Alloys or metallic compositions – Copper base – Tin containing
Patent
1985-05-24
1986-07-22
O'Keefe, Veronica
Alloys or metallic compositions
Copper base
Tin containing
420488, 420492, 148412, 148414, 148 115C, 148 127C, 148160, 428620, C22F 108
Patent
active
046018794
ABSTRACT:
A copper-nickel-tin-titanium-alloy suitable for use as a base material for semiconductors includes, by weight, 0.25 to 3.0% nickel, 0.25 to 3.0% tin, and 0.12 to 1.5% titanium, the remainder being copper and common impurities. An alternative form of the inventive alloy includes, by weight, 0.25 to 3.0% nickel, 0.25 to 3.0% tin, 0.12 to 1.5% titanium, and 0.05 to 0.45% chrome, the remainder being copper and common impurities. A method for making these alloys includes the steps of homogenizing the alloy at temperatures of 850.degree. to 950.degree. C. between 1 and 24 hours, hot-rolling the alloy at temperatures of 600.degree. to 800.degree. C. in one or more passes, and cooling the alloy to room temperature with a cooling speed of between 10.degree. C. per minute and 2000.degree. C. per minute.
REFERENCES:
patent: 3421888 (1969-01-01), Saarivirta
patent: 4046596 (1977-09-01), Metcalfe
patent: 4337089 (1982-06-01), Arita et al.
patent: 4366117 (1982-12-01), Tsuji
Durrschnabel Wolfgang
Puckert Franz J.
Steeb Jorg
Stuer Heinrich
O'Keefe Veronica
Wieland-Werke AG
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