Ti + 2B混合物燃烧规律：硼的机械活化

IF 0.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI:10.3103/S1061386224700432

Yu. V. Bogatov, V. A. Shcherbakov

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引用次数: 0

摘要

采用强制SHS压实法制备TiB2陶瓷。研究了硼粉的初步机械活化对Ti + 2B反应混合物性能和燃烧特性的影响。机械活化的硼粉在30 MPa以上的压力下呈现塑性。在与钛的混合物中，活性硼充当润滑剂，允许粗钛颗粒相对于其他颗粒自由移动，并固结到更高的密度值（0.8），而钛颗粒之间的接触面（Ti-Ti）不会强烈增长。发现机械活化增加了反应物（Ti-B）之间的接触面，因此，燃烧温度高达3000°C。

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Regularities of Combustion of Ti + 2B Mixture: Mechanical Activation of Boron

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.

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来源期刊

International Journal of Self-Propagating High-Temperature Synthesis MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

33.30%

发文量

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.