Peicheng Mo, Jiarong Chen, Peixun Wang, Xiaoyi Pan, Jun Zhang, Kai Li, Chao Chen
{"title":"合成压力对 PcBN 复合材料性能的影响","authors":"Peicheng Mo, Jiarong Chen, Peixun Wang, Xiaoyi Pan, Jun Zhang, Kai Li, Chao Chen","doi":"10.1016/j.diamond.2024.111697","DOIUrl":null,"url":null,"abstract":"<div><div>Polycrystalline cubic boron nitride (PcBN) composites were synthesized under high-temperature and high-pressure (HPHT) conditions using TiC, Al and Ti as binders. This study explores the influence of varying synthesis pressures on the microstructure, interfacial bonding, densification, and mechanical properties of PcBN composites. The test results indicate that as synthesis pressure increased, the diffusion of Al and Ti elements to the surface of cBN particles was enhanced. This facilitates the migration of Ti atoms through the Al-rich matrix to the surface layer of cBN, thus accelerating the chemical interaction. At the highest pressure of 6 GPa, the hardness, flexural strength and fracture toughness of the samples achieved their maximum values: 3719 Hv, 1090 MPa, and 7.6 MPa.m<sup>1/2</sup>, respectively. Additionally, the material exhibits excellent cutting properties. Crack bridging, crack deflection, particle pullout and transgranular fracture were observed during the fracture process of the samples. Indicating strong interfacial bonding between cBN and the binder, which contributes to the material's enhanced toughness.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"150 ","pages":"Article 111697"},"PeriodicalIF":4.3000,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of synthesis pressure on the properties of PcBN composites\",\"authors\":\"Peicheng Mo, Jiarong Chen, Peixun Wang, Xiaoyi Pan, Jun Zhang, Kai Li, Chao Chen\",\"doi\":\"10.1016/j.diamond.2024.111697\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Polycrystalline cubic boron nitride (PcBN) composites were synthesized under high-temperature and high-pressure (HPHT) conditions using TiC, Al and Ti as binders. This study explores the influence of varying synthesis pressures on the microstructure, interfacial bonding, densification, and mechanical properties of PcBN composites. The test results indicate that as synthesis pressure increased, the diffusion of Al and Ti elements to the surface of cBN particles was enhanced. This facilitates the migration of Ti atoms through the Al-rich matrix to the surface layer of cBN, thus accelerating the chemical interaction. At the highest pressure of 6 GPa, the hardness, flexural strength and fracture toughness of the samples achieved their maximum values: 3719 Hv, 1090 MPa, and 7.6 MPa.m<sup>1/2</sup>, respectively. Additionally, the material exhibits excellent cutting properties. Crack bridging, crack deflection, particle pullout and transgranular fracture were observed during the fracture process of the samples. Indicating strong interfacial bonding between cBN and the binder, which contributes to the material's enhanced toughness.</div></div>\",\"PeriodicalId\":11266,\"journal\":{\"name\":\"Diamond and Related Materials\",\"volume\":\"150 \",\"pages\":\"Article 111697\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-10-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Diamond and Related Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0925963524009105\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, COATINGS & FILMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Diamond and Related Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925963524009105","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
Effect of synthesis pressure on the properties of PcBN composites
Polycrystalline cubic boron nitride (PcBN) composites were synthesized under high-temperature and high-pressure (HPHT) conditions using TiC, Al and Ti as binders. This study explores the influence of varying synthesis pressures on the microstructure, interfacial bonding, densification, and mechanical properties of PcBN composites. The test results indicate that as synthesis pressure increased, the diffusion of Al and Ti elements to the surface of cBN particles was enhanced. This facilitates the migration of Ti atoms through the Al-rich matrix to the surface layer of cBN, thus accelerating the chemical interaction. At the highest pressure of 6 GPa, the hardness, flexural strength and fracture toughness of the samples achieved their maximum values: 3719 Hv, 1090 MPa, and 7.6 MPa.m1/2, respectively. Additionally, the material exhibits excellent cutting properties. Crack bridging, crack deflection, particle pullout and transgranular fracture were observed during the fracture process of the samples. Indicating strong interfacial bonding between cBN and the binder, which contributes to the material's enhanced toughness.
期刊介绍：
DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices.
The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.
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