Modern Problems of Materials Science

Microstructure and Granulometric Characteristics of Heat-Resistant Alloy Powders

Ihor Lemishka1, Taras Kovbasyuk1, Andrii Andreiliv1, Olha Halienkova2, Oksana Melashchenko3

1. Lviv Polytechnic National University, Ukraine
2. Department of the Chief Metallurgist, JSC «Ivchenko-Progress», Ukraine
3. A. Pidgorny Institute of Power Machines and Systems of NAS of Ukraine

https://doi.org/10.15407/msse2025.01.044

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Keywords

heat-resistant alloy, microstructure, granulometric characteristics, powder metallurgy, dendritic structure, polydispersity

Abstract

The paper studies the microstructure and granulometric characteristics of the powder of the heat-resistant chromium-nickel alloy VZh98, obtained by the method of centrifugal plasma spraying of the electrode. According to the results of scanning electron microscopy, the spherical morphology of the particles with a dendritic surface structure was established. The particle size distribution in the fractions of 63–200 μm and ≤63 μm was analysed, the polydispersity indices and average particle diameters for each fraction were determined.

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