Co-Based Hard-Facing Alloys and Related Materials

2 Co-Based Hard-Facing Alloys and Related Materials 

The behavior of Co-based wear resistant alloys is based on a coarse dispersion of hard carbide phases embedded in a tough Co-rich metallic matrix. The volume fraction of the hard carbide phase is comparatively high e.g., at 2.4wt%C the carbide content is 30wt%. The carbide phases are M7C3 (Cr7C3 type) and MgC (WgC type). Table 3.1-85 lists characteristic properties of Co-based hard facing alloys the compositions of which are listed Table 3.1-83. 

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