摘要
加入高铬铸铁中的稀土主要存在于夹杂物中，使夹杂物的类型、性质、形状、数量、尺寸和分布都发生变化。微量稀土改善了晶界结合状态，进一步提高了高铬铸铁的性能，尤其提高了耐磨性及多冲剥落的抗力，过量加入稀土将严重恶化高铬铸铁各种性能。
Mixed rare earth added into high chromium cast iron would esseentially exist in in- clusions, and make them change their types, properties, shapes, quantites, sizes, and distribu- tions. The mixed rare earth in suitable numbers impove the conditions of grain boundary,and increse the properties of high chromium cast iron, especially wear resistance and impact peel- ing off resistance. Adding excessive mixed rare earth would seriously deteriorate the proper- ties of the high chromium cast iron.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
1991年第1期92-98,共7页
Journal of Fuzhou University(Natural Science Edition)
关键词
高铬铸铁
稀土
夹杂物
rare earth
high chromium cast iron
inclusions
impact peeling off resistance
