Effect of Graphene on the Microstructure and Mechanical Properties of WC-Based Cemented Carbide
WC-based cemented carbides were prepared by spark plasma sintering (SPS) of WC-Co-Cr<sub>3</sub>C<sub>2</sub>-VC alloy powder by adding different contents of graphene. The phase composition, microstructure, mechanical properties, and magnetic properties of cemented carbide we...
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MDPI AG
2023-09-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/10/1414 |
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| author | Wanzhen Qi Zhiwei Zhao Yanju Qian Shijie Zhang Hongjuan Zheng Xiaomiao Zhao Xinpo Lu Shun Wang |
| author_facet | Wanzhen Qi Zhiwei Zhao Yanju Qian Shijie Zhang Hongjuan Zheng Xiaomiao Zhao Xinpo Lu Shun Wang |
| author_sort | Wanzhen Qi |
| collection | DOAJ |
| description | WC-based cemented carbides were prepared by spark plasma sintering (SPS) of WC-Co-Cr<sub>3</sub>C<sub>2</sub>-VC alloy powder by adding different contents of graphene. The phase composition, microstructure, mechanical properties, and magnetic properties of cemented carbide were investigated by means of XRD, SEM, Vickers hardness and fracture toughness tests, and magnetic properties tests. The results showed that the mechanical properties of the specimens show a trend of first increasing and then decreasing with the increase in graphene content. After adding 0.6 wt.% graphene, graphene is uniformly distributed on the substrate in the form of flakes, WC grain size decreases, the hardness of the specimen increases to 2009 HV, the relative density increases to 94.3%, the fracture toughness is 11.72 MPa·m<sup>1/2</sup>, and the coercivity of the sample is 437.55 Oe. Therefore, cemented carbide with a graphene content of 0.6 wt.% has excellent comprehensive performance (Vickers hardness and fracture toughness). |
| first_indexed | 2024-03-10T21:20:04Z |
| format | Article |
| id | doaj.art-cc3d886236664fe9b03efe785c97ea0b |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T21:20:04Z |
| publishDate | 2023-09-01 |
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| series | Crystals |
| spelling | doaj.art-cc3d886236664fe9b03efe785c97ea0b2023-11-19T16:08:53ZengMDPI AGCrystals2073-43522023-09-011310141410.3390/cryst13101414Effect of Graphene on the Microstructure and Mechanical Properties of WC-Based Cemented CarbideWanzhen Qi0Zhiwei Zhao1Yanju Qian2Shijie Zhang3Hongjuan Zheng4Xiaomiao Zhao5Xinpo Lu6Shun Wang7College of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaWC-based cemented carbides were prepared by spark plasma sintering (SPS) of WC-Co-Cr<sub>3</sub>C<sub>2</sub>-VC alloy powder by adding different contents of graphene. The phase composition, microstructure, mechanical properties, and magnetic properties of cemented carbide were investigated by means of XRD, SEM, Vickers hardness and fracture toughness tests, and magnetic properties tests. The results showed that the mechanical properties of the specimens show a trend of first increasing and then decreasing with the increase in graphene content. After adding 0.6 wt.% graphene, graphene is uniformly distributed on the substrate in the form of flakes, WC grain size decreases, the hardness of the specimen increases to 2009 HV, the relative density increases to 94.3%, the fracture toughness is 11.72 MPa·m<sup>1/2</sup>, and the coercivity of the sample is 437.55 Oe. Therefore, cemented carbide with a graphene content of 0.6 wt.% has excellent comprehensive performance (Vickers hardness and fracture toughness).https://www.mdpi.com/2073-4352/13/10/1414cemented carbidesspark plasma sinteringgraphenemechanical properties |
| spellingShingle | Wanzhen Qi Zhiwei Zhao Yanju Qian Shijie Zhang Hongjuan Zheng Xiaomiao Zhao Xinpo Lu Shun Wang Effect of Graphene on the Microstructure and Mechanical Properties of WC-Based Cemented Carbide Crystals cemented carbides spark plasma sintering graphene mechanical properties |
| title | Effect of Graphene on the Microstructure and Mechanical Properties of WC-Based Cemented Carbide |
| title_full | Effect of Graphene on the Microstructure and Mechanical Properties of WC-Based Cemented Carbide |
| title_fullStr | Effect of Graphene on the Microstructure and Mechanical Properties of WC-Based Cemented Carbide |
| title_full_unstemmed | Effect of Graphene on the Microstructure and Mechanical Properties of WC-Based Cemented Carbide |
| title_short | Effect of Graphene on the Microstructure and Mechanical Properties of WC-Based Cemented Carbide |
| title_sort | effect of graphene on the microstructure and mechanical properties of wc based cemented carbide |
| topic | cemented carbides spark plasma sintering graphene mechanical properties |
| url | https://www.mdpi.com/2073-4352/13/10/1414 |
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