%0 Journal Article
%T Densification of in-situ Toughened SiC-YAG Composites<br>原位增韧SiC-YAG复相陶瓷的致密化
%A HUANG Zheng-Ren
%A CHO Seong-Jai
%A TAN Shou-Hong
%A JIANG Dong-Liang
%A <br>黄政仁
%A 谭寿洪
%A 江东亮
%A 赵诚宰
%J 无机材料学报
%D 1999
%I Science Press
%X Densification, a phase transformation, elongated SiC grain growth and microstructure,and mechanical properties, especially toughness, of in--situ toughened SiC-YAG composites wereinvestigated in detail. By using packing powders with same compositions as packed samples, theevaporation of Al2O3 was inhibited and full densification (>99% of theoretical density) of in-situtoughened SiC-YAG was achieved. The phase transformation occurrs at 1950, however,remained SiC can be still found by XRD after post-heated at 2100 for 4h. The content ofliquid phase and a-SiC seeds has no effect on the phase transformation rate. Following phasetransformation and grain growth during post-heating, further densification of in-situ SiC-YAGcontinues and the network microstructure consisting of elongated SiC grains can be obtained.Finally, the SEPB fracture toughness achieved is near 7.0 MPa.m1/2.
%K in-situ toughening
%K liquid phase sintering
%K Silicon Carbide
%K YAG<br>原位增韧
%K 液相烧结
%K 碳化硅
%K YAG
%K 复合陶瓷
%K 致密化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=28E474ED8263CFB6&yid=B914830F5B1D1078&vid=F3583C8E78166B9E&iid=94C357A881DFC066&sid=71128DCBD6E39665&eid=20D29EF591CB2C94&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=8&reference_num=14