Abstract
Effects of replacement of tungsten carbide with molybdenum carbide on the properties of WC-Co alloys were studied. Two sorts of alloy systems, i.e., a WC-Mo2C-Co alloy system prepared by using individual powder as a starting material, and a (W, Mo)C-Co alloy system by using cobalt and (W, Mo)C solid-solution powders were used as specimens.
The room temperature T. R. S. Of WC-Mo2C-Co alloy system dropped sharply with increasing amount of molybdenum carbide. On the other hand, that of (W, Mo)C-Co alloy system was hardly affected by the amount of molybdenum carbide. However, the hardness of (W, Mo)C-Co alloy was not improved, and the two-phase region became narrower with increasing the amount of molybdenum carbide.
