摘要
采用熔渗法制备了钼渗铜材料。采用超声波探伤的方法对钼渗铜材料进行了无损检测,采用SEM和金相分析对钼渗铜材料进行了微观组织观察,分析了钼粉的粒度均匀性对钼渗铜钼材料组织的影响。研究结果表明:粉末粒度均匀性对钼骨架的渗铜性能有影响;粉末中存在的细颗粒较多或者有粉末团聚现象时,钼骨架局部细小孔隙聚集,铜难以渗入这些聚集的小孔隙,造成超声波探伤渗铜均匀性不佳;超声波探伤发现的“面积型渗铜不均”实际是“密集微孔聚集”。
Molybdenum infiltrated copper material was prepared by infiltration.Non destructive testing was conduted in molybdenum infiltrated copper materials using ultrasonic testing.The microstructure of molybdenum infiltrated copper material was observed by SEM and metallographic analysis.The influence of particle size uniformity on the microstructure of molybdenum infiltrated copper was analyzed.The results showed that the size uniformity of powder particle had an effect on the copperizing performance of molybdenum skeleton.When there are many fine particles in the powder or there is powder agglomeration phenomenon,local small pores in the molybdenum skeleton aggregate,making it difficult for copper to penetrate these aggregated small pores,resulting in poor uniformity of copper penetration in ultrasonic testing;the area type uneven copper infiltration discovered by ultrasonic testing is actually"dense micro pore aggregation".
作者
张丹华
张保红
林冰涛
唐亮亮
郭颖利
杜丽业
ZHANG Danhua;ZHANG Baohong;LIN Bingtao;TANG Liangliang;GUO Yingli;DU Liye(Advanced Technology&Materials Co.,Ltd.,Beijing 100081,China;ATTL(Beijing)Advanced Materials Co.,Ltd.,Beijing 100094,China)
出处
《中国钼业》
2023年第6期42-45,共4页
China Molybdenum Industry
关键词
钼粉
钼渗铜
粒度均匀性
探伤
微观组织
molybdenum powder
molybdenum infiltrated copper
particle size uniformity
ultrasoic testing
microstructure
