Chromate-free coating for metal honeycomb
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United States of America Patent
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-
Feb 3, 2004
Grant Date -
Jul 31, 2003
app pub date -
Jan 31, 2002
filing date -
Jan 31, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coating for metal sheets used in fabricating honeycomb structures. The coating includes a first layer located on the surface of the metal sheet. The first layer includes hydrated alumina dispersed in a binder. The coating may further include a second layer located on top of the first layer. The second layer includes a polymer sealant. The first and second layer form a coating which is corrosion resistant and bonds well to the node adhesives used in forming honeycomb structures.
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