Phase Constitution in Mixed Gd_2O_3 and B_4C by Sintering at High Temperature
Phase Constitution in Mixed Gd_2O_3 and B_4C by Sintering at High Temperature作者机构：School of Material and Metallurgy Northeastern University Shenyang 110004 China
出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)
年 卷 期：2005年第23卷第3期
页 面：345-348页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
基 金：theNationalStrategicS&Tof"TenthFive YearPlan" (2 0 0 1BA90 1A14 ) ScientificFoundationofLiaon ingProvince (2 0 0 2 10 2 3 )
主 题：high temperature sintering phase constitution gadolinium boride boron carbide gadolinium oxide rare earths
摘 要：The phase constitution in mixed Gd2O3 and B4C by sintering in graphite tube furnace at the temperature of 100～1489 ℃ in argon atmosphere was studied by means of XRD and TG-DTA. The results show that the impurity C reacts with O in the B4C at the temperature of 367～458 ℃. When the temperature is 800 ℃, Gd2O3 reacts with B4C, and the reaction products include GdB6, GdB4, GdBO3, GdBC and B. GdBC changes into GdB4 at 1200 ℃. When the temperature is 1470 ℃, GdB6 is obtained by the reaction of GdB4 with elemental B. The content of GdB6 is increasing with the prolonging time.
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