Metal fusion bonding – Process – Metal to nonmetal with separate metallic filler
Reexamination Certificate
2005-05-10
2005-05-10
Silverman, Stanley S. (Department: 1754)
Metal fusion bonding
Process
Metal to nonmetal with separate metallic filler
C228S200000, C228S253000
Reexamination Certificate
active
06889890
ABSTRACT:
When a diamond is brazed to a metal substrate, while obtaining a stable joining strength, a joined interface of the diamond is not eroded to provide a good joint with a beautiful view. A brazing-filler material containing at least one selected from a group consisting of gold and silver, and copper as principal components, and further containing 0.001 to 5 mass % of vanadium is used. Preferably, a vanadium content is not more than 2.0 mass %, and more preferably not more than 0.5 mass %. Using this brazing-filler material, unidirectional solidification is performed from a side of diamond to form vanadium carbide in a joined interface in a shape of islands, and thereby an interface having a beautiful view with stable joining strength can be obtained. In addition, strong joining is possible also by a usual solidification method.
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Suzumura Akio
Yamazaki Takahisa
Cooke Colleen P.
Hohoemi Brains, Inc.
McGlew and Tuttle , P.C.
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