%0 Journal Article
%T Reaction Mechanism of 0.80Pb(Mg1/3Nb2/3)O3 -0.20PbTiO3 Ceramics Prepared by Semichemical Method<br>半化学法制备0.80Pb(Mg1/3Nb2/3)O3-0.20PbTiO3陶瓷的反应机理
%A CUI Bin
%A YANG Zu-Pei
%A HOU Yu-Dong
%A SHI Qi-Zhen
%A TIAN Chang-Sheng
%A <br>崔斌
%A 杨祖培
%A 侯育冬
%A 田长生
%A 史启祯
%J 无机材料学报
%D 2002
%I Science Press
%X The semichemical method was developed for the synthesis of 0.80Pb(Mg1/3Nb2/3)O3-0.20PbTiO3(0.80PMN-0.20PT) ceramics with pure perovskite phase. The precursors were prepared by adding an aqueous Mg(NO3)2 solution rather than MgO to the alcoholic slurry of PbO, TiO2 and Nb2O5. The TG-DTG-DSC and XRD analysis show that the mechanism in this method is different from those of the known columbite or conventional mixed oxide method. Mg(NO3)2 reacts with PbO to form a intermediate of Pb6O5(NO3)2 at milling and calcinations process. The activated PbO and Pb3O4 by the intermediate reacted with Nb2O5 to form an unstable B-deficient pyrochlore structure of Pb3Nb2O8 , which progressively inserts magnesium oxide to transform into PMN-perovskite phase.
%K semichemical method
%K lead magnesium niobate
%K reaction mechanism
%K perovskite phase<br>半化学法
%K 反应机理
%K 陶瓷
%K 铌镁酸铅
%K 钙钛矿相
%K 钛酸铅
%K 含铅基弛豫铁电陶瓷
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=4A6473E45408BA4E&yid=C3ACC247184A22C1&vid=BCA2697F357F2001&iid=E158A972A605785F&sid=8CC50269EED5BB47&eid=195767709E606C85&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=4&reference_num=13