公开(公告)号：US5153152A

公开(公告)日：1992-10-06

申请号：US770876

申请日：1991-10-04

Applicant: Steven B. Dawes ,  John L. Stempin ,  Dale R. Wexell

Inventor： Steven B. Dawes ,  John L. Stempin ,  Dale R. Wexell

IPC: C03C14/00 ,  C04B35/80 ,  C04B41/87

CPC classification number: C04B35/62868 ,  B32B18/00 ,  C03C14/002 ,  C04B35/195 ,  C04B35/62852 ,  C04B35/62873 ,  C04B35/62884 ,  C04B35/62886 ,  C04B35/62894 ,  C04B35/80 ,  C03C2214/02 ,  C03C2214/03 ,  C03C2214/20 ,  C03C2214/30 ,  C04B2235/36 ,  C04B2235/5224 ,  C04B2235/5228 ,  C04B2235/524 ,  C04B2235/5244 ,  C04B2235/5248 ,  C04B2235/5252 ,  C04B2235/5268 ,  C04B2235/5276 ,  C04B2235/5436 ,  C04B2235/656 ,  C04B2235/77 ,  C04B2235/80 ,  C04B2235/96 ,  C04B2237/341 ,  C04B2237/365 ,  C04B2237/38 ,  Y10T428/24124 ,  Y10T428/2918

Abstract: A fiber-reinforced ceramic matrix composite article comprising fiber-reinforced surface portions disposed on a ceramic core, the core differing in composition and high temperature properties from the surface portions and the fibers present in the surface portions being of a type normally subject to oxidative deterioration at high temperature, wherein the fibers in the surface portion are provided with protection from high temperature oxidative deterioration such that excellent strength and resistance to high temperature embrittlement are achieved for the composite as a whole.

公开(公告)号：US5132253A

公开(公告)日：1992-07-21

申请号：US628413

申请日：1990-12-17

Applicant: Steven B. Dawes

Inventor： Steven B. Dawes

IPC: C01B33/26 ,  C01B33/24 ,  C01B33/40 ,  C01B33/42 ,  C01F11/00 ,  C03B8/02 ,  C03C1/00 ,  C03C14/00 ,  C04B33/04 ,  C04B35/00 ,  C04B35/624 ,  C04B35/626 ,  C04B35/80 ,  C04B38/00

CPC classification number: C01B33/28 ,  C03C1/008 ,  C03C14/002 ,  C04B35/624 ,  C04B35/803 ,  C03C2214/02 ,  C03C2214/03 ,  C03C2214/20 ,  C03C2214/32

Abstract: A method for synthesizing alkaline earth metal-containing ceramic materials by sol-gel processing is described, wherein a sol containing alkoxides or other soluble precursors for a selected ceramic composition, and additionally containing one or more dissolved alkaline earth metal/crown either complexes, is gelled, dried and fired to convert the precursors and complexes to a polycrystalline ceramic product. The crown ether complexes improve alkaline earth metal solubility and the homogeneous incorporation of these metals into the precursor gels and final crystalline products.

Abstract translation: 描述了通过溶胶 - 凝胶加工合成含碱土金属的陶瓷材料的方法，其中含有选择的陶瓷组合物的醇盐或其它可溶性前体的溶胶，另外含有一种或多种溶解的碱土金属/ 胶凝，干燥并焙烧以将前体和复合物转化为多晶陶瓷产品。 冠醚络合物改善了碱土金属的溶解性，并且将这些金属均匀地引入前体凝胶和最终的结晶产物中。