Method of producing articles by chemical vapor deposition and the support mandrels used therein
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United States of America Patent
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Feb 9, 1999
Issued Date -
N/A
app pub date -
Sep 9, 1993
filing date -
May 1, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method of producing a diamond tube by chemical vapor deposition and a hollow support mandrel used therein. The method comprises depositing a diamond film on an outer side of the hollow mandrel by the CVD process. The mandrel is then etched away by subjecting an inner side of the mandrel to the etching action. It was unexpectedly discovered that the etch time is drastically reduced by using the hollow mandrels.
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Cited Art Landscape
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