Authors:
Hosam ElRakayby, KiTae Kim
Abstract:
Powder metallurgically fabricated diamond grinding tools for the machining of concrete and natural
stones have high demands on their abrasive behavior and wear resistance. Because of the high
hardness of the synthetic diamond grits used, which are embedded in the metal matrix, the main focus
is on the wear behavior of these diamonds. The break out and the retention of the diamond grains
during the machining process directly influence the cutting performance of the tools. Therefore, an
important research topic focuses on the interface reactions between the metallic binder and the
diamond surface. The addition of small amounts of carbide forming metals such as Cr or Ti completely
inhibit graphitization and lead to a strong carbidic interface with a chemical bonding of the diamonds.
Based on these results, this paper focuses on the influence of carbide forming elements on the wear
performance and diamond retention.
