摘要
研究热导管铜粉的松装密度、粉末粒度、粉末粒径分布对铜粉烧结的毛细结构体断裂强度、孔隙率、毛细力吸水通量的影响。结果表明:在烧结温度为980℃,烧结时间60 min的条件下松装烧结所得铜热导管毛细结构体综合性能良好,当铜粉松装密度2.1 g/cm^3,粒径范围100~250μm,其中粒径150~250μm的质量分数为40%~70%时,铜粉烧结毛细结构体的断裂强度为9.11~9.67 MPa,孔隙率52.6%~53.8%,毛细力吸水通量1.30×10^(-3)~1.42×10^(-3) g/(s·mm^2)。
The effects of apparent density, particle size and distribution of copper powder on the properties of sintered copper compacts with capillary structure, such as fracture strength, porosity and capillary water permeability were studied. The results showed that the copper compacts with capillary structure sintered at 980 ℃ for 60 min, by copper powder with apparent density of 2.1 g/cm3, particle size of 100-250μm, in which mass fraction of 150-250 μm copper powder is 40%-70%, should get the optimal properties with the porosity of 52.63%-53.8%, fracture strength of 9.11-9.67 MPa, water permeability of 1.30 × 10^-3-1.42 × 10^-3 g/（S.mm2）.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2016年第3期451-456,共6页
Materials Science and Engineering of Powder Metallurgy
基金
国家发改委重点项目产业化专项基金(湘发改工[2012]-1123)
关键词
热导管
铜粉
断裂强度
孔隙率
毛细力
吸水通量
heat pipe
copper powder
fracture strength
porosity
capillary force
water permeability
