张延京,李建平,杨忠,李俊英,陶栋,郭永春

• 1:西安工业大学材料与化工学院

摘要(Abstract)：

通过在铸造涂料中引入(5~40)%FeS,利用FeS的蠕化衰退作用,在蠕墨铸铁局部表层制备1~5 mm灰铸铁。综合运用OM,EPMA和激光热导仪分析了涂料中FeS含量对铸件石墨形态分布规律的影响机理及其对铸件不同部位的导热系数的影响规律。结果表明:随着Fe S含量增大,铸件表层灰铸铁的厚度先逐渐增大直至平衡;从铸件表面到内部,石墨形态由A型逐渐转变为D型,最后到蠕虫状石墨;且残留的S含量逐渐降低,残留的Mg含量逐渐升高,Mg与S形成化合物,降低了铸件表面的残余Mg含量,发生蠕化衰退,形成灰铸铁。从铸件表面到内部相同温度下的导热性能逐渐降低。

关键词(KeyWords)： 复合铸铁;FeS涂料;蠕化衰退;导热系数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51201120);; 陕西省教育厅产业化资助项目(2012JC13)

作者(Author): 张延京,李建平,杨忠,李俊英,陶栋,郭永春

DOI: 10.13289/j.issn.1009-6264.2016.08.020

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