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Aging Effect on Lanthanum Doped Ferroelectric Lead Titanate Ceramics Jin Xueqin1,Zhu Yudan1,Zhu Jie1,Sun Dazhi1 (1.Department of Chemistry, Shanghai Normal University, Shanghai 200234, China... transition temperature in lead titanate doped with lanthanum increases during aging at ferroelectric phase was reported. It is well known that lattice defects, such as vacancies and solute atoms......
of lead paste sample (mass fraction, %) 控制Diamond TG/DTA热分析仪的温度为范围25~800 ℃,升温速率5 ℃/min对样品进行热质量损失分析.XRD与FSEM表征分别采用荷兰的X’Pert PRO型X射线衍射仪和Sirion 200,XRD实验条件:铜靶材,Ni滤波,管压40 kV,管流40 mA.表面观测及能谱分析采用SEM/EDS检测仪.柠檬酸铅...檬酸铅的XRD谱 Fig. 1 XRD patterns of different lead citrate filtering immediately after leaching(a), recrystallization (55℃, 4 h)(b), lead citrate purchased from Alfa Aesar China (Tianjin) Co., Ltd(c......
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Growth and Application of Chalcogenides of Lead and Related Compounds王海龙,朱筱春,张位在,曹根娣,陈鹤明,沈玉华摘 要:<正> Large grain, low-dislocation, high-quality single crystals of various Pb-salt compounds have been grownreproducibly by the Horizontal Unseeded Vapor Growth (HUVG) technique. The Tunable Diode Lasers withbetter performance have been made......
Alkaline pressure oxidative leaching of bismuth-rich and arsenic-rich lead anode slimeYun-long He1,Rui-dong Xu1,2,Shi-wei He1,Han-sen Chen1,Kuo Li1,Yun Zhu1,Qing-feng Shen11. Faculty of Metallurgical..., and lead from bismuth-rich and arsenic-rich lead anode slime for bismuth, gold, and silver enrichment.The effects of the temperature, liquid-to-solid ratio, leaching time, and reagent concentration......
Lead removal from aqueous solution by employing natural bruciteLei Shao, Jiwen Fu, Yue Zhou, Jianfeng Chen, and Shouci LuResearch Center of the Ministry of Education for High Gravity Engineering and Technology, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaCivil and Environmental Engineering School, University of Science and Technology Beijing......
国内某炼铅企业.含铅玻璃化学组成如表1所列,高铅渣化学组成如表2所列.对处理后的含铅玻璃和高铅渣进行XRD分析,其结果如图1所示. 表1 含铅玻璃化学成分 Table 1 Chemical compositions of lead glass (mass fraction, %) 表2 高铅渣化学成分 Table 2 Chemical compositions of high lead slag (mass fraction, %) 图1 含铅玻璃和高铅渣的XRD谱 Fig. 1 XRD patterns of funnel glass and high lead slag 从XRD分析结果可以看出,CRT锥玻璃为无定形组织,在20°~40°之间出现鼓包,呈现出典型的非晶状态.原始高铅渣的物相组成是以硅酸铅......
J. Cent. South Univ. (2012) 19: 2620-2626 DOI: 10.1007/s11771-012-1319-4 Chemical fractions and potential mobility of lead in soils irrigated by sewage in Pearl River Delta, South China HUANG... for Pb in groundwater. In addition, soil particles, pH and Fe2O3 play an important role in the impact of mobility and chemical fractions of Pb in soils. Key words: chemical fractions; mobility; lead......
Trans. Nonferrous Met. Soc. China 24(2014) 884-892 Morphological and crystallographic characteristics of lead powder obtained by electrodeposition from an environmentally friendly electrolyte D... 1a, Belgrade, Serbia Received 10 July 2013; accepted 16 September 2013 Abstract: Lead powder obtained by potentiostatic electrodeposition from alkaline electrolyte, based on hydroxide ions......