%0 Journal Article
%T INFLUENCE OF LOADING RATE AND SPECIMEN HEIGHT ONFLEXURAL STRENGTH OF Al2O3 AT HIGH TEMPERATURES<br>INFLUENCE OF LOADING RATE AND SPECIMEN HEIGHT ON FLEXURAL STRENGTH OF Al_2O_3 AT HIGH TEMPERATURES
%A S.H. Bai
%A S.R. Qiao
%A S.R. Zhou and M.K. Kang Faculty
%A Northwestern Polytechnical University
%A Xian
%A China
%J 金属学报(英文版)
%D 1999
%I 
%X In this paper, the influence of loading rate and specimen height on flexural strength of Al2O3 at high temperatures has been studied by three-point bending method. The experimental results show that the flexural strength of Al2O3 decreases with increasing specimen height at room temperature, and it tends to stability when height increases to a certain degree (h=5mm in this paper), while the flexural strength of Al2O3 variates unapparently at high temperature with increasing height. There is a critical loading rate R . c. When loading rate R . is less than R . c, the flexural strength of Al2O3 increases with increasing loading rate and it drops sharply when loading rate is higher than R . c. The sensitivity of flexural strength to the loading rate decreases with elevating temperatures.
%K loading rate
%K specimen height
%K high temperature
%K flexural
%K strength<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=5815A3B5D65180AE37F18387A4D15BF0&yid=B914830F5B1D1078&vid=59906B3B2830C2C5&iid=CA4FD0336C81A37A&sid=933658645952ED9F&eid=7C3A4C1EE6A45749&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=0