%0 Journal Article
%T Stress corrosion cracking of a BaTiO{3} ferroelectric ceramics<br>BaTiO3铁电陶瓷的应力腐蚀
%A WANG Ruimin CHU Wuyang SU Yanjing GAO Kewei QIAO Lijie
%A <br>王瑞敏
%A 褚武扬
%A 宿彦京
%A 高克玮
%A 乔利杰
%J 材料研究学报
%D 2004
%I 
%X Stress corrosion cracking (SCC) or static fatigue fracture of a BaTiO$_{3}$ ferroelectric ceramics in moist atmosphere, water, silicon oil and formamide was investigated at constant load test using a single--edge notched tensile specimen. The result showed that SCC could occur in these four environments. The fracture surface overloaded in air is transgranular brittle fracture, and the fracture surfaces of SCC in moist atmosphere, water, silicon oil and formamide are mainly transgranular but there is a small intergranular region. The normalized threshold stress intensity factor of SCC was 0.78(in air), 0.63(in water), 0.66(in silicon oil) and 0.82 (in formamide), respectively, and the fracture toughness is 1.29$\pm$0.14 MPa$\cdot$m$^{1/2}$.
%K inorganic non-metallic materials
%K PZT ceramic
%K stress corrosion cracking
%K threshold stress intensity factor<br>无机非金属材料
%K BaTiO3陶瓷
%K 应力腐蚀开裂
%K 门槛应力强度因子
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=AE0523FC36882F3C&yid=D0E58B75BFD8E51C&vid=13553B2D12F347E8&iid=E158A972A605785F&sid=D1D63D047E37A053&eid=B7ACE2F11789CAE0&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=14