%0 Journal Article
%T Measurement of the Fracture Toughness and Critical Stress for Cracking in SnO2 Nanobelts Using Nanoindentation<br>单晶SnO2纳米带裂纹形核的临界应力和断裂韧性
%A WANG Yugui
%A QIAO Lijie
%A GAO Kewei
%A SU Yanjing
%A CHU Wuyang
%A WANG Zhonglin
%A <br>王玉桂
%A 乔利杰
%A 高克玮
%A 宿彦京
%A 褚武扬
%A 王中林
%J 金属学报
%D 2004
%I 
%X The hardness, fracture toughness and the critical stress for crack initiation of single crystalline nanobelts have been measured using nanoindentation method. The result showed that a sudden depth excursion occurred in the load--depth curves which corresponds to initiation of an indentation crack. The critical stress for the crack initiation. which is one order of magnitude less than that of the other bulk brittle materials. The average values of the hardness and modulus are H=6.25 GPa and E=86.7 GPa, respectively.
%K SnO_2 nanobelt
%K nanoindentation
%K hardness
%K fracture toughness
%K breaking stress<br>SnO2纳米带
%K 纳米压痕
%K 硬度
%K 断裂韧性
%K 裂纹形核临界应力
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=26EE7A4AFBB1B8D0&yid=D0E58B75BFD8E51C&vid=1371F55DA51B6E64&iid=B31275AF3241DB2D&sid=65FC738C50B41E43&eid=4720E9D07E8A2290&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=10