公开(公告)号：DE3463754D1

公开(公告)日：1987-06-25

申请号：DE3463754

申请日：1984-03-16

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: C03C10/04 ,  C03C3/085 ,  C03C3/097 ,  C03C10/00 ,  C03C10/06 ,  C03C10/08 ,  C03C14/00

公开(公告)号：AT29481T

公开(公告)日：1987-09-15

申请号：AT83630083

申请日：1983-05-17

Applicant: UNITED TECHNOLOGIES CORP ,  CORNING GLASS WORKS

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

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

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：AT27258T

公开(公告)日：1987-06-15

申请号：AT84630050

申请日：1984-03-16

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: C03C10/04 ,  C03C3/085 ,  C03C3/097 ,  C03C10/00 ,  C03C10/06 ,  C03C10/08 ,  C03C14/00

公开(公告)号：CA1220495A

公开(公告)日：1987-04-14

申请号：CA449497

申请日：1984-03-13

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: C03C10/04 ,  C03C3/085 ,  C03C3/097 ,  C03C10/00 ,  C03C10/06 ,  C03C10/08 ,  C03C14/00 ,  C04B35/80

Abstract: A silicon carbide fiber reinforced barium modified magnesium aluminosilicate matrix composite is described having high strength and thermal stability at temperatures in excess of 1200.degree.C. The matrix material contains about 5% to about 14% magnesium oxide and about 5% to about 25% barium oxide. While any suitable ratios of fiber to matrix can be used, the composite for most applications for example, in the heat engine area, will contain approximately 20% to 50% by volume silicon carbide fibers.

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.