Preparation of WC cemented carbide without metallic binder toughened by MgO-B2O3 via spark plasma sintering at 1400℃
In order to reduce the sintering temperature and obtain higher fracture toughness of WC cemented carbides without metallic binder, WC cemented carbide was toughened by MgO and B2O3. Dense WC-MgO-B2O3 bulk materials were prepared at the relative low temperature of 1400℃ via spark plasma sintering(SPS...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2022-11-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000441 |
| _version_ | 1797963028186005504 |
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| author | LAI Jiaming LI Jingmao ZHU Dezhi LIANG Liang QU Shengguan LI Xiaoqiang |
| author_facet | LAI Jiaming LI Jingmao ZHU Dezhi LIANG Liang QU Shengguan LI Xiaoqiang |
| author_sort | LAI Jiaming |
| collection | DOAJ |
| description | In order to reduce the sintering temperature and obtain higher fracture toughness of WC cemented carbides without metallic binder, WC cemented carbide was toughened by MgO and B2O3. Dense WC-MgO-B2O3 bulk materials were prepared at the relative low temperature of 1400℃ via spark plasma sintering(SPS), and the effects of MgO-B2O3 addition on sintering mechanism, microstructure evolution and mechanical properties of WC cemented carbides without metallic binder were studied. The results show that the addition of MgO-B2O3 promotes the sintering densification of WC, and reduces the sintering temperature of WC cemented carbides without metallic binder. With the increase of MgO-B2O3 contents, the morphology of some second phases in the microstructure is gradually transformed from short rod-shaped to long rod-shaped, and then to aggregated block. When MgO-B2O3 content reaches 8% (mass fraction), the bulk material has better fracture toughness of (9.45±0.37) MPa·m1/2, and its hardness is (18.16±0.17) GPa. |
| first_indexed | 2024-04-11T01:21:58Z |
| format | Article |
| id | doaj.art-a6a27fc730134369af16cdef3b583cf9 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T01:21:58Z |
| publishDate | 2022-11-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-a6a27fc730134369af16cdef3b583cf92023-01-03T11:18:59ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812022-11-015011738010.11868/j.issn.1001-4381.2021.00044120221107Preparation of WC cemented carbide without metallic binder toughened by MgO-B2O3 via spark plasma sintering at 1400℃LAI Jiaming0LI Jingmao1ZHU Dezhi2LIANG Liang3QU Shengguan4LI Xiaoqiang5National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaIn order to reduce the sintering temperature and obtain higher fracture toughness of WC cemented carbides without metallic binder, WC cemented carbide was toughened by MgO and B2O3. Dense WC-MgO-B2O3 bulk materials were prepared at the relative low temperature of 1400℃ via spark plasma sintering(SPS), and the effects of MgO-B2O3 addition on sintering mechanism, microstructure evolution and mechanical properties of WC cemented carbides without metallic binder were studied. The results show that the addition of MgO-B2O3 promotes the sintering densification of WC, and reduces the sintering temperature of WC cemented carbides without metallic binder. With the increase of MgO-B2O3 contents, the morphology of some second phases in the microstructure is gradually transformed from short rod-shaped to long rod-shaped, and then to aggregated block. When MgO-B2O3 content reaches 8% (mass fraction), the bulk material has better fracture toughness of (9.45±0.37) MPa·m1/2, and its hardness is (18.16±0.17) GPa.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000441wcmgob2o3sintering mechanismmicrostructure evolutionmechanical propertysintering temperature |
| spellingShingle | LAI Jiaming LI Jingmao ZHU Dezhi LIANG Liang QU Shengguan LI Xiaoqiang Preparation of WC cemented carbide without metallic binder toughened by MgO-B2O3 via spark plasma sintering at 1400℃ Cailiao gongcheng wc mgo b2o3 sintering mechanism microstructure evolution mechanical property sintering temperature |
| title | Preparation of WC cemented carbide without metallic binder toughened by MgO-B2O3 via spark plasma sintering at 1400℃ |
| title_full | Preparation of WC cemented carbide without metallic binder toughened by MgO-B2O3 via spark plasma sintering at 1400℃ |
| title_fullStr | Preparation of WC cemented carbide without metallic binder toughened by MgO-B2O3 via spark plasma sintering at 1400℃ |
| title_full_unstemmed | Preparation of WC cemented carbide without metallic binder toughened by MgO-B2O3 via spark plasma sintering at 1400℃ |
| title_short | Preparation of WC cemented carbide without metallic binder toughened by MgO-B2O3 via spark plasma sintering at 1400℃ |
| title_sort | preparation of wc cemented carbide without metallic binder toughened by mgo b2o3 via spark plasma sintering at 1400℃ |
| topic | wc mgo b2o3 sintering mechanism microstructure evolution mechanical property sintering temperature |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000441 |
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