材料期刊网

Physical Properties and Regulating Mechanism of FluorideFree and Harmless B2O3Containing Mould Flux

LI Guirong , WANG Hongming , DAI Qixun , ZHAO Yutao , LI Jingsheng

钢铁研究学报(英文版)

The flux agents in common mould fluxes were fluoride and sodium oxide, which would do great harm to environments. B2O3 was selected as flux. The physical properties of B2O3containing mould fluxes were studied. The corresponding physical properties of 3791%CaO4309%SiO25%Al2O35%MgO2%Li2O7%B2O3 mould fluxes were as follows: the melting point was 909 ℃, the flowing temperature was 1 160 ℃, the viscosity and surface tension at 1 300 ℃ were 04 Pa·s and 032 N/m respectively, which could meet the demands for certain kinds of steels for mould fluxes in continuous casting.

关键词: B2O3containing mould flux;fluoridefree flux;harmless flux;physical property

CSD-La3TaO7薄膜外延生长行为

王耀 , 李成山 , 于泽铭 , 冯建情 , 金利华 , 王辉 , 张平祥

稀有金属

研究CSD技术制备La3TaO7 (LTO)缓冲层过程中前驱液的热分解行为以及热处理工艺对薄膜取向生长的影响,通过选取恰当的LTO前驱液以及快速升温热处理的方法最终获得了良好c轴织构的LTO薄膜.

关键词: 涂层导体 , 缓冲层 , 化学溶液沉积

Bi3+,Eu3+,Tb3+掺杂Lu3TaO7的发光性能研究

刘文鹏 , 张庆礼 , 杨华军 , 周鹏宇 , 孙敦陆 , 高进云 , 谷长江 , 罗建乔 , 王迪 , 殷绍唐

量子电子学报 doi:10.3969/j.issn.1007-5461.2011.02.018

采用固相反应法制备了Bi3+、Eu3+、Tb3+掺杂的Lu3TaO7.测量了样品的X射线衍射谱、激发和发射光谱及荧光衰减曲线.三种离子掺杂的Lu3TaO7均呈现出强的荧光发射,其中Bi3+具有峰位在431 nm处的一强发射宽带,衰减寿命为16.8μs,Eu3+、Tb3+则表现出稀土离子的特征锐发射峰,衰减寿命分别为1.26 ms和1.20 ms.因此,它们均是具有潜在应用前景的重闪烁体材料.

关键词: 材料 , 闪烁体 , Lu3TaO7 , 发光

Professor XU Zhong-yu and his research activities

新型炭材料

关键词:

1998 COMPREHENSIVE TABLE OF CONTENTS

中国腐蚀与防护学报

N。1Atmospheric Corrosivlty for Steels………………………………………………… .LIANG Caideng HO[I i。-tat（6）Caustic Stress Corrosion Cr。king of Alloy 800 Part 2.The Effect of Thiosul执e……………………………………… KONG De-sheng YANG Wu ZHAO Guo-zheng HUANG De.ltL。ZHANG Yu。。he CHEN She。g-bac（13）SERS slid E16CttOCh6iniC81 Stlldy Of Illhibit1Oli M6ch＆tllsth Of ThlollY68 Oil ITOll ID H....

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Preface to Special Issue on Photocatalysis for celebrating the 20th anniversary of Professor Jimmy C. Yu’s return to Hong Kong and leading photocatalytic research there

催化学报 doi:10.1016/S1872-2067(15)61006-3

关键词:

一种基于锡锑氧化物的透明PN结及整流特性

季振国 , 周荣福 , 毛启楠 , 霍丽娟 , 曹虹

无机材料学报 doi:10.3724/SP.J.1077.2009.09217

利用反应磁控溅射法制备了半导体锡锑氧化物薄膜 (TAO). 根据霍尔效应测试结果，当Sn/Sb 原子比处于0.22~0.33范围内时，TAO薄膜是p型导电的，在此范围之外，TAO薄膜是n型导电的. 光学带隙测量结果表明,不同Sn/Sb比的TAO薄膜的禁带宽度基本相同(~3.9eV).构造了一个全透明的PN结，其中n区为Sn/Sb原子比为0.5的TAO薄膜， p区为Sn/Sb原子比为0.33的TAO薄膜.n区TAO的电极用铟锡氧化物（ITO），p区TAO的电极用Cu薄膜.实验结果表明，由于两种导电类型的TAO薄膜具有相同的禁带宽度，上述透明PN结构具有典型的准同质PN结的整流特性.

关键词: 透明半导体薄膜 , antimony-tin oxide , PN junction

一种基于锡锑氧化物的透明PN结及整流特性

季振国 , 周荣福 , 毛启楠 , 霍丽娟 , 曹虹

无机材料学报 doi:10.3724/SP.J.1077.2009.09217

利用反应磁控溅射法制备了半导体锡锑氧化物薄膜 (TAO). 根据霍尔效应测试结果,当Sn/Sb 原子比处于0.22~0.33范围内时,TAO薄膜是p型导电的,在此范围之外,TAO薄膜是n型导电的. 光学带隙测量结果表明,不同Sn/Sb比的TAO薄膜的禁带宽度基本相同(～3.9eV).构造了一个全透明的PN结,其中n区为Sn/Sb原子比为0.5的TAO薄膜, p区为Sn/Sb原子比为0.33的TAO薄膜.n区TAO的电极用铟锡氧化物(ITO),p区TAO的电极用Cu薄膜.实验结果表明,由于两种导电类型的TAO薄膜具有相同的禁带宽度,上述透明PN结构具有典型的准同质PN结的整流特性.

关键词: 透明半导体薄膜 , 锡锑氧化物 , PN结

Noncollinear magnetic ground state of PrFeAsO

Europhysics Letters

Noncollinear magnetic investigations of the ground state in PrFeAsO have been performed by the density-functional theory. We calculated the total energy and made structure optimization, and the electronic density of states of PrFeAsO was analyzed. There are three different magnetic structures in PrFeAsO defined by experiments. Based on these magnetic structures, we studied four collinear and four noncollinear cases. The ground state is found to take the ordering proposed by Zhao, in which the FeAs plane is of stripe antiferromagnetism and Pr spins are perpendicular to Fe spins. The electronic density of states indicates that for PrFeAsO the increase of the electron Coulomb interaction leads to a decrease in conductivity. Copyright (C) EPLA, 2011

关键词: high-temperature superconductivity;phase-diagram;oxypnictides;instability

Improved Nonlinear Equation Method for Numerical Prediction of Jominy EndQuench Curves

SONG Yuepeng , LIU Guoquan , LIU Shengxin , LIU Jiantao , FENG Chengming

钢铁研究学报(英文版)

Without considering the effects of alloying interaction on the Jominy endquench curves, the prediction results obtained by YU Baihai′s nonlinear equation method for multialloying steels were different from those experimental ones reported in literature. Some alloying elements have marked influence on Jominy endquench curves of steels. An improved mathematical model for simulating the Jominy endquench curves is proposed by introducing a parameter named alloying interactions equivalent (Le). With the improved model, the Jominy endquench curves of steels so obtained agree very well with the experimental ones.

关键词: Jominy endquench curve;nonlinear equation method;alloying interaction parameter;computer simulation