TiB_2-W-Cu复合材料的导电/抗烧蚀性能研究

Conductivity and anti-erosion property of TiB_2-W-Cu composites

通过"冷等静压成型-还原气氛烧结-形变强化"工艺制备得到TiB2-W-Cu复合材料致密样品,通过多次形变强化的方法提高铜基复合材料的硬度,并采用硬度计、电烧蚀装置等设备测试所制备的铜基纳米复合材料样品的硬度、软化温度、导电性以及电弧烧蚀等性能指标。样品的平均电导率4.76×103 S/m、硬度HV=142、软化温度≥950℃、电弧烧蚀≤40μg/C。

The TiB2-W-Cu dense composites were prepared through the＂cold isostatic pressing—reductive atmosphere sintering—strain hardening＂ process.The hardness of copper-based composites was enhanced by strain hardening.The hardness,softening temperature,conductivity and anti-erosion performance were examined by using hardness tester,electric arc erosion devices and other equipments.The properties of the prepared copper-based nano-composites are,average conductivity of 4.76×103 S/m,hardness HV=142,softening temperature ≥950 ℃,and electric arc ablation ≤40 μg/C.