高频红外碳硫法测定碳化硅中SiC

Determining the SiC Contents in Carborundum by the Method of High-frequency Infrared Carbon-sulphur

采用对试样进行灼烧预处理的方法,除去游离碳,用高频红外碳硫仪测定碳化硅中的SiC。探讨了锡粒、纯铁、钨粒作为助熔剂的用量,并以纯碳化硅和粘合剂合成的标准样品校正仪器,本方法的相对标准偏差(RSD)为0.73%(n=7)。

The SiC contents in carborundum are determined by the analyzer of highfrequency infrared carbide sulphur after removing free carbon by burning. The dosage of stannum grain, pure iron and tungsten grain as smelting flux are discussed, and the analyzer is revised by the standard reference material composed by pure carborundum and bond. The relative standard deviation is 0.73%(n=7).