以含Ni还原钨粉为原料，采用冷等静压将粉末压制成棒，经氢气气氛中高温烧结获得钨块体，烧结温度为2340℃，保温时间为10h。测试杂质元素Ni在钨烧结体中的分布规律。AES采集方案：将样品破坏露出新鲜断面，放入纳米扫描俄歇系统中，采用同轴电子枪和CMA能量分析器，电子枪高压为10KV，分析室真空度优于为3.9×10-9 Torr。TEM采集方案：将样品线切割成Φ10mm×5 mm的圆柱小块，配置10 vol.%铁氰化钾+10 vol.%氢氧化钠的水溶液，对样品进行化学腐蚀，在双束扫描电镜下沿着样品晶界位置切割出检测样品，再转移至透射电镜进行测试，加速电压为300 kV。

Taking Ni-containing reduced tungsten powder as raw material, cold isostatic pressing is used to press the powder into a rod, and a tungsten block is obtained by high-temperature sintering in a hydrogen atmosphere. The sintering temperature is 2340℃ and the holding time is 10h. Test the distribution of impurity element Ni in the tungsten sintered body. AES acquisition scheme: Destroy the sample to expose the fresh section, put it into the nano-scan Auger system, use the coaxial electron gun and CMA energy analyzer, the high voltage of the electron gun is 10KV, and the vacuum degree of the analysis chamber is better than 3.9×10-9 Torr. TEM collection scheme: cut the sample wire into small cylindrical pieces of Φ10mm×5 mm, configure a 10 vol.% potassium ferricyanide + 10 vol.% sodium hydroxide aqueous solution, and chemically corrode the sample under a double-beam scanning electron microscope The test sample was cut along the grain boundary of the sample, and then transferred to a transmission electron microscope for testing. The acceleration voltage was 300 kV.