Patent ID: 6043451
Filing Date: 2000-03-28
Classification: C23C,H05H

Abstract:
A process for deposition of a nickel-titanium intermetallic compound onto a surface of a substrate, comprising:heating and ionizing a mixture of non-reactive gasses in a plasmatron to form a plasma stream;entraining in said mixture powder particles made of an electrically insulating, thermally conducting material, thereby heating said particles to a partially molten state;ejecting said partially molten particles in said mixture from said plasmatron at high velocity and impacting said partially molten powder particles against a substrate surface to produce an electrical insulating layer on said substrate;after said insulating layer has been formed, entraining nickel-titanium intermetallic compound in said mixture, thereby heating said nickel-titanium intermetallic compound to a partially molten state; andejecting said partially molten intermetallic compound in said mixture from said plasmatron at high velocity and impacting said partially molten intermetallic compound to produce a deposition of said nickel-titanium intermetallic compound on said insulating layer.