{"title":"Regularities of Combustion of Ti + 2B Mixture: Mechanical Activation of Boron","authors":"Yu. V. Bogatov, V. A. Shcherbakov","doi":"10.3103/S1061386224700432","DOIUrl":null,"url":null,"abstract":"<p>TiB<sub>2</sub> ceramics were produced by forced SHS compaction. The influence of preliminary mechanical activation of boron powder on the properties and combustion characteristics of Ti + 2B reaction mixture was studied. Mechanically activated boron powder was shown to become plastic under a pressure above 30 MPa. In mixtures with titanium, activated boron acted as a lubricant allowing free movement of coarser titanium particles relative to each other and consolidation to higher density values (0.8) without intensive growth of contact surface between the titanium particles (Ti–Ti). Mechanical activation was found to increase the contact surface between reactants (Ti–B) and consequently, the combustion temperature up to 3000°C.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"65 - 70"},"PeriodicalIF":0.6000,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Self-Propagating High-Temperature Synthesis","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1061386224700432","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
TiB2 ceramics were produced by forced SHS compaction. The influence of preliminary mechanical activation of boron powder on the properties and combustion characteristics of Ti + 2B reaction mixture was studied. Mechanically activated boron powder was shown to become plastic under a pressure above 30 MPa. In mixtures with titanium, activated boron acted as a lubricant allowing free movement of coarser titanium particles relative to each other and consolidation to higher density values (0.8) without intensive growth of contact surface between the titanium particles (Ti–Ti). Mechanical activation was found to increase the contact surface between reactants (Ti–B) and consequently, the combustion temperature up to 3000°C.
期刊介绍：
International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.
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