Research/Patents/US 5194338
US 5194338

PRECERAMIC COMPOSITIONS CONTAINING SILICON BASED POWDER

Assignee

ETHYL CORPORATION

Filed

Jan 24, 1991

Granted

Mar 16, 1993

Location

BIRMINGTON MI US

Abstract

Preceramic compositions which have particular utility in providing protective ceramic coatings on carbonaceous and other normally oxidizable substrates are prepared by dispersing about 0.4-3.0 parts by weight of a ceramic powder selected from silicon carbide, silicon nitride, and mixtures thereof with one another and/or with up to about 90% by weight of (1) a metal boride or (2) a mixture of a metal boride and zirconium metal in one part by weight of a polysilazane.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

May 31, 1991

Rescinded

May 26, 1992

Duration

12 months

Inventor

  • 1LEONARD M. NIEBYLSKI
Back to patent indexSource: USPTO 35 USC §181 secrecy order records