CAJ | 학술논문

以喷雾干燥钼粉为原料，将其在不同的温度下热处理，并对热处理过的粉末进行物理性能及组织形貌的测试分析。结果表明，喷雾干燥钼粉经1500℃以上高温热处理后，粉末中有机粘结剂被去除，粉末颗粒收缩，基本上为近球形，喷雾干燥颗粒之间有微弱连接，内部小颗粒明显粘结长大，粉末流动性好、松装密度高，适合于热喷涂制备涂层。
이분무간조목분위원료，장기재불동적온도하열처리，병대열처리과적분말진행물이성능급조직형모적측시분석。결과표명，분무간조목분경1500℃이상고온열처리후，분말중유궤점결제피거제，분말과립수축，기본상위근구형，분무간조과립지간유미약련접，내부소과립명현점결장대，분말류동성호、송장밀도고，괄합우열분도제비도층。
Molybdenum powders were prepared by spray-drying technique and were heat treated in different temper-atures. Physical property and pattern of the powders were analyzed. The results show that after heat treatment at a temperature higher than 1 500 ℃, the organic binder inside spray-dryed particles was removed, the particles of the spray-dryed powder shrink, but are nearly spherical shapes. The weak connection among spray-dryed particles was formed and the growth of the internal particles of spray-dryed particles was significant. The powder has good flow a-bility and high apparent density, which is suitable for thermal spraying.