难熔金属碳化物Cr_3C_2、VC、WC、TaC、NbC及Ti(C、N)粉中硫的测定

DETERMINATION OF SULFUR IN THE ADDED MATERIALS IN CERMETS SUCH AS Cr_3C_2,VC,WC,TaC,NbC AND Ti (C, N)－BASED HARD ALLOY

研究了燃烧──—电导法测定金属陶瓷添加剂Cr3C2；VC；WC；TaC；NbC及Ti（C、N）粉中硫的测定条件，建立了分析方法．方法相对标准偏差5％左右，仪器的灵敏度为3X10－6，最低检测限为1ppm．

In this paper, Burn － electric － concluitance is studied to determine Sulfur in the added Marterisls in Cerments Such asCr3C2 , VC, WC. TaC, N bC and Ti (C. N ) － Baseel Harcl alloy. the determine method is estabished. The method relative stardard deviation is 5 % arso. Sensitivity is 3X 10－6. Limit detecter is 1ppm.