【摘要】 研究了锂、钠、钾在氢还原二氧化钨时引起产物钨粉超常规粗化现象的特点、差别。锂是使钨粉晶粒长大的最佳掺杂元素，当它的掺入量≥400×10－6、还原温度≥1000℃时，可以获得FSSS粒度达100μp的特粗结晶钨粉。更多还原

【Abstract】 The characters and differences of unconventional coarsening of W powder caused by Li, Na, K are studied in the paper. It reveals that Li is the optimum element for coarsening of W Powder. Very coarse crystal W powder with an average particle size of 100μm is obtained when doping amount of Li is not less than 400ppm and reduction temperature is not lower than 1000℃.更多还原