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.
Type:
Grant
Filed:
February 2, 1992
Date of Patent:
April 12, 1994
Assignee:
Anatoly Nikiforovich Papyrin
Inventors:
Anatoly P. Alkhimov, Anatoly N. Papyrin, Vladimir F. Kosarev, Nikolai I. Nesterovich, Mikhail M. Shushpanov