公开(公告)号：FR2827277B1

公开(公告)日：2006-03-03

申请号：FR0208982

申请日：2002-07-16

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHMIDT WAYDE R ,  GIEDT DONALD C

IPC: C04B35/565 ,  C04B35/577 ,  C04B35/571 ,  C04B35/573 ,  C04B35/65 ,  C04B35/80 ,  C04B35/83 ,  C22C29/06

Abstract: A method for preparing a refractory carbide component includes the steps of providing a carbon rich polymer precursor to silicon carbide and excess carbon, determining an amount of excess carbon in the carbon rich polymer precursor, combining the carbon rich polymer precursor with a selected amount of refractory metal to form a precursor/metal mixture, the selected amount being selected so as to provide stoichiometrically equivalent amounts of the excess carbon and the refractory metal, forming the mixture into a preform of a propulsion component, and heating the preform so as to thermally degrade the carbon rich polymer precursor to produce the silicon carbide and the excess carbon, the excess carbon and the refractory metal reacting to form refractory metal carbide and provide the refractory carbide component.

公开(公告)号：FR2827277A1

公开(公告)日：2003-01-17

申请号：FR0208982

申请日：2002-07-16

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHMIDT WAYDE R ,  GIEDT DONALD C

IPC: C04B35/565 ,  C04B35/571 ,  C04B35/573 ,  C04B35/80 ,  C22C29/06 ,  C04B35/577 ,  C04B35/65 ,  C04B35/83

Abstract: Production of refractory carbides comprises preparing a polymer (I), combining it with a refractory metal (II) in an amount stoichiometrically equivalent to the excess carbon, shaping the mixture to form a blank for a propulsion unit component, and heating the blank so that (I) decomposes. (I) is capable of forming silicon carbide and contains excess carbon, and is combined with (II) in an amount stoichiometrically equivalent to the excess carbon. (I) decomposes into silicon carbide and excess carbon such that the excess carbon reacts with the metal to form a refractory carbide.