High-Pressure synthesis of Al2O3-cBN-hBN Self-lubricating ceramic
Al2O3-based self-lubricating ceramics are cutting tool materials that meet the extreme working conditions of dry cutting. However, due to the soft lubricating components, the mechanical properties of composites are dramatically reduced. In this paper, Al2O3-cBN-hBN self-lubricating material was desi...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127522002593 |
| _version_ | 1811258284282216448 |
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| author | Jiakun Wu Haikuo. Wang Chao Wang Zhicai Zhang Yao Tang Zhiqiang Hou Shun Wan Dazhuan Wu Zhongjun Tan Xiaoping Ouyang |
| author_facet | Jiakun Wu Haikuo. Wang Chao Wang Zhicai Zhang Yao Tang Zhiqiang Hou Shun Wan Dazhuan Wu Zhongjun Tan Xiaoping Ouyang |
| author_sort | Jiakun Wu |
| collection | DOAJ |
| description | Al2O3-based self-lubricating ceramics are cutting tool materials that meet the extreme working conditions of dry cutting. However, due to the soft lubricating components, the mechanical properties of composites are dramatically reduced. In this paper, Al2O3-cBN-hBN self-lubricating material was designed. High density, fine grain ceramics were synthesized by high-pressure technology. The influence of thermodynamic condition, cBN/hBN addition on mechanical and thermal properties of sintered composites was analyzed. Friction and wear tests were carried out. It is found that the addition of cBN particles can significantly improve the mechanical and thermal properties of the composites. However, the truss effect caused by excessive volume fraction of cBN can reduce the pressure transfer efficiency, and then affect the properties of sintered composites. The different hBN content can change the wear mechanism of the composites. The release efficiency of hBN particles in composites was enhanced due to the large modulus difference between cBN and hBN. The well-sintered Al2O3-cBN-hBN bulks present an excellent mechanical property. The hardness of the composites is improved at least by 54% compared with the traditional self-lubricating material on the premise of ensuring fracture toughness and lubrication performance. |
| first_indexed | 2024-04-12T18:10:51Z |
| format | Article |
| id | doaj.art-26964778bea54bc19412579599b4a2ed |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-12T18:10:51Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-26964778bea54bc19412579599b4a2ed2022-12-22T03:21:49ZengElsevierMaterials & Design0264-12752022-05-01217110638High-Pressure synthesis of Al2O3-cBN-hBN Self-lubricating ceramicJiakun Wu0Haikuo. Wang1Chao Wang2Zhicai Zhang3Yao Tang4Zhiqiang Hou5Shun Wan6Dazhuan Wu7Zhongjun Tan8Xiaoping Ouyang9College of Energy Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Energy Engineering, Zhejiang University, Hangzhou 310027, China; Corresponding author.College of Energy Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Mechanical and Vehicle Engineering, Hunan University, Changsha 410000, ChinaXianghu High Tech Application Research Institute, Hangzhou 310027, ChinaCollege of Energy Engineering, Zhejiang University, Hangzhou 310027, ChinaCenter for High Pressure Science and Technology Advanced Research, Shanghai 201203, ChinaCollege of Energy Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Energy Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Energy Engineering, Zhejiang University, Hangzhou 310027, ChinaAl2O3-based self-lubricating ceramics are cutting tool materials that meet the extreme working conditions of dry cutting. However, due to the soft lubricating components, the mechanical properties of composites are dramatically reduced. In this paper, Al2O3-cBN-hBN self-lubricating material was designed. High density, fine grain ceramics were synthesized by high-pressure technology. The influence of thermodynamic condition, cBN/hBN addition on mechanical and thermal properties of sintered composites was analyzed. Friction and wear tests were carried out. It is found that the addition of cBN particles can significantly improve the mechanical and thermal properties of the composites. However, the truss effect caused by excessive volume fraction of cBN can reduce the pressure transfer efficiency, and then affect the properties of sintered composites. The different hBN content can change the wear mechanism of the composites. The release efficiency of hBN particles in composites was enhanced due to the large modulus difference between cBN and hBN. The well-sintered Al2O3-cBN-hBN bulks present an excellent mechanical property. The hardness of the composites is improved at least by 54% compared with the traditional self-lubricating material on the premise of ensuring fracture toughness and lubrication performance.http://www.sciencedirect.com/science/article/pii/S0264127522002593High pressureAl2O3Cubic boron nitrideSelf-lubricationWear mechanism |
| spellingShingle | Jiakun Wu Haikuo. Wang Chao Wang Zhicai Zhang Yao Tang Zhiqiang Hou Shun Wan Dazhuan Wu Zhongjun Tan Xiaoping Ouyang High-Pressure synthesis of Al2O3-cBN-hBN Self-lubricating ceramic Materials & Design High pressure Al2O3 Cubic boron nitride Self-lubrication Wear mechanism |
| title | High-Pressure synthesis of Al2O3-cBN-hBN Self-lubricating ceramic |
| title_full | High-Pressure synthesis of Al2O3-cBN-hBN Self-lubricating ceramic |
| title_fullStr | High-Pressure synthesis of Al2O3-cBN-hBN Self-lubricating ceramic |
| title_full_unstemmed | High-Pressure synthesis of Al2O3-cBN-hBN Self-lubricating ceramic |
| title_short | High-Pressure synthesis of Al2O3-cBN-hBN Self-lubricating ceramic |
| title_sort | high pressure synthesis of al2o3 cbn hbn self lubricating ceramic |
| topic | High pressure Al2O3 Cubic boron nitride Self-lubrication Wear mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S0264127522002593 |
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