摘要
通过使用XRD方法对热分解方法和碱体系还原得到的微米级银粉微观结构分析,结果表明微米级银粉都是纳米级的银晶体颗粒组成,且为面心立方结构;银粉晶粒表现为各向异性;制粉条件会影响银粉晶粒尺寸,升高热分解温度促使晶粒变小,机械整形和磨制促使晶粒变小;制备的银粉存在晶格畸变,均表现为晶格膨胀;制粉条件会影响晶面的布拉格衍射强度,且对不同晶面的影响程度存在差异。
XRD is applied to analyze crystal structure of multiple processed micrometer silver powder.Results indicate that micrometer size silver powder comprise of assembled nano size silver crystal,and it is a face centered cubic structure;the grain of silver powder is anisotropic;the conditions of pulverization will affect the grain size of silver powder.The grain size becomes smaller when the thermal decomposition temperature was increased and the mechanical plastic and the grinding make the grain smaller;the silver powder has lattice distortion,which all show lattice expansion;the powder condition will affect the prague diffraction intensity of the crystal surface,and the influence on the different crystal faces is different.
作者
董宁利
哈敏
郑伟
刘芳
DONG Ningli;HA Min;ZHENG Wei;LIU Fang(Ningxia CNMC New Material Co.Ltd,Ningxia Special Material Key Laboratory,Shizuishan 753000,Ningxia,China)
出处
《贵金属》
CAS
CSCD
北大核心
2018年第A01期92-96,共5页
Precious Metals
关键词
微米银粉
机械整形
球磨
热分解还原
液相还原
XRD
micrometer silver powder
mechanical plastic
fluid milling
thermal decomposition reduction
liquid-phase reduction
XRD
