%0 Journal Article
%T Temperature dependence of elastic modulus of single crystal sapphire investigated by laser ultrasonic<br>激光超声技术测量高温下蓝宝石单晶的弹性模量
%A Song Yun-Fei
%A Yu Guo-Yang
%A Yin He-Dong
%A Zhang Ming-Fu
%A Liu Yu-Qiang
%A Yang Yan-Qiang
%A <br>宋云飞
%A 于国洋
%A 殷合栋
%A 张明福
%A 刘玉强
%A 杨延强
%J 物理学报
%D 2012
%I 
%X The longitudinal ultrasonic wave launched by ns-laser pulse is used to measure the temperature dependence of the elastic modulus C33 of single crystal sapphire.The result shows that in a temperature from room temperature to 1000°C the elastic modulus of sapphire C33 reduces as the temperature increases,following the relationship C33 =-1.541 x 10(-50T2 - 0.021T + 498.3.In this method,the ablation mechanism is adopted to launch strong longitudinal waves,therefore,the result is accurate that the error of the measurement is estimated to be no more than 0.1%.
%K laser ultrasonic
%K sapphire
%K elastic modulus
%K high temperature<br>激光超声
%K 蓝宝石
%K 弹性模量
%K 高温
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=790A9358A1C1D6557814B2B48448F41B&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=B31275AF3241DB2D&sid=AFDA463E533A4020&eid=AFDA463E533A4020&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=19