Detection of imperfections in the inert coating of a rotating metal component
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United States of America Patent
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Jun 2, 1992
Grant Date -
N/A
app pub date -
Aug 23, 1990
filing date -
Aug 25, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for testing, in situ, for imperfections in an inert coating of a moving metal component of an apparatus (e.g. a metal basket of a centrifuge) involves covering the inert coating with an electrically conductive liquid, applying an electrical voltage across the inert coating while the apparatus is operational, monitoring the current or applied voltage, and utilizing the measured current or voltge to provide an indication of the condition of the inert coating. If the coating is defective, the conductive liquid will find its way into any flaws or imperfections, thereby providing a path of lower electrical resistance.
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