VACUUM COLD SPRAY PROCESS

摘要

PROBLEM TO BE SOLVED: To provide a method for forming one or more deposited layers on a substrate using cold spray which avoids oxidation of an outermost deposited layer during deposition. SOLUTION: The method for depositing a metallic material onto a substrate (10) comprises the steps of placing the substrate (10)in a vacuum chamber (52), inserting a spray gun (22) nozzle (20) into a port (50) of the vacuum chamber (52), and depositing a powdered metallic material onto a surface (24) of the substrate without melting the powdered metal material. The depositing step comprises accelerating particles of the powdered metal materials within the vacuum chamber (52) to a prescribed velocity so that upon impact the particles plastically deform and bond to the surface (24) of the substrate (10). COPYRIGHT: (C)2006,JPO&NCIPI