Abstract：The effect of sample preparation on the determination results of vanadium, iron, silicon, carbon and oxygen in vanadium-aluminum master alloy was investigated. The storage and preparation methods of sample were determined: the sample should be kept in desiccators; the breaking time was 2 and 5 s for 40 g of vanadium-aluminum master alloy sample with vanadium content no more than 55% and more than 55%, respectively, then the sample could be broken to -0.147 mm. The determination results and precision before and after sample preparation were compared by determination of AlV55 and AlV85 alloy samples which were randomly selected for 5 times, while, the recovery tests of vanadium and oxygen were also conducted. The results showed that the uniformity of sample was significantly improved after preparation. The repeatability and accuracy of determination results especially for oxygen and vanadium could be guaranteed. The randomly selected 10 batches of AlV55 samples were prepared and determined according to the experimental method. The inter-laboratory data were compared,which indicated the good consistency.
孙宝莲,周恺,李波,刘雷雷,隋英丹,王宽,禄妮,王金磊,罗琳. 制样方法对测定钒铝中间合金中钒铁硅碳氧的影响[J]. 冶金分析, 2014, 34(12): 23-28.
SUN Bao-lian, ZHOU Kai, LI Bo, LIU Lei-lei, SUI Ying-dan, WANG Kuan,LU Ni,WANG Jin-lei,LUO Lin. Effect of sample preparation on determination of vanadium, iron, silicon,carbon and oxygen in vanadium-aluminum master alloy. , 2014, 34(12): 23-28.
