CAJ | 학술논문

文章介绍了采用高能球磨法制备Cu-Zr复合粉体,采用SEM、XRD等方法研究粉体的机械合金化过程,并进一步研究了其冷压成形和烧结过程.结果表明:随着球磨时间的延长,一部分Zr固溶到Cu中,形成Cu-Zr过饱和固溶体,另一部分则与铜生成铜锆金属间化合物;粉体由片状转变为近球状,显微硬度逐渐增加;当球磨超过15 h后,复合粉体硬化,为了得到某一密度的压坯,需要更高的压制压力.
문장개소료채용고능구마법제비Cu-Zr복합분체,채용SEM、XRD등방법연구분체적궤계합금화과정,병진일보연구료기냉압성형화소결과정.결과표명:수착구마시간적연장,일부분Zr고용도Cu중,형성Cu-Zr과포화고용체,령일부분칙여동생성동고금속간화합물;분체유편상전변위근구상,현미경도축점증가;당구마초과15 h후,복합분체경화,위료득도모일밀도적압배,수요경고적압제압력.
Cu-Zr powders were prepared by high-energy ball milling the Cu and Zr elemental powders. The mechanical alloying process and the powder characteristics were studied by means of SEM and XRD and the pressing-sintering process of the milled powders was also preliminarily studied. The results indicate that during ball milling, Zr atoms and Cu atoms form supersaturated solid solutions and Cu-Zr alloy intermetallic compound. The morphology of the milled powders are of near ball shape different from the platelike shape of the powders at the early milled stage. Meanwhile, the microhard-ness of the milled powders increases with the milling time. As for the Cu-Zr powder ball milled for 15 hours, much higher pressure is required to obtain a higher pressing density duo to powder hardening in the ball milling process.