×

Methods for fabricating shapes by use of organometallic ceramic precursor binders

  • US 5,884,688 A
  • Filed: 10/26/1995
  • Issued: 03/23/1999
  • Est. Priority Date: 04/30/1993
  • Status: Expired due to Fees
First Claim
Patent Images

1. A process for fabricating shaped articles by casting comprising:

  • at least partially coating the surface of at least one sand with at least one hardenable, solventless liquid, organometallic, ceramic precursor binder comprising a material selected from the group consisting of polysilazane, polyureasilazane, polythioureasilazane and polysiloxane to form a sand/binder mixture;

    forming at least one shape from said sand/binder mixture;

    hardening said sand/binder mixture by a crosslinking mechanism to form at least one sand mold, shell, or core; and

    casting at least one metal or metal matrix composite into the resulting hardened at least one sand mold, shell, or core to form at least one shaped metal or metal matrix composite article.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×