Coating inspection method
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United States of America Patent
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May 30, 2017
Grant Date -
Oct 15, 2015
app pub date -
Oct 31, 2013
filing date -
Nov 1, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A reflectometry method and other methods for detecting discontinuities in a chemical vapor deposition (CVD) coating are disclosed. The method includes several steps. A thermoplastic vessel wall (710) is provided having an outside surface, an inside surface, and a CVD coating on at least one of the inside and outside surfaces. The vessel wall and the CVD coating have different indices of refraction. Electromagnetic energy (718) is impinged on multiple positions of the CVD coating under conditions effective to cause energy to reflect from the multiple positions of the CVD coating. The reflected energy is analyzed to determine whether the reflected energy includes at least one artifact of a discontinuity in the CVD coating.
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