公开(公告)号：DE3373463D1

公开(公告)日：1987-10-15

申请号：DE3373463

申请日：1983-05-17

Applicant: UNITED TECHNOLOGIES CORP ,  CORNING GLASS WORKS

Inventor： BRENNAN JOHN J ,  CHYUNG KENNETH ,  TAYLOR MARK P

IPC: C03C10/00 ,  C03C14/00 ,  C03C10/12 ,  C03C10/14 ,  D01F9/08

公开(公告)号：AU4942985A

公开(公告)日：1986-10-23

申请号：AU4942985

申请日：1985-11-07

Applicant: CORNING GLASS WORKS

Inventor： CHYUNG KENNETH ,  COOPER REID FRANKLIN ,  GADKAREE KISHOR PURUSHOTTAM ,  STEWART RONALD LEROY ,  TAYLOR MARK PETER

IPC: C03B32/00 ,  C03B32/02 ,  C03C10/00 ,  C03C10/06 ,  C03C14/00

Abstract: The present invention is directed to SiC whisker and/or fiber reinforced glass-ceramic matrix composite articles wherein an alkaline earth aluminosilicate constitutes the predominant crystal phase. More particularly, the composite articles will consist essentially of 10-60% by weight SiC whiskers and/or 15-70% by volume ceramic fibers and the glass-ceramic matrix will consist essentially, by weight on the oxide basis, ofThe preferred predominant crystal phase is selected from the group of anorthite and its pseudo-binaries, with mullite, cordierite, barium osumilite, and albite solid solution.

公开(公告)号：CA1211476A

公开(公告)日：1986-09-16

申请号：CA443972

申请日：1983-12-21

Applicant: CORNING GLASS WORKS

Inventor： BEALL GEORGE H ,  CHIRINO AGUSTIN M ,  CHYUNG KENNETH ,  MARTIN FRANCIS W ,  TAYLOR MARK P

IPC: C03C10/06

Abstract: This invention is directed to the production of glassceramic bodies exhibiting high strength and capable of being used at temperatures of 1300.degree.C and higher. Barium osumilite constitutes the predominant crystal phase and the inventive bodies have overall compositions consisting essentially, in weight percent, of: SiO2 51-68 Al2O3 17.5-30 MgO 5-12 BaO 3.5-15 Si 0-1 Nb2O5 0-20 Ta2O5 0-10 TiO2 0-12 ZrO2 0-6 The bodies can be utilized in monolith form and are very useful as matrices for fiber reinforced structures suitable for high temperature applications.

公开(公告)号：CA1198744A

公开(公告)日：1985-12-31

申请号：CA428316

申请日：1983-05-17

Applicant: UNITED TECHNOLOGIES CORP ,  CORNING GLASS WORKS

Inventor： BRENNAN JOHN J ,  CHYUNG KENNETH ,  TAYLOR MARK P

IPC: C03C10/00 ,  C03C14/00 ,  C04B14/38

Abstract: Reaction Inhibited-Silicon Carbide Fiber Reinforced High Temperature Glass-Ceramic Composites And Compositions Therefor A silicon carbide fiber reinforced glassceramic matrix composite is disclosed having high strength, fracture toughness, and improved oxidative stability even at high temperature use, e.g., in excess of 1000.degree.C. The composite is made up of a plurality of glass-ceramic layers, each layer reinforced with a plurality of unidirectional continuous length silicon carbide or discontinuous SiC fibers. The composite is formed by starting with the matrix material (preferably lithium aluminosilicate) in the glassy state and converting it from the glassy state to the crystalline state after densification of the composite. Ta or Nb compounds are added to the matrix composition prior to consolidation to form a reaction or diffusion barrier around the SiC fiber, resulting in composites with high temperature oxidation stability. Substitution of at least part of the Li2O in the matrix with MgO results in an even higher temperature stable composite, e.g., up to about 1200.degree.C. Another aspect of the instant invention is directed to the preparation of glass-ceramic bodies exhibiting high strengths and use temperatures up to 1200.degree.C. The bodies consist essentially, expressed in terms of weight percent on the oxide basis, of Li2O 1.5 - 5 Al2O3 15 - 25 SiO2 60 - 75 ZrO2 1 - 5 Nb2O5 0 - 10 Ta2O5 0 - 10 Nb2O5 + Ta2O5 1 - 10 MgO 0 - 1 0 Where excellent resistance to oxidation up to temperatures of 1200.degree.C is desired, 0.5-3% As2O3 will be included in the composition.