| 合金化成分对NiTi合金M_s点影响的正电子湮没研究 |
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| 引用本文： | 胡益丰,邓文. 合金化成分对NiTi合金M_s点影响的正电子湮没研究[J]. 低温物理学报, 2010, 0(6) |
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| 作者姓名： | 胡益丰 邓文 |
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| 作者单位： | 江苏技术师范学院数理学院;广西大学物理科学与工程技术学院; |
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| 基金项目： | 国家自然科学基金项目(批准号:50361002); 江苏省普通高校自然科学研究计划资助项目(批准号:07KJD430041)资助的课题 |
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| 摘 要： | 用双探头符合系统测量了金属Fe、Co、Ni、Al、Nb、Cu、Ti和NiTi合金的多普勒展宽谱,计算了其S参数和W参数,分析了合金中d-d金属键的作用.结果表明,当用Fe、Co或Al原子加入NiTi合金时,都将使合金中参与形成d-d金属键的d电子减少,从而使金属键减弱;而用Cu或Nb原子加入NiTi合金时,对合金中d-d电子作用的影响很小,合金中共价键的成分变化不大.在NiTi合金中加入合金化元素可以改变其电子结构,进而影响Ms点.
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| 关 键 词： | NiTi形状记忆合金 3d电子 正电子湮没 |
EFFECT OF ALLOYING ON M_s IN NiTi ALLOY STUDIED BY POSITRON ANNIHILATION SPECTROSCOPY |
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| HU Yi-feng DENG WenSchool of Mathematics , Physics,Jiangsu Teachers University of Technology,Changzhou ,College of Physics Science , Technology,Guangxi University,Nanning. EFFECT OF ALLOYING ON M_s IN NiTi ALLOY STUDIED BY POSITRON ANNIHILATION SPECTROSCOPY[J]. Chinese Journal of Low Temperature Physics, 2010, 0(6) |
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| Authors: | HU Yi-feng DENG WenSchool of Mathematics Physics Jiangsu Teachers University of Technology Changzhou College of Physics Science Technology Guangxi University Nanning |
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| Affiliation: | HU Yi-feng1 DENG Wen21School of Mathematics and Physics,Jiangsu Teachers University of Technology,Changzhou 213001,2College of Physics Science and Technology,Guangxi University,Nanning 530004 |
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| Abstract: | Doppler-broading spectrum of positron annihilation radiation of pure metals Fe,Co,Ni,Al,Nb,Cu,Ti and NiTi alloys have been measured by using 2-detector coincidence technique.And the S and W parameters of NiTi alloys are calculated.The results indicate that the addition of Fe,Co and Al into a NiTi alloy can decrease the d electrons,thus decreasing the fraction of the metallic bonds.When Cu and Nb are added into NiTi alloys,the effect in the interaction of d-d electrons is very small,as well as the proportion... |
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| Keywords: | NiTi shape memory alloy the 3d electrons positron annihilation |
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