Diamond-on-a-substrate for electronic applications
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United States of America Patent
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Jun 30, 1992
Issued Date -
N/A
app pub date -
Sep 6, 1990
filing date -
Mar 20, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coated substrate product is disclosed which comprises a substrate and a polycrystalline diamond layer having a smooth surface finish, enhanced crystal orientation in comparison to industrial grade diamond powder particularly in the (220) and (400) directions, and excellent electrical and thermal properties. Also disclosed is a method for fabricating such a coated substrate in which the polycrystalline diamond layer is chemically vapor deposited onto the substrate at substrate temperatures in the range of 650.degree. to 825.degree. C.
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