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采用HT 2 0 0为实验材料 ,研究了微量元素Sb对灰铸铁石墨组织的影响 .研究结果表明 :灰铸铁中加入适量的Sb可明显减小石墨尺寸 .这种现象是由于增加了碳原子扩散阻力的结果 .
The effect of trace element Sb on the graphite structure of gray cast iron was studied by using HT 2 0 0 as experimental material.The results show that adding appropriate amount of Sb to gray cast iron can obviously reduce the size of graphite.It is due to the increase of carbon atom diffusion The result of resistance.