Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1993-03-04
1995-01-10
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428641, 2281231, 2281241, B23K 120, H01L 2314
Patent
active
053805984
ABSTRACT:
A joint for joining a silicon disc (21) to a molybdenum disc (22) comprises a layer of titanium silicide (20) and a layer of aluminium-silicon solder (23). The titanium silicide is formed by depositing a layer of titanium on the silicon disc and heating the silicon disc and the titanium to around 550.degree. C. to encourage the formation of titanium silicide. A solder disc is then compressed between the silicon and molybdenum discs at about 690.degree. C. to fuse the solder to the titanium silicide layer and the molybdenum disc. The layer of titanium silicide protects the silicon disc from dissolution during soldering, so that diffused-in features in the silicon are not damaged.
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Chan Stephen
Ferrando Carlo
Westinghouse Brake & Signal Holdings Ltd.
Zimmerman John
LandOfFree
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