熔盐电解法制备钨铜合金粉

Preparation of W-Cu Alloy Powder with Molten Salt Electrolysis Process

在NaCl-KCl-Na2WO4-CuO体系中采用熔盐电解法直接制取钨铜合金粉,并对产物进行了XRD、SEM及EDS分析。结果表明,在780～800℃电解、阴极电流密度106～133mA/cm2、电解时间3～4h、电压2.2～3.2V的条件下,可以得到纯度99%以上、平均粒度0.91μm的钨铜合金粉末,各项指标基本达到了工业上烧结钨铜合金的要求。

Tungsten copper alloy powder was directly prepared in NaC1-KC1-Naz WO4-CuO system with molten salt electrolysis. The cathode electrolysis products were analyzed by XRD, SEM and EDS. The results show that copper tungsten alloy powder with purity of above 99 and average particle size of 0.91 btm is obtained under the reaction conditions including electrolytic temperature of 740-820 ℃, cathode current density of 106-133 mA/cmz, electrolysis time of 1.5-3.5 h, cell voltage of 2.2-3.2 V. The product reaches the manufacture requirement of sintering tungsten copper alloy in industry.