Influence of rare earths metals (REM) on the structure and selected properties of grey cast iron

Abstract

The paper presents the results of tests carried out on grey cast iron obtained in laboratory conditions. Cast iron EN-GJL-200 was enriched with REM at 0,3 % wt. in relation to the weight of the charge metal. The presence of REM was found only in some elements of the structure, i.e. in ferrite and in precipitations. An 18 % decrease in the coefficient of friction was observed for REM-modified cast iron as compared to the base cast iron.

Keywords

• rare earth metals
• grey iron
• X-ray analysis
• microstructure
• wear resistance