System and process for solid-state deposition and consolidation of high velocity powder particles using thermal plastic deformation
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United States of America Patent
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Jul 12, 2005
Grant Date -
Nov 14, 2002
app pub date -
Apr 5, 2002
filing date -
Apr 24, 2001
priority date (Note) -
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Abstract
The invention relates to an apparatus and process for solid-state deposition and consolidation of powder particles entrained in a subsonic or sonic gas jet onto the surface of an object. Under high velocity impact and thermal plastic deformation, the powder particles adhesively bond to the substrate and cohesively bond together to form consolidated materials with metallurgical bonds. The powder particles and optionally the surface of the object are heated to a temperature that reduces yield strength and permits plastic deformation at low flow stress levels during high velocity impact, but which is not so high as to melt the powder particles.
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