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球铁石墨相中含有多种微量元素,微量元素中的反球化元素的含量高低和分布对石墨球化、球铁的机械和力学性能有直接影响,为了深入研究球化机制,将球铁制成10μm厚的靶片,用SPM分析了微量元素Cr、Cu、Bi在球墨中和周围的分布,给出了球铁中微量元素二维等高线分布图。实验结果表明球铁中Cr、Cu主要分布在基体中,随着反球化元素Bi含量的增加,Cu逐渐侵入石墨相,在反球化作用中Cu和Bi可能是一组相关的元素。
Nodular graphite phase contains a variety of trace elements, trace elements in the level of anti-nodular elements and distribution of graphite nodularity, ductile iron mechanical and mechanical properties have a direct impact, in order to further study the nodular mechanism, the ductile iron A 10μm thick target was made. The distribution of trace elements Cr, Cu and Bi in and around the nodules was analyzed by SPM. The two-dimensional contours of trace elements in the ductile iron were given. The experimental results show that Cr and Cu are mainly distributed in the matrix. With the increase of anti-nodular elemental Bi, Cu intrudes into the graphite phase gradually. Cu and Bi may be a group of related elements in anti-nodularization.