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以机械合金化CrW粉末为原料,采用真空烧结制备CrW合金进行电烧蚀实验,并利用第一性原理计算了CrW固溶体电子态密度,探讨固溶对电烧蚀性能的影响规律。实验结果表明:球磨时间越长,烧结体CrW的固溶程度越高、平均耐电压强度越高,烧蚀面积越少;计算结果表明,随W固溶度的增大,CrW合金费米能级处电子密度下降,合金稳定性提高。
The mechanical alloying of CrW powder was taken as raw material, the CrW alloy was prepared by vacuum sintering, and the electronic density of CrW solid solution was calculated by the first principle. The influence of solution treatment on the ablation performance was discussed. The experimental results show that the longer the ball milling time, the higher the solid solution degree of the CrW sintered body and the higher the average dielectric strength strength, the smaller the ablated area. The calculated results show that with the increase of W solid solubility, the Fermi energy Electronic density at the level of decline, improved alloy stability.