Method for producing cubic boron nitride using melamine as a catalyst
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United States of America Patent
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Feb 9, 1999
Grant Date -
N/A
app pub date -
May 4, 1998
filing date -
May 4, 1998
priority date (Note) -
Expired
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Abstract
An improved process for converting hexagonal boron nitride (HBN) particles into cubic boron nitride (CBN) in a high pressure/high temperature apparatus (HP/HT) is disclosed. More specifically, by using melamine as a catalyst, operating pressures and temperatures as well as catalyst costs, may all be reduced.
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