%0 Journal Article
%T ON OF TEXTURAL YBa_2Cu_3O_(7-x) WITH NOMINAL COMPOSITION (123+211) BY LIQUID PHASE SINTERING<br>液相烧结制备织构（123＋211）的YBa2Cu3O7—x超导体
%A FAN Yongnian
%A TANG Baozhen
%A QIAO Guiwen International Centre of Materials Physics
%A <br>樊永年
%A 汤宝珍
%A 乔桂文
%J 金属学报
%D 1993
%I 
%X To eliminate the deposition along BaCuO_2 grain boundaries, the 211 (Y_2Ba_2CuO_5) powder was properly doped to the 123 (YBa_2Cu_3O_(7-x) compounds. Sufficient time for mass transfer along a-b plane was allowed by lowering the cooling rate nearby the temperature of peritectic transformation. Since the plane a-b is the fastest growing one, the length of grains is controlled by the rate of mass transfer. XRD, SEM and EDXA analyses revealed that the grains are strip-shaped, their orientation is perpendicular to c-axis and par- allel to surface a-b plane. Thus, the compound 123 (YBa_2Cu_3O_(7-x) has a strong textural structure.
%K liquid phase sintering
%K texture
%K peritectic transformation
%K YBa_2Cu_3O_(7-x)
%K Y_2Ba_2CuO_5
%K directional solidification<br>烧结材料
%K 液相
%K 定向凝固
%K 超导体
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=9D6A0706ECC1073363976A540950E996&yid=D418FDC97F7C2EBA&vid=771469D9D58C34FF&iid=F3090AE9B60B7ED1&sid=117F81797AB182FC&eid=C753EB8AC8F551B9&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=4