Fluoride cleaning of metal surfaces and product
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 20, 1994
Grant Date -
N/A
app pub date -
Nov 4, 1992
filing date -
Nov 4, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of cleaning a metal surface includes covering the portion of the metal surface with a cleaning tape. The cleaning tape is chromium in combination with a fluoride ion source bound together by fibrillated polytetrafluoroethylene. This is applied to the portion of the area to be cleaned and is subject to heat treatment at about 1800.degree. F. and a reducing atmosphere of preferably hydrogen. This effectively cleans only the area covered by the tape. Further, the tape and binder format acts to force fluoride ions into the cracks on the surface providing a significantly improved cleaning operation.
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