Enhanced adherence of diamond coatings
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United States of America Patent
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Feb 13, 1996
Issued Date -
N/A
app pub date -
Apr 18, 1995
filing date -
May 21, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention is directed to the creation of diamond coatings with enhanced adherence on substrates, such as tungsten carbide-cobalt (WC--Co), by chemical vapor deposition. This process comprises the steps of creating a combustion flame, supplying a deposition promoter to the flame, positioning a substrate into the flame, and forming the diamond deposit with enhanced adherence on the substrate. The invention is also directed to methods for the formation of a diamond deposit with enhanced adherence by the addition of a high-temperature binder such as a refractory metal or an organometallic compound. Once incorporated, the high-temperature binder acts as a cement which increase the strength and adhesion of the coating to the substrate.
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