The most important applications of ZrB2


The most important applications of ZrB2 are in the high-temperature fields where it is used as a refractory material; hence, the effect of alumina on the oxidation rate of ZrB2 ceramic should be essentially investigated. Few reports exist on the high-temperature oxidation resistance of ZrB2– Al2O3 composites. Recently, Li et al. Examined the oxidation kinetics of Al2O3/ZrB2/ZrO2 composite prepared by mixing and hot-pressing. Ceramic matrix composites of high-temperature borides and other industrial ceramic materials have been interesting in recent years. Alumina is one of the most commonly used ceramics in various applications such as grinding media, cutting tools, crucibles, tube furnaces, and liners, owing to its several intrinsic characteristics like high hardness, high melting point, good chemical inertness, high wear resistance, and low cost. Nevertheless, some mechanical properties of alumina are not good enough for several applications. The mechanical strength of these materials can significantly improve by adding strong compounds like zirconium diboride. TiB2–Al2O3 composite prepared by mixing alumina and diboride powders showed excellent mechanical properties. All research works performed on the ZrB2 synthesis using Al as a reducing agent were carried out by thermally combustive SHS methods rather than MSR reactions. Furthermore, the reaction mechanism has not also been clearly explained. The aim of the present work, therefore, was to investigate the mechanosynthesis of ZrB2–Al2O3 powder by aluminothermic reduction using ZrO2 and B2O3 as starting materials and using mechanically induced self-sustaining reaction (MSR), which has not been reported so far. The mechanistic explanation of ZrB2 formation in this system was another target, which has been accomplished through the investigation of sub-reactions and the study of the influence of the stoichiometry of the reactants. If you are looking for high quality, high purity and cost-effective Zirconium diboride, or if you require the latest price of Zirconium diboride, please feel free to email contact mis-asia.

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