Microhardness and structural characteristics of hot-pressed composites AlB12-Al2O3

Editorial Board PCSS Journal; I.E. Krasikova; I.V. Krasikov; V.B. Muratov; V.V. Garbuz; T.V. Khomko; O.O. Vasiliev

doi:10.15330/pcss.27.2.433-439

Authors

I.E. Krasikova Frantsevich Institute for Problems of Materials Science NASU, Kyiv, Ukraine
I.V. Krasikov Frantsevich Institute for Problems of Materials Science NASU, Kyiv, Ukraine
V.B. Muratov Frantsevich Institute for Problems of Materials Science NASU, Kyiv, Ukraine
V.V. Garbuz Frantsevich Institute for Problems of Materials Science NASU, Kyiv, Ukraine
T.V. Khomko Frantsevich Institute for Problems of Materials Science NASU, Kyiv, Ukraine
O.O. Vasiliev Frantsevich Institute for Problems of Materials Science NASU, Kyiv, Ukraine

DOI:

https://doi.org/10.15330/pcss.27.2.433-439

Keywords:

multifractality, electron microscopy, image analysis, hot pressing, composites, aluminum dodecaboride, aluminum oxide

Abstract

The microhardness of ceramics in the AlB12-Al2O3 system was studied across a wide range of component ratios. Dense composite samples were fabricated using hot pressing with nano- and submicron-sized powders of AlB12 and α-Al2O3 synthesized in-house. A nonlinear relationship between hardness and composite composition was identified, suggesting a reinforcing effect due to interfacial surface interactions. A proprietary software tool developed by the authors was employed to compute the multifractal characteristics of microstructures captured via electron microscopy. A correlation was established between the microhardness of the composites and the multifractal parameters of the interfacial structures.

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