{"title":"立方氮化硼粉末的粒度对多晶立方氮化硼复合材料性能的影响","authors":"Changjiang Xiao, Haoyu Zheng, Hongjun Tao, Jinming Ma, qunfei Zhang, Lihui Tang","doi":"10.1007/s12034-024-03326-w","DOIUrl":null,"url":null,"abstract":"<div><p>Polycrystalline cubic boron nitride (PcBN) composites were prepared through high-temperature and high-pressure (HTHP) sintering process. Cubic boron nitride (cBN) powders with particle sizes of 0.2, 1, 3, and 8 μm were selected as raw materials, and Al-Co-TiN was employed as a binder. The effect of particle size of initial cBN powders on the microstructure, relative density, flexural strength, microhardness, fracture toughness and abrasive ratio of sintered PcBN composite were systematically studied. The results showed that synthesized products were mostly made of cBN, TiN, AlN, TiB<sub>2</sub> and CoN phases. The mechanical properties of sintered PcBN composites first increased and then decreased with a reduction in the particle size of cBN powders. When the particle size of initial cBN powder was 1 µm, the binder was observed to be evenly distributed around the cBN grains in the sintered product. Moreover, there was a close bonding between cBN grains and the binder in the sintered product when the particle size of initial cBN powders was 1 µm, consequently, the optimal mechanical properties were achieved. The maximum values for relative density, flexural strength, microhardness, fracture toughness and abrasive ratio were 99.1%, 607 MPa, 47.06 GPa, 6.52 MPa·M<sup>1/2</sup> and 7125, respectively.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of particle size of cubic boron nitride powders on the properties of polycrystalline cubic boron nitride composites\",\"authors\":\"Changjiang Xiao, Haoyu Zheng, Hongjun Tao, Jinming Ma, qunfei Zhang, Lihui Tang\",\"doi\":\"10.1007/s12034-024-03326-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Polycrystalline cubic boron nitride (PcBN) composites were prepared through high-temperature and high-pressure (HTHP) sintering process. Cubic boron nitride (cBN) powders with particle sizes of 0.2, 1, 3, and 8 μm were selected as raw materials, and Al-Co-TiN was employed as a binder. The effect of particle size of initial cBN powders on the microstructure, relative density, flexural strength, microhardness, fracture toughness and abrasive ratio of sintered PcBN composite were systematically studied. The results showed that synthesized products were mostly made of cBN, TiN, AlN, TiB<sub>2</sub> and CoN phases. The mechanical properties of sintered PcBN composites first increased and then decreased with a reduction in the particle size of cBN powders. When the particle size of initial cBN powder was 1 µm, the binder was observed to be evenly distributed around the cBN grains in the sintered product. Moreover, there was a close bonding between cBN grains and the binder in the sintered product when the particle size of initial cBN powders was 1 µm, consequently, the optimal mechanical properties were achieved. The maximum values for relative density, flexural strength, microhardness, fracture toughness and abrasive ratio were 99.1%, 607 MPa, 47.06 GPa, 6.52 MPa·M<sup>1/2</sup> and 7125, respectively.</p></div>\",\"PeriodicalId\":502,\"journal\":{\"name\":\"Bulletin of Materials Science\",\"volume\":\"47 4\",\"pages\":\"\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-10-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12034-024-03326-w\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-024-03326-w","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of particle size of cubic boron nitride powders on the properties of polycrystalline cubic boron nitride composites
Polycrystalline cubic boron nitride (PcBN) composites were prepared through high-temperature and high-pressure (HTHP) sintering process. Cubic boron nitride (cBN) powders with particle sizes of 0.2, 1, 3, and 8 μm were selected as raw materials, and Al-Co-TiN was employed as a binder. The effect of particle size of initial cBN powders on the microstructure, relative density, flexural strength, microhardness, fracture toughness and abrasive ratio of sintered PcBN composite were systematically studied. The results showed that synthesized products were mostly made of cBN, TiN, AlN, TiB2 and CoN phases. The mechanical properties of sintered PcBN composites first increased and then decreased with a reduction in the particle size of cBN powders. When the particle size of initial cBN powder was 1 µm, the binder was observed to be evenly distributed around the cBN grains in the sintered product. Moreover, there was a close bonding between cBN grains and the binder in the sintered product when the particle size of initial cBN powders was 1 µm, consequently, the optimal mechanical properties were achieved. The maximum values for relative density, flexural strength, microhardness, fracture toughness and abrasive ratio were 99.1%, 607 MPa, 47.06 GPa, 6.52 MPa·M1/2 and 7125, respectively.
期刊介绍:
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.