球铁中微量元素Cu、Cr、Bi分布的SPM分析  

Distribution of trace elements Cu, Cr and Bi in nodular cast iron by SPM analysis

作　　者：冯松林[1] 钟溟 任闽秦 刘年庆[1] 焉伶娜 高之伟 王禹[2] 韩其勇[2] 朱节清[3] 谷英梅[3] 陆荣荣[3] 杨长义[3] 

机构地区：[1]中国科学院高能物理研究所,北京100080 [2]北京科技大学,北京100083 [3]中国科学院上海原子核研究所,上海201800

出　　处：《核技术》1993年第7期416-419,共4页Nuclear Techniques

基　　金：中国科学院择优课题;获JOLNAT资助

摘　　要：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。Many trace elements exist in graphite of nodular cast iron. The contents and distributions of trace elements effect directly on nodularization as well as mechanic and machinery properties. The distributions of trace elements in nodular graphite have been measured using SPM. The results showed that most of Cu and Cr were distributed in matrix, and some of Cu intruded into nodular graphite as antinodu-larizing element Bi was increased.

关 键 词：SPM分析 球墨铸铁 微量元素 铜 铋 

分 类 号：TG143.5[一般工业技术—材料科学与工程]