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US3937858A
Expired / Lapsed
US
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Method of and bath for the plating of aluminum or an aluminum alloy on a metallic substrate
Assignee: GEA Group AG
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Filing: 1974-02-13
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Granted: 1976-02-10
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Expires: 1994-02-13
Abstract
Abstract Aluminum or an aluminum alloy is plated on a metallic substrate from a bath of molten aluminum or aluminum alloy containing 0.005 to 1.0% (preferably 0.01 to 0.5%) strontium and/or 0.01 to 5.0% antimony. The metal substrate is preferably iron, steel, or a noniron metal such as copper, titanium, nickel, cobalt, chromium, tantalum, tungsten, vanadium or zirconium. The bath may also contain 1.0 to 15.0% by weight silicon and 0.005 to 1.0% beryllium.
Inventors
- 👤 Wolfgang Thiele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:45
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
62 words
A hot dip method of producing an aluminum-alloy coating comprising the steps of immersing a metallic substrate into a bath of molten aluminum-alloy consisting essentially of 0.005 to 1.0% by weight of strontium and/or 0.01 to 5.0% by weight antimony balance aluminum and metallic impurities due to the producing process, for a period sufficient to deposit an aluminum-alloy coating on said substrate.
Claim 2
Dependent Claim
62 words
A hot dip method of producing an aluminum-alloy coating comprising the steps of immersing a metallic substrate into a bath of molten aluminum-alloy consisting essentially of 0.005 to 1.0% by weight of strontium and/or 0.01 to 5.0% by weight antimony balance aluminum and metallic impurities due to the producing process, for a period sufficient to deposit an aluminum-alloy coating on said substrate.
Claim 3
Dependent Claim
16 words
The method defined in claim 1 wherein said bath contains 1.0 to 15% by weight silicon.
Claim 4
Dependent Claim
16 words
The method defined in claim 1 wherein said bath contains 0.1 to 0.05% by weight strontium.
Claim 5
Dependent Claim
42 words
The method defined in claim 1 wherein said substrate consists of ferrous metal or a metal selected from the group which consists of copper, titanium, nickel, cobalt, chromium, tantalum, tungsten, vanadium and zirconium and alloys thereof with eah other and with iron.
Claim 6
Dependent Claim
36 words
The method as defined in claim 1 wherein said substrate is immersed in said bath for a period ranging from 5 seconds to 3 minutes and said bath is at a temperature of 600° to 850°C.
Claim 7
Dependent Claim
34 words
The method defined in claim 1 wherein said substrate is immersed in said bath for a period ranging from 15 to 60 seconds and said bath is at a temperature of 600° to 850°C.
Claim 8
Independent Claim
64 words
A method of producing an aluminum or aluminum-alloy coating comprising the steps of immersing a metallic substrate into a bath of molten aluminum or aluminum-alloy consisting essentially of: 0.005% to 1.0% Sr by weight, and/or 0.01% to 5.0% Sb up to 15% Si up to 1% Be; and balance aluminum, for a period sufficient to deposit an aluminum or aluminum-alloy coating on said substrate.
Claim 9
Independent Claim
64 words
A method of producing an aluminum or aluminum-alloy coating comprising the steps of immersing a metallic substrate into a bath of molten aluminum or aluminum-alloy consisting essentially of: 0.005% to 1.0% Sr by weight, and/or 0.01% to 5.0% Sb up to 15% Si up to 1% Be; and balance aluminum, for a period sufficient to deposit an aluminum or aluminum-alloy coating on said substrate.
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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |