金刚石与磨料磨具工程2024，Vol.44Issue(2)：169-178,10.DOI:10.13394/j.cnki.jgszz.2023.0062
金刚石粒径对金刚石/Cu-B合金复合材料热物理性能的影响
Effect of diamond particle size on thermophysical properties of diamond/Cu-B alloy composites
摘要
Abstract
Using copper-boron alloy as the metal matrix and different-sized diamond particles through 110 μm,230 μm to 550 μm as reinforcement,the diamond/copper-boron alloy composites were prepared via gas pressure infiltration technology under 1 100 ℃ and 10 MPa gas pressure.The influences of the size of diamond particles on the configura-tion,interlayer phase distribution,and thermophysical properties of the composites were investigated.The results show that with the increase of particle size,there is a benefit of better interface bonding,and the thermal conductivity of the diamond/copper-boron composite is enhanced while the thermal expansion coefficient decreases.When the diamond particle size is 500 μm,the best performance of the composite is obtained.The thermal conductivity is 680.3 W/(m·K),and the thermal expansion coefficient increases from 4.095×10-6 K-1 to 7.139×10-6K-1.关键词
热导率/金刚石粒径/气压熔渗/热膨胀系数/金刚石/Cu-B复合材料Key words
thermal conductivity/diamond particle/gas pressure infiltration method/thermal expansion coefficient/diamond/copper-boron composite material分类
化学化工引用本文复制引用
王熹,余志明,魏秋平,康翱龙,焦增凯,康惠元,吴成元,周科朝,马莉,邓泽军,王一佳..金刚石粒径对金刚石/Cu-B合金复合材料热物理性能的影响[J].金刚石与磨料磨具工程,2024,44(2):169-178,10.基金项目
国家"十四五"重点研究发展计划(2021YFB3701800) （2021YFB3701800）
国家自然科学基金(52071345,51874370,51601226) （52071345,51874370,51601226）
广东省"十三五"重点研究开发项目(2020B01085001) （2020B01085001）
湖南省高新技术产业科技创新引领计划(2022GK4037,2022GK4047) （2022GK4037,2022GK4047）
湖南省教育厅资助科研项目(20C0037). （20C0037）
