%0 Journal Article
%T Evaluation of Morphology-Stable Critical Size of KNbO3 Crystals<br>Evaluation of Morphology—Stable Critical Size of KNbO3 Crystals
%A Lixia CAI
%A Weiqing JIN
%A Zhilei PAN
%A Xin''an LIANG
%A Shinichi Yoda
%A <br>Xin＇an
%A LIANG
%J 材料科学技术学报
%D 2002
%I 
%X Skeletal form of KNbO3 crystals growing in Li2B4O7 solvent was in-situ observed at 900C and it was found thatshallow depression started to develop on the surface of KNbO3 crystals when the crystal size exceeded several micron,typically 7 micron. Based on the quantitative criterion derived by Chernov, the estimated critical size of KNbO3crystals was 1 micron, which was consistent with the experimental measurement. The kinetic coefficients, kc erand kc,, in the criterion were experimentally obtained in the diffusive-convective and diffusive-advective flow statesrespectively.
%K Morphology instability
%K KNbO3
%K In-situ observation
%K Electron microprobe analyses<br>铌酸钾晶体
%K 硼酸锂
%K 结构
%K 晶体尺寸
%K 组织
%K KNbO3
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=34FEF98F5BF1CAB73AC53411437C00B1&yid=C3ACC247184A22C1&vid=13553B2D12F347E8&iid=CA4FD0336C81A37A&sid=C36EC077A8A90308&eid=6700D0D256586E73&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0