高能球磨纳米镍粉制备块体材料的研究  

Study on Bulk Nanocrystalline Ni Prepared by High Energy Ball Milling

作　　者：巴志新[1] 路承杰[2] 戴玉明[1] 

机构地区：[1]南京工程学院材料工程学院,江苏南京211167 [2]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《南京工程学院学报（自然科学版）》2007年第3期40-44,共5页Journal of Nanjing Institute of Technology(Natural Science Edition)

基　　金：南京工程学院科研基金项目"块体纳米材料制备及力学性能研究"(KXJ0610)

摘　　要：采用高能球磨法制备了纳米晶Ni粉末,对纳米晶粉末进行预压烧结,获得纳米晶镍块体材料.采用显微分析方法研究了纳米晶粉末和块体材料的显微组织结构.试验结果表明,高能球磨所得镍粉平均晶粒尺寸为10 nm;预压烧结块体的平均晶粒尺寸在100 nm以下;块体相对致密度在烧结温度为0.6Tm时达到最大值.Nanocrystalline Ni powder was produced by utilizing high energy ball milling and then sintered into Nanocrystalline Nickel bulk materials. Microstructure investigations were carried out to examine the structure of nanocrystalline powder and bulk. The results corroborate that the average grain size of the high energy ball milled Ni powder is 10 nm; pre-pressure sintering block in average grain size is less than 100 nm; bulk density relative to the sintering temperature reaches its maximum value at 0.6Tm.

关 键 词：纳米块体 高能球磨 镍 

分 类 号：TG146.2[一般工业技术—材料科学与工程]