%0 Journal Article
%T MICROSTRUCTURE AND MECHANICAL PROPERTIES OF IN-SITU FORMATION FIBROUS POLYTYPE AIN COMPOSITE MATERIAL<br>原位生长纤维状多型体AlN复合陶瓷材料的显微结构与力学性能
%A LI Zonghuai
%A CHEN Shengqi
%A ZHOU Yanchun
%A XIA Fei
%A <br>李宗怀
%A 陈声崎
%A 周延春
%A 夏非
%J 金属学报
%D 1992
%I 
%X In-situ formation fibrous polytype AIN composite ceramic material was prepared from AlN-Y_2O_3-SiO_2 system. In comparison with AlN ceramics, both bending strength and fracture toughness of the composite material 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 material and as medium for growth of fibrous polytype. SiO_2 is the growth promoter for fibrous polytype. The occurrence of fibrous polytype may increase the strength and toughness of AlN ceramic composite material.
%K AIN ceramics
%K in-situ formation
%K fibrous polytype<br>AlN陶瓷
%K 原位生长
%K 纤维状多型体
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=A09B913DDD944BA65861ECFC1E9F3299&yid=F53A2717BDB04D52&vid=D3E34374A0D77D7F&iid=DF92D298D3FF1E6E&sid=869807E2D7BED9EC&eid=BB0EA31DB1B01173&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=1