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采用高能行星球磨机在纯铜基体表面制备了具有一定厚度的W颗粒增强复合层。采用SEM、EDS、XRD和显微硬度测试等分析测试技术分析了不同球磨时间下得到的复合层的沉积过程及复合层的显微组织及力学性能,并对复合层的形成机理进行了探讨。结果表明,颗粒增强复合层的厚度在一定球磨时间内达到最大值,之后不再随着球磨时间的增加而增加。然而适当延长球磨时间能改善复合层内增强颗粒和基体间的结合强度,并在一定程度上改善W层的致密度。
W particles reinforced composite layer with a certain thickness was prepared on pure copper matrix by high energy planetary ball mill. The deposition process of the composite layer and the microstructure and mechanical properties of the composite layer were analyzed by SEM, EDS, XRD and microhardness test. The formation mechanism of the composite layer was also discussed. The results show that the thickness of the particle reinforced composite layer reaches its maximum within a certain ball milling time and then no longer increases with the ball milling time. However, prolonging ball milling time can improve the bonding strength between reinforcing particles and matrix in the composite layer and improve the density of W layer to a certain extent.