Expendable ceramic mandrel
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United States of America Patent
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Jul 13, 1993
Grant Date -
N/A
app pub date -
Nov 17, 1989
filing date -
Nov 17, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Expendable mandrels and methods of using such mandrels for forming voids within materials or surfaces on materials deposited onto the mandrels are described. The mandrels have a coefficient of thermal expansion that substantially matches that of the material to be deposited on the mandrel. Matching coefficients of thermal expansion reduces the likelihood of cracking of the base material when the mandrel and base material are cooled.
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