Gas-dynamic spraying method for applying a coating
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United States of America Patent
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Apr 12, 1994
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N/A
app pub date -
Feb 2, 1992
filing date -
May 19, 1990
priority date (Note) -
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Abstract
A cold gas-dynamic spraying method for applying a coating to an article introduces into a gas particles of a powder of a metal, alloy, polymer or mechanical mixture of a metal and an alloy, the particles having a particle size of from about 1 to about 50 microns. The gas and particles are formed into a supersonic jet having a temperature considerably below a fusing temperature of the powder material and a velocity of from about 300 to about 1,200 m/sec. The jet is directed against an article of a metal, alloy or dielectric, thereby coating the article with the particles.
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