粉末冶金技术2012，Vol.30Issue(2)：112-117,6.
W-10Cu超细复合粉末的烧结致密化及其制品热学性能研究
Densification of W-10Cu ultrafine composite powder and the resulted thermal properties of sintered parts
摘要
Abstract
W-lOCu is one of the most widely used materials for thermal sink applications. The sinterability of this material is, however, not enough for reaching high density with normal powder. An in-house developed W-lOCu ultrafine composite powder has been employed for MIM. The W-lOCu parts sintered at 1 400 1C have exceeded relative density of 99%. The microstructure of sintered W-lOCu is homogenous and grain size for W is about 2 - 3 |im. Furthermore, the sintered W-Cu composite exhibits excellent thermal conductivity of 215W/(m ? K), and the coefficient of thermal expansion is between 6.4 X 10"' -7. 8 x 10~'K"' in the temperature range of 251 to 600 X. A comparison between W-lOCu MIM parts and Cu infiltrated products in microstructure and properties has been presented.关键词
超细W-Cu复合粉末/金属注射成形/烧结活性Key words
ultrafine W-Cu composite powder/ metal injection molding/ sinterability引用本文复制引用
曾雄,陈小华,于洋,许龙山,宋久鹏..W-10Cu超细复合粉末的烧结致密化及其制品热学性能研究[J].粉末冶金技术,2012,30(2):112-117,6.基金项目
国家自然科学基金资助项目(50972043,51101131) （50972043,51101131）
湖南省科技计划项目(2010FJ3151) （2010FJ3151）
福建省自然科学基金资助项目(2010J05124) （2010J05124）
