超高压处理对熔渗态CuW合金电阻率及热扩散系数的影响  

Effect of Ultra-high Pressure Treatment on Resistivity and Thermal Diffusion Coefficient of Infiltrated CuW Alloy

作　　者：李媛媛[1] 张大磊[1] LI Yuanyuan;ZHANG Dalei(Department of Electromechanical Engineering, Qinhuangdao Vocational Technological College, Qinhuangdao 066100, China)

机构地区：[1]秦皇岛职业技术学院机电工程系,河北秦皇岛066100

出　　处：《铸造技术》2018年第6期1352-1354,共3页Foundry Technology

摘　　要：在(2~5)GPa压力作用下,对熔渗态Cu W合金进行950℃保温20 min的高温高压处理,探讨了超高压处理对Cu W合金热扩散系数及电阻率的影响。结果表明,2 GPa×950℃的高温高压处理能增大Cu W合金的热扩散系数,降低电阻率;但进一步提高压力至5 GPa,合金的热扩散系数及电阻率变化不大。合金经2 GPa,950℃保温20 min处理后的热扩散系数和电阻率分别为0.518 7 cm^2·s^(-1)和4.532×10^(-8)Ω·m,分别较熔渗态合金热扩散系数和电阻率增大和减小了19.96%和8.96%。Infiltrated CuW alloy was treated at 2-5 GPa and 950℃ for 20 minutes, the effect of ultra-high pressure treatment on thermal diffusion coefficient and resistivity of the alloy were studied. The results show that the thermal diffusion coefficient and decrease the resistivity of the alloy can be increased with 2 GPa and 950℃ high temperature and high pressure treatment; but further raise the pressure to 5 GPa, the change of the thermal diffusion coefficient and the resistivity of the alloy is unobvious. After treatment at 2 GPa and 950 ℃ for 20 min, the thermal diffusivity coefficient and resistivity of the alloy is 0.518 7 cm2.s1 and 4.532×10^-8 Ω .m, which is increases and decreases by 19.96% and 8.96% compare to the infiltrated alloy, respectively.

关 键 词：熔渗态CuW合金 超高压处理 热扩散系数 电阻率 

分 类 号：TG132[一般工业技术—材料科学与工程]