Metal Matrix Composite Piston Head and Method of Fabrication.
Patent, Filed 9 Jan 86, patented 17 Nov 87,
DEPARTMENT OF THE NAVY WASHINGTON DC
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The present invention is directed to providing an improvement for an internal combustion engine having hot working gases displacing at least one reciprocating aluminum piston. A metal matrix composite piston head is inertially welded onto the piston. The piston is fabricated from aluminium and the metal matrix composite piston head has an aluminum and the metal matrix composite piston head has an aluminum-silicon carbide composition in which there is a 23 weight silicon carbide fiber composition. The method embraces the mixing of a metal matrix composite having a composition of 23 weight of silicon carbide fibers with powdered aluminum, pressing the mixed metal matrix composite to a billet form having nearly the same diameter as the aluminum piston and impact welding the billet to form a metal matrix composite head on the aluminum piston.
- Reciprocating and Rotating Engines
- Laminates and Composite Materials