SnO_(2)增强相对AgCuOIn_(2)O_(3)电触头材料显微组织与性能的影响  

Effect of SnO_(2) Reinforcement Phase on Microstructure and Properties of AgCuOIn_(2)O_(3)Electrical Contact Materials

作　　者：胡晨 陈力[1] 张晓 李金涛 刘满门 王丽慧 周晓龙[1] Hu Chen;Chen Li;Zhang Xiao;Li Jintao;Liu Manmen;Wang Lihui;Zhou Xiaolong(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China;Kunming Institute of Precious Metals,Kunming 650106,China;Guilin Key Laboratory of Microelectronic Electrode Materials and Biological Nanomaterials,China Nonferrous Metals(Guilin)Geology and Mining Co.,Ltd,Guilin 541004,China)

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]稀贵金属综合利用新技术国家重点实验室,云南昆明650106 [3]中国有色桂林矿产地质研究院有限公司桂林市微电子元件电极材料与生物纳米材料重点实验室,广西桂林541004

出　　处：《稀有金属材料与工程》2022年第1期66-73,共8页Rare Metal Materials and Engineering

基　　金：Key Project of Yunnan Province Science and Technology Plan (2017FA027);National Natural Science Foundation of China (51361016)。

摘　　要：采用反应合成法结合塑性变形工艺制备了不同SnO_(2)含量的AgCuOIn_(2)O_(3)SnO_(2)电触头材料,利用扫描电镜和金相显微镜表征了材料的微观形貌及显微组织,分析对比了不同SnO_(2)含量的材料金相组织及其增强相的分布均匀性,并利用X射线衍射分析了材料的物相结构。测量了材料的抗拉伸强度、硬度、电阻等性能。结果表明:添加适量的SnO_(2)能使组织中的孔隙尺寸缩小、其他缺陷明显减少。氧化物弥散分布在银基体中,极大地改善了AgCuOIn_(2)O_(3)电触头材料的显微组织均匀性。在SnO_(2)含量不变时,材料的电阻率随塑性变形程度增加而有所降低;随着SnO_(2)含量增多,电阻率呈现先降低后升高的趋势,最后趋于定值,约为2.4μΩ·cm。添加SnO_(2)后各试样材料的硬度均显著升高,SnO_(2)含量为1%(质量分数)的材料具有最优的抗拉伸强度和延伸率。AgCuOIn_(2)O_(3)SnO_(2) electrical contact materials with different SnO_(2) contents were prepared by reaction synthesis coupled with plastic deformation process.The morphology and microstructure of the AgCuOIn_(2)O_(3)SnO_(2) contact materials were characterized by scanning electron microscopy and optical microscope.The distribution uniformity of the metallographic structure and the reinforcement phase of the materials with different SnO_(2) contents was analyzed.The phase structure of the materials was measured by X-ray diffraction,and the tensile strength,hardness,and resistivity of the materials were also measured.Results show that the appropriate SnO_(2) addition can significantly decrease the pore size and reduce other defects in the structures.The diffusion of oxides in the silver matrix greatly improves the microstructure uniformity of AgCuOIn_(2)O_(3) contact materials.When the SnO_(2) content is fixed,the resistivity of materials is decreased with conducting the plastic deformation;with increasing the SnO_(2) content,the resistivity is decreased firstly,then increased,and finally turns to be stable at 2.4μΩ·cm.The hardness of the materials is increased significantly after SnO_(2) addition.The material with 1wt%SnO_(2) shows the optimal tensile strength and elongation.

关 键 词：反应合成法 AgCuOIn_(2)O_(3)SnO_(2)显微组织 性能 

分 类 号：TB34[一般工业技术—材料科学与工程]