Abstract
The joining strength and corresponding fracture mechanism of the brazing interface between diamond grains and tool matrix is one of the primary problems in the development and application of brazed diamond grinding tools. In this study shearing tests were performed for the brazed joints, meanwhile the fracture mechanism and the joining characteristics were analyzed deeply. The results indicate that, depending on the metallurgical integration effect through the atom diffusion between the filler alloy and the metal matrix, and on the strong chemical bond by the new-formed Cr-C compounds between the filler alloy and diamond grains, hard and reliable joining is realized at the grain interfaces, which significantly supports the potential advantages of the latest brazed diamond grinding tools.
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