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Appl. Sci. 2018, 8(9), 1501;

Effect of WC Nanoparticles on the Microstructure and Properties of WC-Bronze-Ni-Mn Based Diamond Composites

College of Construction Engineering, Jilin University, Changchun 130026, China
Key Laboratory of Drilling and Exploitation Technology in Complex Conditions of Ministry of Natural Resources, Changchun 130026, China
State Key Laboratory of Superhard Materials, Changchun 130021, China
Author to whom correspondence should be addressed.
Received: 24 July 2018 / Revised: 24 August 2018 / Accepted: 25 August 2018 / Published: 1 September 2018
(This article belongs to the Special Issue Metal Matrix Composites)
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Metal matrix-impregnated diamond composites are widely used for fabricating diamond tools. In order to meet the actual engineering challenges, researchers have made many efforts to seek effective methods to enhance the performance of conventional metal matrices. In this work, tungsten carbide (WC) nanoparticles were introduced into WC-Bronze-Ni-Mn matrix with and without diamond grits for improving the performance of conventional impregnated diamond composites. The influence of WC nanoparticles on the microstructure, densification, hardness, bending strength and wear resistance of matrix and diamond composites were investigated. The results showed that the bending strength of matrix increased up to approximately 20% upon nano-WC addition, while densification and hardness fluctuate slightly. The grinding ratio of diamond composites increased significantly by about 100% due to nano-WC addition. The strengthening mechanism was proposed according to experimental results. The diamond composites with 2.8 wt% nano-WC addition exhibited the best overall properties, thus having potential to apply to further diamond tools. View Full-Text
Keywords: WC nanoparticles; metal matrix; impregnated diamond composites; wear resistance WC nanoparticles; metal matrix; impregnated diamond composites; wear resistance

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Li, S.; Han, Z.; Meng, Q.; Zhao, X.; Cao, X.; Liu, B. Effect of WC Nanoparticles on the Microstructure and Properties of WC-Bronze-Ni-Mn Based Diamond Composites. Appl. Sci. 2018, 8, 1501.

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