Method for making a composite body coated with one or more layers of inorganic materials including CVD diamond
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United States of America Patent
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Nov 17, 1987
Grant Date -
N/A
app pub date -
Jun 24, 1985
filing date -
Jun 27, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A chemical vapor deposition method for the production of a composite body with one or more polycrystalline diamond layers, essentially free of intercrystalline binder phase, on a substrate of one of: (a) metalbonded hardmaterial compound; (b) ceramic material; or (c) a metal or an alloy, whereby the heated substrate is contacted with a gaseous mixture of hydrocarbon or hydrogen, which mixture has been activated by passing it over a tantalum heater heated to a temperature of 1500.degree.-2500.degree. C. Also disclosed is the use of the compound body in tools subjected to mechanical operations.
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