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VLS silicon carbide whisker reinforced metal matrix composites

  • US 5,207,263 A
  • Filed: 12/26/1989
  • Issued: 05/04/1993
  • Est. Priority Date: 12/26/1989
  • Status: Expired due to Term
First Claim
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1. A process for preparing a whisker reinforced metal matrix composite material comprising:

  • 1) providing VLS silicon carbide whiskers in a mold cavity;

    2) introducing a molten metal into the mold cavity;

    3) subjecting the molten metal and VLS silicon carbide whiskers in the cavity to a primary pressure of about 100 psi to about 2000 psi to infiltrate the whiskers with the molten metal;

    4) subsequently subjecting the VLS silicon carbide whiskers infiltrated with the molten metal to a hydrostatic pressure at about 10,000 psi to about 25,000 psi to produce a fully dense mass; and

    5) solidifying the composite to form a composite.

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