二次烧结制备W-15wt％Cu复合材料  

Fabrication of W-15wt%Cu Composite Materials with Two Steps Sintering

作　　者：杨梨容[1] 魏成富[1,2] 栾道成[1] 王正云[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039 [2]绵阳师范学院,四川绵阳621000

出　　处：《热加工工艺》2009年第10期111-113,共3页Hot Working Technology

基　　金：四川省教育厅自然科学基金资助项目(0321182);四川省重点攻关资助项目(0421015)

摘　　要：将W-15wt%Cu混合粉末在行星式高能球磨机上进行机械合金化(MA),球磨60h后复合粉末中弥散均匀分布的钨晶粒平均尺寸达到39.7nm。对此纳米复合粉末采用二次烧结和一次烧结两种工艺进行烧结。结果表明,相对于一次烧结工艺,采用二次烧结工艺制备出的烧结体的致密度显著提高,达到98.84%,且W、Cu两相分布更均匀,孔隙率更低。W-15wt% Cu nanocomposite powders were made by mechanical alloying. The results show that the tungsten particles have an average grain size of 39.7 nm. High density W-15wt%Cu material is fabricated with two steps sintering. Compared with the one step sintering, the relative density of W-15wt%Cu is up to 98.84% with two steps sintering, the tungsten and copper are more uniformly distributed and the porosity is lower.

关 键 词：W-15wt%Cu 复合材料 机械合金化 二次烧结 

分 类 号：TF124.3[冶金工程—粉末冶金]