%0 Journal Article
%T MICROSTRUCTURE AND MECHANICAL PROPERTIES OF IN-SITU FORMATION FIBROUS POLYTYPE AlN COMPOSITE-MATERIAL
%A LI Zonghuai CHEN Shengqi ZHOU Yanchun XIA Fei Institute of Metal Research
%A Academia Sinica
%A Shenyang
%A China Professor
%A <br>LI Zonghuai CHEN Shengqi ZHOU Yanchun XIA Fei Institute of Metal Research
%A Academia Sinica
%A Shenyang
%A China Professor
%A Institute of Metal Research
%A Academia Sinica
%A Shenyang
%A China
%J 金属学报(英文版)
%D 1993
%I 
%X In-situ formation fibrous polytype AlN composite ceramic materials was prepared from AlN-Y_2O_3-SiO_2 system.In comparison with AlN ceramics,both bending strength and fracture toughness of the composite materials are much bettered.Microstructural observation revealed that a lot of epitaxial growth fibrous AlN polytype occurred in matrix.Y_2O_3 seems to act as a densifier for in-situ formation materials and as medium for growth of fibrous polytype.SiO_2 is the growth promoter for fibrous polytype.The occurrnce of fibrous polytype may increase the strength and toughness of AlN ceramic composite mateirals.
%K AIN ceramics
%K in-situ formation
%K fibrous polytype<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=02389EA63C8CDE8900383AC6BEB51296&yid=D418FDC97F7C2EBA&vid=B31275AF3241DB2D&iid=DF92D298D3FF1E6E&sid=2001E0D53B7B80EC&eid=94E7F66E6C42FA23&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=7