Non-chromate metal surface etching solutions
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United States of America Patent
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Mar 16, 2004
Grant Date -
Nov 13, 2003
app pub date -
May 7, 2002
filing date -
May 7, 2002
priority date (Note) -
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Abstract
Non-chromate solutions for treating and/or etching metals, particularly, aluminum, aluminum alloys, steel and titanium, and method of applying same wherein the solutions include either a titanate or titanium dioxide as a 'drop-in replacement' for a chromium-containing compound in a metal surface etching solution that otherwise would contain chromium.
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