Abstract
The effect of Sn content added in pre-alloy powder on the microstructure, porosity, hardness and bending strength of hot pressing sintering of a diamond matrix was investigated. The results show that with the increase of Sn content in the pre-alloy powder, a reduction in grain size and porosity as well as an increase in hardness is observed. As a result of the reduction in porosity, the flexural strength increases with the increase in the Sn content in the pre-alloy powder. However, with the increase of Sn content, the bending strength decreases owing to the formation of Cu5.6Sn in the matrix. The properties of the diamond matrix are improved, and the lifetime of the diamond matrix is prolonged when the Sn content is 4 wt.%.
Highlights
Diamond has good wear resistance, stable physical and chemical properties, as well as good corrosion resistance, radiation resistance and thermal conductivity
Single-layer diamond tools are a common standard in the diamond tool industry
Effect of Sn Content on the Microstructure Evolution porosity decreases and the density of samples increases with the increase in Sn content in the powder
Summary
Diamond has good wear resistance, stable physical and chemical properties, as well as good corrosion resistance, radiation resistance and thermal conductivity. Diamond is widely used in cutting tools, for precision machining [1,2]. The main manufacturing methods of diamond tools are sintering, welding and electroplating, excimer laser ablation and thermal spraying [3,4,5,6]. Single-layer diamond tools are a common standard in the diamond tool industry. In most cases they are produced by electroplating, whereas nickel is used as a deposited metal. The surface topography of the different blades is evaluated to examine the impact of wear depending on the surface profile and the distribution of the diamonds in the blade’s substrate [9]. The surface degradation of coatings is addressed to describe the interaction of the coated surface and different sizes of graphite embedded in the lubricant’s matrix [10]
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