Abstract：On the basis of the needs of reference materials of silicon-aluminum-iron in our country, two reference materials of silicon-aluminum-iron were prepared. According to the requirements of technical standard of silicon-aluminum-iron alloy, the silicon-aluminum-iron alloy with different content and without air hole or impurities on surface was selected as raw materials. After removing outer skin and inclusions and serting, the samples were prepared in to block samples with diameter of 40-50 mm. Then, they were grinded to particles with size smaller than 2 mm by jaw crusher. After fully mixing, the samples were repeatedly grinded with sample preparation machine. All the samples were made to pass through 0.125 mm (120 grid) screen. The uniformity and stability tests of prepared reference materials were performed. The results showed that the prepared reference material had good uniformity and stability. The characterisation analysis of three elements including silicon, aluminum and iron in reference material was performed by several laboratories. The analytical data were tested by Grubbs method, Cochran's theorem and Shapiro-wilks method. The results showed that the normality test values of prepared reference material were all higher than the value of 95 % confidence probability. The certified values exhibited normal distribution or approximately normal distribution.
李凤超*，周振华，周晨旭. 硅铝铁标准物质的研制[J]. 冶金分析, 2011, 31(11): 78-80.
LI Feng-chao*，ZHOU Zhen-hua，ZHOU Chen-xu. Development of reference materials of silicon-aluminium-iron. , 2011, 31(11): 78-80.
