Method of applying a laser beam creating micro-scale surface structures prior to deposition of film for increased adhesion
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United States of America Patent
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Sep 24, 1996
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N/A
app pub date -
Mar 2, 1994
filing date -
Mar 2, 1994
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Abstract
A method of producing an improved adherent interface between a film or coating and a substrate of metal, ceramic, or composite material by laser treatment of the surface. Semi-periodic microscale surface structures of less than 200 microns in magnitude are made by laser radiation of at least 50 pulses with an energy density of 0.01 to 15 J/cm.sup.2 and a duration of 100 femtoseconds to 1 millisecond on each surface area treated.
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