Patent US4101389A successfully refreshed from Google Patents.
US4101389A
Expired / Lapsed
US
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Method of manufacturing amorphous alloy
Assignee: Sony Corp
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Filing: 1977-05-16
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Granted: 1978-07-18
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Expires: 1997-05-16
Abstract
Abstract A method of manufacturing an amorphous alloy in which there is provided an acidic plating bath consisting predominantly of divalent iron ions and a source of hypophosphite ions, and electroplating from such a bath to produce a plated layer of an amorphous alloy consisting predominantly of iron and phosphorous.
Inventors
- 👤 Satoru Uedaira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:25
CPC Classifications
C; C25; C25C; C25C1/00; C25C1/24; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/562
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
87 words
A method of manufacturing an amorphous plated layer alloy consisting essentially of from 60 to 88 atomic percent iron and from 12 to 30 atomic percent phosphorous and up to 10 atomic percent nickel and/or cobalt comprising providing an acidic aqueous plating bath containing: 1/3 to 5/3 mole/l divalent iron ions 0.07 to 0.42 mole/l hypophosphite ions and effecting the electroplating through the use of said bath under the following conditions: ______________________________________
pH 1.0 to 2.2
Current density 3 to 20A/dm.sup.2
Temperature 30 to 50° C
______________________________________
Claim 2
Independent Claim
87 words
A method of manufacturing an amorphous plated layer alloy consisting essentially of from 60 to 88 atomic percent iron and from 12 to 30 atomic percent phosphorous and up to 10 atomic percent nickel and/or cobalt comprising providing an acidic aqueous plating bath containing: 1/3 to 5/3 mole/l divalent iron ions 0.07 to 0.42 mole/l hypophosphite ions and effecting the electroplating through the use of said bath under the following conditions: ______________________________________
pH 1.0 to 2.2
Current density 3 to 20A/dm.sup.2
Temperature 30 to 50° C
______________________________________
Claim 3
Dependent Claim
22 words
A method according to claim 1 wherein the divalent ferrous ions are derived from ferrous sulfate, ferrous sulfamate, or a mixture thereof.
Claim 4
Dependent Claim
25 words
A method of manufacturing an amorphous alloy according to claim 1 wherein said source of hypophosphite ions is an alkali metal hypophosphite or hypophosphorous acid.
Claim 5
Dependent Claim
25 words
A method according to claim 1 wherein said plating bath further contains divalent cupric ions to produce an amorphous alloy containing iron, phosphorous and copper.
Claim 6
Dependent Claim
24 words
A method according to claim 4 wherein the cupric ions are derived from copper sulfate, copper sulfamate, cupric chloride, or mixtures of these materials.
Claim 7
Dependent Claim
24 words
A method according to claim 5 wherein the amount of divalent copper is from 4 × 10 -5 to 8 × 10 -3 mole/l.
Claim 8
Dependent Claim
21 words
A method according to claim 1 in which the hypophosphite ion is present in an amount of 0.07 to 0.26 mole/l.
Claim 9
Independent Claim
79 words
A method of manufacturing an amorphous plated layer alloy consisting predominantly of iron and phosphorous comprising providing an acidic aqueous plating bath containing: 1/3 to 5/3 mole/l divalent iron ions 0.07 to 0.42 mole/l hypophosphite ions 4 × 10 -5 to 8 × 10 -3 mole/l cupric ions and effecting the electroplating through the use of said plating bath under the following conditions: ______________________________________
pH 1.0 to 2.2
Current density 3 to 20A/dm.sup.2
Temperature 30 to 50° C
______________________________________
Claim 10
Independent Claim
79 words
A method of manufacturing an amorphous plated layer alloy consisting predominantly of iron and phosphorous comprising providing an acidic aqueous plating bath containing: 1/3 to 5/3 mole/l divalent iron ions 0.07 to 0.42 mole/l hypophosphite ions 4 × 10 -5 to 8 × 10 -3 mole/l cupric ions and effecting the electroplating through the use of said plating bath under the following conditions: ______________________________________
pH 1.0 to 2.2
Current density 3 to 20A/dm.sup.2
Temperature 30 to 50° C
______________________________________
Claim 11
Dependent Claim
22 words
A method according to claim 8 wherein the divalent iron ions are derived from ferrous sulfate, ferrous sulfamate, or a mixture thereof.
Claim 12
Dependent Claim
25 words
A method of manufacturing an amorphous alloy according to claim 8 wherein the source of hypophosphite ions is an alkali metal hypophosphite or hypophosphorous acid.
Claim 13
Dependent Claim
21 words
A method according to claim 8 in which the hypophosphite ion is present in an amount of 0.07 to 0.26 mol/liter.
Claim 14
Dependent Claim
25 words
A method according to claim 8 in which said amorphous alloy contains 60 to 88 atomic percent iron and 12 to 30 atomic percent phosphorous.
Claim 15
Dependent Claim
19 words
A method according to claim 2 wherein said amorphous alloy contains up to 10 atomic percent nickel and/or cobalt.
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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |