%0 Journal Article
%T FRACTURE CHARACTERS AND TOUGHENING MECHANISMS OF Al_20_3-ZrO_2-SiCw CERAMIC COMPOSITE<br>Al_2O_3-ZrO_2-SiCw陶瓷复合材料的断裂特点和韧化机理
%A GE Qilu
%A LEI Tingquan
%A ZHOU Yu
%A <br>葛启录
%A 雷廷权
%A 周玉
%J 材料研究学报
%D 1992
%I 
%X In this paper fracture characters and toughening mechanisms of Al_2O_3-25 v.-%ZrO_2(2 mol% Y_2O_3)-25 v.-% SiCw(AZS)have been studied by means of XRD,SEM,TEMand three-point-bending techniques.Results have shown that the load-displacement curve ofthe material is saw-toothed in shape because whiskers inhibite repeatly crack propagation.Abetter toughness of the material is considered as the results of phase transformation andmicrocrack toughening of ZrO_2,crack deflection and branching and crack bridging andpull-out effect of SiCw.However,their combined effect is not added simply.This paper alsosets up a multiple toughening model of ZrO_2-SiCw and has a discussion.
%K ZrO_2
%K SiC whisker
%K ceramic composite
%K toughening<br>ZrO_2增韧
%K SiC晶须增韧补强
%K 陶瓷复合材料
%K 韧化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=3932E7C6B91F2B92&yid=F53A2717BDB04D52&vid=B31275AF3241DB2D&iid=0B39A22176CE99FB&sid=F1A8654ADB4E656E&eid=798FBE8DE1A255B1&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=1