材料期刊网

SNAP-ACTION PHASE TRANSFORMATION IN TWO-WAY SHAPE MEMORY Ni-Ti ALLOY

LUO Laizhong ZHANG Jinxiu LIN Guangming Zhongshan University , Guangzhou , 510275 , China Lecturer , Dept.of Physics and Institute of Material Science , Zhongshan University , Guangzhou , 510275 , China

金属学报(英文版)

The snap-action behavior of a Ni-Ti alloy disc which is controlled by combination of a nonlinear stress field and temperature has been studied.After treatment for two-way shape memory,all shape memory strain of snap-action finishes abruptly at a certain temperature within an interval of less than 1 ms.The results of resistance measurement and in-situ X-ray diffraction indicate that the snap-action strain is mainly resulted from the snap-action β (?)R transformation.

关键词: shape memory alloy , null , null

Jian ZHANG/Langhong Lou

材料科学技术（英文）

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University of Science and Technology Beijing

JIA Shizhen University of Science and Technology Beijing , China.

材料科学技术（英文）

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Department of Metallurgy and Materials Engineering of Chongqing University

YAN Guangting Chongqing University , Sichuan , China.

材料科学技术（英文）

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Institute of Materials Science at Jilin University——A Brief Overview

WANG Yuming Institute of Materials Science , Jilin University , Changchun , 130023 , China

材料科学技术（英文）

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表面包覆法合成的LiN0.8Co0.2O2材料的结构表征

刘欣艳 , 赵煜娟 , 夏定国

功能材料

LiNi0.8Co0.2O2是锂离子电池界公认的最有希望取代商业化正极材料LiCoO2的新型正极材料之一.本文所研究的复合正极材料LiNi0.8Co0.2O2是由细小的晶粒构成的球形颗粒,单一相,属于R3m空间群.对复合材料LiNi0.8Co0.2O2的Co-K和Ni-K的XANES分析可知,在600～850℃范围温度对于钴元素的影响不明显,而对于镍元素的影响比较显著,随着Ni-K边位置向高能量移动LiNi0.8Co0.2O2正极材料的放电容量升高.复合材料LiNi0.8Co0.2O2和LiNiO2的Ni-K边XANES相似,表明少量钴的引入对晶体结构的改变不是太多,但是峰的强度较高和峰的位置向高能量移动,表明钴Co对Ni的局域结构进行了调制.

关键词: LiNi0.8Co0.2O2 , XANES , 正极材料 , 局域结构

Abstracts of papers from Journal of University of Science and Technology Beijing

稀有金属（英文版）

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RF deflecting cavity design for bunch length measurement of photoinjector at Tsinghua University

中国物理C

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Design of an MeV ultra-fast electron diffraction experiment at Tsinghua university

中国物理C

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Huazhong University of Science and Technology(H.U.S.T)

材料科学技术（英文）

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