高能球磨工艺对CNTs／Cu复合粉末与材料性能影响  

Effect of Technology of Carbon Nanotubes Reinforced Copper Matrix （CNTs/Cu） Composite Powders and Materials by High Energy Milling

作　　者：余明俊[1] 蔡晓兰[1] 蒋太伟[1] 周蕾[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《纳米科技》2014年第2期32-37,共6页

摘　　要：采用卧式高能球磨和机械合金化工艺制备了纳米碳管增强铜基（CNTs／Cu）复合粉体，并采用真空冷压烧结制备出CNTs／Cu复合材料，研究了高能球磨工艺参数对复合粉体与材料性能的影响规律，包括球磨时间和搅拌轴转速对复合粉体粒度、松装密度以及力学性能的影响，结果表明，高能球磨技术有利于CNTs与铜的界面结合和机械合金化。高能球磨的最佳工艺条件：搅拌轴线速度4．2／5．4m／s，球磨时间2～4h，得到的CNTs／Cu复合粉体的中位径为11．76μm，松装密度为1．356g／cm3。CNTs／Cu复合材料的致密度到达94％，硬度到达92HB，抗拉强度到达138Mpa。High energy milling （HEM） and mechanical alloying was used to prepare Carbon nanotubes reinforced copper matrix （CNTs/Cu） composite powders, the CNTs/Cu composite material was prepared by the cold-pressing sintering technology. The effect of operation parameter of HEM for the composite flake performance was researched, including the particle size and bulk density of composite flake effected by the milling time and the rotational speed . The results indicated that the HEM technique was conducive to the interface bonding between CNTs and Cu and mechanical alloying. The optimum conditions of HEM of the rotational speed was 4.2/5.4m/s and the milling time was 2-4hour. The particle size distributiong （D50） was 11.76 μm and the bulk density was 1.356 g/cm3 of CNTs/Cu composite powder. The density was 94%; the microhardness was 92HB and the tensile strength was 138 MPa of CNTs/Cu composite.

关 键 词：高能球磨 CNTS Cu复合粉体 材料 球磨参数 

分 类 号：TB33[一般工业技术—材料科学与工程]