亚微米活化Mo-15Cu合金晶间反应机制  

Intergranular Reaction Mechanism of Submicron-Activated Mo-15Cu Alloy

作　　者：王敬泽[1] 尹佳庆 崔建文 常晶 于彦东[1] 孙云龙 Wang Jingze;Yin Jiaqing;Cui Jianwen;Chang Jing;Yu Yandong;Sun Yunlong(School of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150040,China;College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150006,China)

机构地区：[1]哈尔滨理工大学材料科学与工程学院,哈尔滨150040 [2]哈尔滨工程大学智能科学与工程学院,哈尔滨150006

出　　处：《稀有金属材料与工程》2023年第2期448-453,共6页Rare Metal Materials and Engineering

基　　金：Project supported by the Reform and Development of Local Colleges and Universities of the Central Government of China(323210001);Project supported by the Harbin Talents of China(2015RAQXJ036)。

摘　　要：为了研究具有亚微米组分的钼铜粉末烧结时的晶间反应机制,采用亚微米活化层法制备了一种具备晶间反应层的钼铜复合材料。采用X射线衍射仪(XRD)、扫描电镜(SEM)、能谱仪(EDS)、透射电镜(TEM)、高分辨透射电镜(HRTEM),对Mo-15Cu合金组织形貌、连接和结构特征进行了表征。研究了亚微米活化层对钼铜复合材料晶间反应的影响。结果表明,添加8%(质量分数)亚微米粉,可形成厚度约0.5μm纳米活化层。Mo亚微米颗粒通过流动、扩散,改变晶间反应机制,形成了真正意义上的晶间反应层,厚度约为5 nm,实现了冶金结合。In order to investigate the intergranular reaction mechanism during sintering of molybdenum-copper powders with submicron components, a Mo-15Cu composite with an intergranular reaction layer was prepared by a submicron-activated layer method. The histomorphology, connectivity and structural characteristics of Mo-15Cu alloy were characterized by X-ray diffractometer(XRD), scanning electron microscope(SEM), energy dispersive spectrometer(EDS), transmission electron microscope(TEM), and high-resolution transmission electron microscope(HRTEM). The effect of submicron-activated layers on the intergranular reaction of Mo-15Cu composites was investigated. The results show that the submicron-activated layer with a thickness of 0.5 μm is formed by adding 8wt% submicron powder. The submicron-sized Mo particles change the intergranular reaction mechanism through flow and diffusion, forming an intergranular reaction layer with a thickness of about 5 nm and achieving metallurgical bonding.

关 键 词：钼铜伪合金 纳米孪晶 晶间反应层 亚微米活化层 冶金结合 

分 类 号：TB331[一般工业技术—材料科学与工程]