Method for manufacturing diamond coatings
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United States of America Patent
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Oct 10, 2006
Grant Date -
May 26, 2005
app pub date -
Nov 25, 2003
filing date -
Nov 25, 2003
priority date (Note) -
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Abstract
A method of manufacturing diamond coatings, at low temperature and low pressure on a substrate utilizing chemical vapor transport (CVT) comprising the steps of: providing a wire-wrapped graphite assembly component and the substrate into a chamber; filling the chamber with hydrogen; reducing ambient pressure in the chamber to a vacuum and backfilling with hydrogen; sealing the chamber containing hydrogen at a pressure less than 1 atmosphere; and passing electric current through the graphite rod until the substrate is heated within a range of 125.degree. C. 750.degree. C. to produce high-quality diamond at temperatures with exceptional properties.
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