%0 Journal Article
%T On the Influence of Machining Process on Mechanical Properties of SOFC<br>工艺过程对固体氧化物燃料电池材料力学性能的影响
%A WANG Feng-hui
%A SHI Hai-bo
%A <br>王峰会
%A 石海波
%J 实验力学
%D 2012
%I 
%X In the process of solid oxide fuel cells (SOFCs) production, different machining means may produce material damage. At the same time, material sintering process produces a relatively large residual stress. Above factors will affect battery life and integrity In this paper, the influence of different machining process on mechanical properties of material was experimentally studied, including: direct punching, laser cutting and grinding after laser cutting. The strength of tested specimens was also tested. Results show that the dispersibility of mechanical property caused by direct punching is large; the property after laser cutting is good; the influence of grinding after laser cutting is minimum. By the residual stress or effective stress in different layers, material strength of monolayer anode structure is higher than that of material with bilayer structure. Based on bending test, the residual stress in half-cell structure and the residual stress corresponding to different film thickness were tested. Tested results were compared with that of thermal elasticity theory. The computed residual stress is higher than experimental results due to the stress relaxation of anode material produced by high temperature.
%K Solid oxide fuel cell(SOFC)
%K residual stress
%K machining process
%K failure strength<br>固体氧化物燃料电池
%K 残余应力
%K 加工过程
%K 断裂强度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=49067A0A0D864088C06A84AACB51A5B2&aid=9E6414EEE56C41940D19CD55C2D06C6E&yid=99E9153A83D4CB11&vid=DB817633AA4F79B9&iid=94C357A881DFC066&sid=39E48869A719B9DE&eid=28B3EB92D5061EA4&journal_id=1001-4888&journal_name=实验力学&referenced_num=0&reference_num=0