical properties, high heat resistance and corrosion resistance consisting essentially of 1-40 atomic % of chromium, 7-35 atomic % of at least one of carbon, boron and phosphorus and the remainder being iron. In said amorphous alloys, a part of the content of iron may be substituted with at least one sub-component selected from the group consisting of nickel, cobalt, molybdenum, zirconium, titanium, manganese, vanadium, niobium, tungsten, tantalum and copper.
Inventors
- 👤 Tsuyoshi Masumoto
- 👤 Masaaki Naka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:47
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/02; B22D13/026; C; C22; C22C; C22C33/00; C22C33/003; C22C45/00; C22C45/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
46 words
Iron-chromium completely amorphous alloys having excellent mechanical properties, high heat resistance and corrosion resistance, consisting essentially of 1-40 atomic % of chromium, 7-35 atomic % of at least one of elements selected from the group consisting of carbon, boron and phosphorus and the remainder being iron.
Claim 2
Dependent Claim
46 words
Iron-chromium completely amorphous alloys having excellent mechanical properties, high heat resistance and corrosion resistance, consisting essentially of 1-40 atomic % of chromium, 7-35 atomic % of at least one of elements selected from the group consisting of carbon, boron and phosphorus and the remainder being iron.
Claim 3
Dependent Claim
60 words
Iron-chromium completely amorphous alloys having excellent mechanical properties, high heat resistance and corrosion resistance, consisting essentially of 1-40 atomic % of chromium, 2-30 atomic % of at least one of carbon and boron, 5-33 atomic % of phosphorus, the total amount of phosphorous and at least one of carbon and boron, being 7-35 atomic % and the remainder being iron.
Claim 4
Dependent Claim
60 words
Iron-chromium completely amorphous alloys having excellent mechanical properties, high heat resistance and corrosion resistance, consisting essentially of 1-40 atomic % of chromium, 2-30 atomic % of at least one of carbon and boron, 5-33 atomic % of phosphorus, the total amount of phosphorous and at least one of carbon and boron, being 7-35 atomic % and the remainder being iron.
Claim 5
Dependent Claim
27 words
Iron-chromium amorphous alloys as claimed in claim 1, wherein said amorphous alloys additionally contain less than 40 atomic % of at least one of nickel and cobalt.
Claim 6
Dependent Claim
29 words
Iron-chromium amorphous alloys as claimed in claim 1, wherein said amorphous alloys additionally contain less than 20 atomic % of at least one of molybdenum, zirconium, titanium and manganese.
Claim 7
Dependent Claim
30 words
Iron-chromium amorphous alloys as claimed in claim 1, wherein said amorphous alloys additionally contain less than 10 atomic % of at least one of vanadium, niobium, tungsten, tantalum and copper.
Claim 8
Dependent Claim
27 words
Iron-chromium amorphous alloys as claimed in claim 2, wherein said amorphous alloys additionally contain less than 40 atomic % of at least one of nickel and cobalt.
Claim 9
Dependent Claim
29 words
Iron-chromium amorphous alloys as claimed in claim 2, wherein said amorphous alloys additionally contain less than 20 atomic % of at least one of molybdenum, zirconium, titanium and manganese.
Claim 10
Dependent Claim
30 words
Iron-chromium amorphous alloys as claimed in claim 2, wherein said amorphous alloys additionally contain less than 10 atomic % of at least one of vanadium, niobium, tungsten, tantalum and copper.
Claim 11
Dependent Claim
25 words
The iron-chromium amorphous alloys as claimed in claim 1, wherein the amount of at least one of carbon, boron and phosphorous is 15-25 atomic %.
Claim 12
Dependent Claim
33 words
The iron-chromium amorphous alloys as claimed in claim 2, wherein the amount of at least one of carbon and boron is 5-10 atomic % and the amount of phosphorus is 8-15 atomic %.
Claim 13
Dependent Claim
93 words
Iron-chromium amorphous alloys as claimed in claim 1, wherein said amorphous alloys additionally contain at least one of sub-component selected from the group consisting of nickel, cobalt, molybdenum, zirconium, titanium, manganese, vanadium, niobium, tungsten, tantalum and copper, provided that the content of at least one of nickel and cobalt being less than 40 atomic %, the content of at least one of molybdenum, zirconium, titanium and manganese being less than 20 atomic % and the content of at least one of vanadium, niobium, tungsten, tantalum and copper being less than 10 atomic %.
References Cited (Backward Citations)
US3871836A
Cited
US3856513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |