Research progress of nickel based filler for development of diamond tools

Owing to diamond excellent physical and chemical properties, so synthetic diamond abrasives are extensively used in manufacturing diamond tools are utilized in machining hard and brittle materials. The brazing technology is exploited with strong bonding force between the diamond and substrate, which can realize metallurgical and chemical bonding between the filler metals and diamond abrasives. In this paper, the research reports on nickel-based fillers for brazing diamond grains at home and abroad in recent years are reviewed systematically, with emphasis on the influence of alloying elements and active elements on the properties of nickel-based fillers. The advantages and disadvantages of Cr, B, Si, P, Mn, Fe, Cu, W, C in nickel-based fillers and the negative effects of impurity elements were summarized. The shortcomings in the research and application of nickel-based fillers were pointed out, which provided theoretical guidance for further systematic research and development of related technologies.