Enhanced Coarse-Grained WC-Co(Ce) Cemented Carbide Prepared through Co-Precipitation
The exploration of coarse-grained WC cemented carbide has become a research hotspot for its application in the fields of rock cutting and mining; a key issue is how to achieve uniform dispersion and densification of the sintered phase, as well as how to obtain better mechanical properties. In this p...
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MDPI AG
2023-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/16/5506 |
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| author | Fanlu Min Shiyu Wang Songbai Yu Hao Yang Zhanhu Yao Jianzhong Ni Jianfeng Zhang |
| author_facet | Fanlu Min Shiyu Wang Songbai Yu Hao Yang Zhanhu Yao Jianzhong Ni Jianfeng Zhang |
| author_sort | Fanlu Min |
| collection | DOAJ |
| description | The exploration of coarse-grained WC cemented carbide has become a research hotspot for its application in the fields of rock cutting and mining; a key issue is how to achieve uniform dispersion and densification of the sintered phase, as well as how to obtain better mechanical properties. In this paper, chemical co-precipitation, combined with hydrogen reduction, was adopted. CoCl<sub>2</sub>·6H<sub>2</sub>O and CeCl<sub>3</sub> were used as precursors to coat Co nanoparticles on the surface of WC powder while introducing different contents of cerium; the samples were then sintered and densified to obtain WC-Co(Ce) hard alloy materials. On the surface of the obtained WC particles, the distribution of Co(Ce) nanoparticles was uniform and dense, and the average particle size after sintering was 4.2 μm, which lies in the coarse-grained range. The addition of cerium elements significantly improves the flexural strength and impact toughness; when the cerium content was 0.5% and 0.6%, they increased to 2487 MPa and 36.1 kJ/m<sup>2</sup>, respectively. The addition of Co(Ce) through the co-precipitation method could achieve a uniform coating of the Co phase, along with the uniform dispersion and densification of the sintered phase, giving the WC-Co(Ce) cemented carbide excellent properties. |
| first_indexed | 2024-03-10T23:46:59Z |
| format | Article |
| id | doaj.art-ea709a0505c94a9bb214af899f6b1282 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T23:46:59Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-ea709a0505c94a9bb214af899f6b12822023-11-19T01:58:25ZengMDPI AGMaterials1996-19442023-08-011616550610.3390/ma16165506Enhanced Coarse-Grained WC-Co(Ce) Cemented Carbide Prepared through Co-PrecipitationFanlu Min0Shiyu Wang1Songbai Yu2Hao Yang3Zhanhu Yao4Jianzhong Ni5Jianfeng Zhang6Key Laboratory of Geomechanics and Embankment Engineering, Hohai University, Ministry of Education, Nanjing 210024, ChinaCollege of Civil and Transportation Engineering, Hohai University, Nanjing 210024, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaState Grid Lu’an Electric Power Supply Company, Lu’an 237000, ChinaCCCC Tunnel Engineering Company Limited, Beijing 100102, ChinaHangzhou Fuyang City Construction and Investment Group Company Limited, Hangzhou 311400, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaThe exploration of coarse-grained WC cemented carbide has become a research hotspot for its application in the fields of rock cutting and mining; a key issue is how to achieve uniform dispersion and densification of the sintered phase, as well as how to obtain better mechanical properties. In this paper, chemical co-precipitation, combined with hydrogen reduction, was adopted. CoCl<sub>2</sub>·6H<sub>2</sub>O and CeCl<sub>3</sub> were used as precursors to coat Co nanoparticles on the surface of WC powder while introducing different contents of cerium; the samples were then sintered and densified to obtain WC-Co(Ce) hard alloy materials. On the surface of the obtained WC particles, the distribution of Co(Ce) nanoparticles was uniform and dense, and the average particle size after sintering was 4.2 μm, which lies in the coarse-grained range. The addition of cerium elements significantly improves the flexural strength and impact toughness; when the cerium content was 0.5% and 0.6%, they increased to 2487 MPa and 36.1 kJ/m<sup>2</sup>, respectively. The addition of Co(Ce) through the co-precipitation method could achieve a uniform coating of the Co phase, along with the uniform dispersion and densification of the sintered phase, giving the WC-Co(Ce) cemented carbide excellent properties.https://www.mdpi.com/1996-1944/16/16/5506chemical co-precipitationinfluence lawcarbidesmechanical propertiesmicromorphology |
| spellingShingle | Fanlu Min Shiyu Wang Songbai Yu Hao Yang Zhanhu Yao Jianzhong Ni Jianfeng Zhang Enhanced Coarse-Grained WC-Co(Ce) Cemented Carbide Prepared through Co-Precipitation Materials chemical co-precipitation influence law carbides mechanical properties micromorphology |
| title | Enhanced Coarse-Grained WC-Co(Ce) Cemented Carbide Prepared through Co-Precipitation |
| title_full | Enhanced Coarse-Grained WC-Co(Ce) Cemented Carbide Prepared through Co-Precipitation |
| title_fullStr | Enhanced Coarse-Grained WC-Co(Ce) Cemented Carbide Prepared through Co-Precipitation |
| title_full_unstemmed | Enhanced Coarse-Grained WC-Co(Ce) Cemented Carbide Prepared through Co-Precipitation |
| title_short | Enhanced Coarse-Grained WC-Co(Ce) Cemented Carbide Prepared through Co-Precipitation |
| title_sort | enhanced coarse grained wc co ce cemented carbide prepared through co precipitation |
| topic | chemical co-precipitation influence law carbides mechanical properties micromorphology |
| url | https://www.mdpi.com/1996-1944/16/16/5506 |
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