Oxidative stable ceramic composites
    1.
    发明授权
    Oxidative stable ceramic composites 失效
    氧化稳定陶瓷复合材料

    公开(公告)号:US5605868A

    公开(公告)日:1997-02-25

    申请号:US365811

    申请日:1994-12-29

    IPC分类号: C03C10/06 C03C14/00

    摘要: This invention is directed to the fabrication of SiC fiber reinforced, ceramic matrix composite articles exhibiting superior high temperature oxidative stability, those articles comprising:(a) a glass-ceramic matrix wherein alkali metal and/or alkaline earth metal aluminosilicate crystals constitute the predominant crystal phase;(b) a fiber reinforcing phase comprising SiC fibers coated with an alkali metal and/or alkaline earth metal sheet silicate entrained within said glass-ceramic matrix; and(c) a borosilicate glass phase dispersed as an intergranular glass within said glass-ceramic matrix, said borosilicate glass phase generally being present in an amount sufficient to provide an intergranular glass phase therein.

    摘要翻译: 本发明涉及制备表现出优异的高温氧化稳定性的SiC纤维增强陶瓷基复合材料制品,所述制品包括:(a)玻璃 - 陶瓷基体,其中碱金属和/或碱土金属硅铝酸盐晶体构成主要晶体 相; (b)纤维增强相,其包含被夹在所述玻璃 - 陶瓷基体内的碱金属和/或碱土金属片状硅酸盐涂覆的SiC纤维; 和(c)在所述玻璃 - 陶瓷基体内作为晶间玻璃分散的硼硅酸盐玻璃相,所述硼硅酸盐玻璃相通常以足以在其中提供晶间玻璃相的量存在。

    Fiber-reinforced composite with sheet silicate interlayer
    2.
    发明授权
    Fiber-reinforced composite with sheet silicate interlayer 失效
    纤维增强复合材料与硅酸铝中间层

    公开(公告)号:US5652188A

    公开(公告)日:1997-07-29

    申请号:US287224

    申请日:1994-08-08

    IPC分类号: C03C14/00 C04B35/80

    CPC分类号: C03C14/002 C04B35/803

    摘要: The invention relates to fiber reinforced composite materials, and a method for making, in which ceramic, glass-ceramic or glass matrix precursor particles are coated with a layer of sheet silicate crystals, or precursors for sheet silicate crystals, and then combined with a fiber reinforcement phase disposed within the matrix consisting of amorphous or crystalline inorganic fibers. The method results in a composite material in which a substantially continuous layer of sheet silicate is provided on the matrix particles, resulting in a substantially continuous sheet silicate interface between the inorganic fibers and the ceramic, glass or glass-ceramic matrix.

    摘要翻译: 本发明涉及纤维增强复合材料及其制造方法,其中陶瓷,玻璃 - 陶瓷或玻璃基质前体颗粒涂覆有一层硅酸盐晶体或硅酸铝晶体的前体,然后与纤维 强化相设置在由无定形或结晶无机纤维构成的基体内。 该方法产生复合材料,其中在基体颗粒上提供基本上连续的层状硅酸盐层,导致无机纤维和陶瓷,玻璃或玻璃 - 陶瓷基体之间的基本上连续的硅酸盐界面。

    Reinforced calcium aluminosilicate glass-ceramics
    7.
    发明授权
    Reinforced calcium aluminosilicate glass-ceramics 失效
    增强铝硅酸铝玻璃陶瓷

    公开(公告)号:US4755489A

    公开(公告)日:1988-07-05

    申请号:US943072

    申请日:1986-12-18

    摘要: The present invention is directed to the production of SiC whisker- and/or fiber-reinforced, internally-nucleated glass-ceramic matrix composite articles consisting essentially of 0.5-60% by weight SiC whiskers and/or 15-70% by volume ceramic fibers substantially uniformly distributed in a glass-ceramic matrix consisting essentially, in weight percent on the oxide basis, of 16-20%, CaO, 38.5-46% Al.sub.2 O.sub.3, 35-42% SiO.sub.2, and up to 10% total of at least one nucleating agent in the indicated proportion selected from the group consisting of 0.1-3% Cr.sub.2 O.sub.3, 0.25-3% HfO.sub.2, 2-5% MoO.sub.3, 0.25-3% Nb.sub.2 O.sub.5, 0.25-3% Ta.sub.2 O.sub.5, 0.25-3% WO.sub.3, and 1-10% ZrO.sub.2, wherein Al.sub.2 O.sub.3 is present in an amount which is at least 5 mole percent and up to 50 mole percent in excess of that present in stoichiometric triclinic anorthite, and wherein the predominant crystal phases in the glass-ceramic are triclinic anorthite and mullite and/or .alpha.-Al.sub.2 O.sub.3. Up to 1.5% As.sub.2 O.sub.3 may advantageously be included in the composition.

    摘要翻译: 本发明涉及生产基本上由0.5-60%(重量)SiC晶须和/或15-70%(体积)陶瓷纤维组成的SiC晶须和/或纤维增强的,内部成核的玻璃 - 陶瓷基复合材料 基本上均匀分布在基本上以氧化物为基准重量百分比为16-20%,CaO,38.5-46%Al2O3,35-42%SiO2和至多10%总共的至少一种 指定比例的成核剂选自0.1-3%Cr2O3,0.25-3%HfO2,2.5%MoO3,0.25-3%Nb2O5,0.25-3%Ta2O5,0.23%WO3和1% -10%的ZrO 2,其中Al 2 O 3以至少5摩尔%且高达50摩尔%的量存在于化学计量的三斜钙石中存在,并且其中玻璃 - 陶瓷中的主要结晶相是三斜长岩和 莫来石和/或α-Al2O3。 高达1.5%的As2O3可以有利地包括在组合物中。

    Reinforcement of alkaline earth aluminosilicate glass-ceramics
    9.
    发明授权
    Reinforcement of alkaline earth aluminosilicate glass-ceramics 失效
    增强碱土铝硅酸盐玻璃陶瓷

    公开(公告)号:US4615987A

    公开(公告)日:1986-10-07

    申请号:US723572

    申请日:1985-04-15

    摘要: 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, of______________________________________ CaO 0-25 MgO 0-15 SrO 0-30 Na.sub.2 O 0-4 CaO + SrO 10-30 K.sub.2 O 0-6 Al.sub.2 O.sub.3 25-38 TiO.sub.2 0-12 SiO.sub.2 35-60 ZrO.sub.2 0-15 BaO 0-25 As.sub.2 O.sub.3 0-3 BaO + MgO + Na.sub.2 O + K.sub.2 O + TiO.sub.2 ZrO.sub.2 + As.sub.2 O.sub.3 0-30 ______________________________________ The preferred predominant crystal phase is selected from the group of anorthite and its pseudo-binaries, with mullite, cordierite, barium osumilite, and albite solid solution.

    摘要翻译: 本发明涉及SiC晶须和/或纤维增强玻璃 - 陶瓷基复合材料制品,其中碱土铝硅酸盐构成主要晶相。 更具体地,复合制品将基本上由10-60重量%的SiC晶须和/或15-70体积%的陶瓷纤维组成,并且玻璃 - 陶瓷基体将基本上由氧化物基础上由-CaO 0- 25 MgO 0-15 -SrO 0-30 Na2O 0-4 -CaO + SrO 10-30 K2O 0-6 -Al2O3 25-38 TiO2 0-12 -SiO2 35-60 ZrO2 0-15 -BaO 0-25 As2O3 0 -3BaO + MgO + Na2O + K2O + TiO2ZrO2 + As2O3 0-30 - 优选的主要结晶相选自钙长石及其伪二进制,与莫来石,堇青石,奥斯米石和钠长石固溶体相组合。