片式电阻浆料用钌酸铅粉的制备

Preparation of Ruthenium Lead-Power for Resistor in Plate Resistance

以超细氧化钌粉、氧化铅为原料,选用特定的焙烧工艺和球磨工艺,利用固相合成法,并通过烘干和破碎处理得到了粒度分布较窄、性能稳定的粉末,满足了片式电阻浆料的使用要求。采用湿法激光粒度仪测试钌酸铅粉的粒度分布与平均粒径,用扫描电子显微镜(SEM)分析钌酸铅粉的形貌、粒径和团聚状态,用X射线衍射仪(XRD)检测粉体的晶相。并简要讨论了影响钌酸铅粉制备过程的各类因素。

With ultrafine ruthenium oxide powder,lead oxide as raw material,choose the specific roasting and ball grinding process,the method using solid consistency,and through drying and crushing processing,stable performance,with narrower particle size distribution of powder,meet the demands for the chip resistor paste.Wet method is used to test laser granulometer ruthenium acid lead powder particle size distribution and average particle size,by scanning electron microscope(SEM)analysis of ruthenium acid lead powder morphology,particle size and reunion,using X-ray diffraction(XRD)instrument detection of powder crystal phase.The various factors affecting the preparation of lead-powder were briefly discussed.