P. V. Mazur, O. M. Grigoriev, L. M. Melakh, I. V. Kozak, M. V. Karpets, D. V. Vedel
{"title":"B3Si对B4C陶瓷结构和性能的影响","authors":"P. V. Mazur, O. M. Grigoriev, L. M. Melakh, I. V. Kozak, M. V. Karpets, D. V. Vedel","doi":"10.3103/S1063457623030176","DOIUrl":null,"url":null,"abstract":"<p>Dense composite ceramics based on B<sub>4</sub>C with an addition of 10 to 50 wt % of B<sub>3</sub>Si were obtained by hot pressing. An increased amount of boron silicide decreases the hot pressing temperature to obtain a high-density material. We found a hot pressing temperature, optimal for each of the compositions and possess the highest hardness, which is associated with the formation of a fine-grained structure. Densification occurs during reactive hot pressing, which consists in the decomposition of B<sub>3</sub>Si into Si and BSi<sub><i>n</i></sub> (<i>n</i> = 12–23) and further interaction with B<sub>4</sub>C to form SiC and B<sub>12</sub>(Si,B,C)<sub>3</sub>. The modification of boron carbide with silicon leads to the stabilization of hardness at ~24–26 GPa in the load range from 2 to 200 N. The highest bending strength of ~500 MPa is observed for samples with up to 20 wt % of B<sub>3</sub>Si. The optimal composition, which combines high values of hardness and flexural strength, is B<sub>4</sub>C–20 wt % B<sub>3</sub>Si.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 3","pages":"175 - 185"},"PeriodicalIF":1.2000,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of B3Si on the Structure and Properties of B4C Ceramics\",\"authors\":\"P. V. Mazur, O. M. Grigoriev, L. M. Melakh, I. V. Kozak, M. V. Karpets, D. V. Vedel\",\"doi\":\"10.3103/S1063457623030176\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Dense composite ceramics based on B<sub>4</sub>C with an addition of 10 to 50 wt % of B<sub>3</sub>Si were obtained by hot pressing. An increased amount of boron silicide decreases the hot pressing temperature to obtain a high-density material. We found a hot pressing temperature, optimal for each of the compositions and possess the highest hardness, which is associated with the formation of a fine-grained structure. Densification occurs during reactive hot pressing, which consists in the decomposition of B<sub>3</sub>Si into Si and BSi<sub><i>n</i></sub> (<i>n</i> = 12–23) and further interaction with B<sub>4</sub>C to form SiC and B<sub>12</sub>(Si,B,C)<sub>3</sub>. The modification of boron carbide with silicon leads to the stabilization of hardness at ~24–26 GPa in the load range from 2 to 200 N. The highest bending strength of ~500 MPa is observed for samples with up to 20 wt % of B<sub>3</sub>Si. The optimal composition, which combines high values of hardness and flexural strength, is B<sub>4</sub>C–20 wt % B<sub>3</sub>Si.</p>\",\"PeriodicalId\":670,\"journal\":{\"name\":\"Journal of Superhard Materials\",\"volume\":\"45 3\",\"pages\":\"175 - 185\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2023-07-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Superhard Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1063457623030176\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Superhard Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.3103/S1063457623030176","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of B3Si on the Structure and Properties of B4C Ceramics
Dense composite ceramics based on B4C with an addition of 10 to 50 wt % of B3Si were obtained by hot pressing. An increased amount of boron silicide decreases the hot pressing temperature to obtain a high-density material. We found a hot pressing temperature, optimal for each of the compositions and possess the highest hardness, which is associated with the formation of a fine-grained structure. Densification occurs during reactive hot pressing, which consists in the decomposition of B3Si into Si and BSin (n = 12–23) and further interaction with B4C to form SiC and B12(Si,B,C)3. The modification of boron carbide with silicon leads to the stabilization of hardness at ~24–26 GPa in the load range from 2 to 200 N. The highest bending strength of ~500 MPa is observed for samples with up to 20 wt % of B3Si. The optimal composition, which combines high values of hardness and flexural strength, is B4C–20 wt % B3Si.
期刊介绍：
Journal of Superhard Materials presents up-to-date results of basic and applied research on production, properties, and applications of superhard materials and related tools. It publishes the results of fundamental research on physicochemical processes of forming and growth of single-crystal, polycrystalline, and dispersed materials, diamond and diamond-like films; developments of methods for spontaneous and controlled synthesis of superhard materials and methods for static, explosive and epitaxial synthesis. The focus of the journal is large single crystals of synthetic diamonds; elite grinding powders and micron powders of synthetic diamonds and cubic boron nitride; polycrystalline and composite superhard materials based on diamond and cubic boron nitride; diamond and carbide tools for highly efficient metal-working, boring, stone-working, coal mining and geological exploration; articles of ceramic; polishing pastes for high-precision optics; precision lathes for diamond turning; technologies of precise machining of metals, glass, and ceramics. The journal covers all fundamental and technological aspects of synthesis, characterization, properties, devices and applications of these materials. The journal welcomes manuscripts from all countries in the English language.
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