摘要
为了探讨提高ＷＣｕ合金热导（ＴＣ值）的途径，采用４种不同纯度的铜，用熔渗工艺制备Ｗ１５Ｃｕ（质量分数，％）复合材料试样，并用ＣＯ２激光仪测试熔渗试样的ＴＣ值．研究发现，铜相纯度的微小变化对ＷＣｕ合金的ＴＣ值产生重大影响．并对铜相纯度影响ＷＣｕ合金ＴＣ值的机制进行分析和探讨．实验证明，用９９．９％的铜，并用适当的熔渗工艺，可以得到ＴＣ值为２００Ｗ·ｍ－１·Ｋ－１的Ｗ１５Ｃｕ合金．
Four kinds of metal coppers with different purity were used to make W Cu composites by infiltrating process. The thermal conductivities of the specimens were measured by laser flash technique. The experiment results show that a small variation in Cu purity has a dramatic effect on the thermal conductivity of the material. The mechanism of Cu purity's effect was analyzed. The experiments show that the thermal conductivity of 200 W·m -1 ·K -1 can be obtained for W 15Cu composite by using 99 9% pure copper and properly infiltrating process.
出处
《中南工业大学学报》
CSCD
北大核心
1999年第2期186-188,共3页
Journal of Central South University of Technology(Natural Science)
基金
湖南省科委重点科研资助
关键词
热导值
铜相纯度
钨铜合金
W Cu alloy
thermal conductivity
Cu phase purity
