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01-02-2024 | STRUCTURE, PHASE TRANSFORMATIONS, AND DIFFUSION

Capillary Phenomena during Interaction of Copper Melt with Dense and Porous MAX Phases with General Formula (Cr,Mn)2AlC

Authors: S. N. Zhevnenko, M. V. Gorshenkov

Published in: Physics of Metals and Metallography | Issue 2/2024

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Abstract

In this study, we experimentally investigated the interaction of a pure copper melt with dense MAX phase (Cr,Mn)2AlC obtained as a result of sintering by the spark plasma method and with a porous phase compacted by room temperature pressing. The porous phase (porosity 20%) absorbs a molten copper at temperatures above 1200°C. The absorption kinetics is measured using a high speed (HS) thermo-visioning camera and an HS video camera. The experiments are carried out under a vacuum pressure of 10–3 Pa. Scanning electron microscopy studies, microanalyses by the method of X-ray spectroscopy, and X-ray diffraction studies have shown that chemical reactions of the MAX phase with a copper melt lead to the formation of a solution of aluminum and chromium in copper and the decomposition of the MAX phase to stable and/or metastable chromium carbides. The dense sintered sample reacts with the melt though the contact (wetting) angles are more than 100°. The difference between porous and dense samples is in the reaction kinetics. The obtained results are compared with the earlier conducted experiments on wetting of the Cr2AlC MAX phase by a Cu melt (with 0.8 at % Cr). The conditions in the earlier described experiments and the results of determining changes in the chemical composition and the phase composition during capillary experiments indicate that a composite material with a submicrometer structure of chromium carbide impregnated with aluminum bronze can be obtained.

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Literature
3.
go back to reference V. A. Gorshkov, P. A. Miloserdov, N. Yu. Khomenko, and O. M. Miloserdova, “Cast ceramic materials based on MAX phases in the Mn-Cr-Al-C system obtained by the self-propagating high-temperature synthesis method,” in Durability and Structural Materials Science (ZhivKoM-2020): Proc. 5th Int. Sci.-Tech. Conf. in Remote Format, Moscow, 2020 (Inst. Mashinovedeniya im. A.A. Blagonravova Ross. Akad. Nauk, Moscow, 2020), pp. 90–91 [in Russian]. V. A. Gorshkov, P. A. Miloserdov, N. Yu. Khomenko, and O. M. Miloserdova, “Cast ceramic materials based on MAX phases in the Mn-Cr-Al-C system obtained by the self-propagating high-temperature synthesis method,” in Durability and Structural Materials Science (ZhivKoM-2020): Proc. 5th Int. Sci.-Tech. Conf. in Remote Format, Moscow, 2020 (Inst. Mashinovedeniya im. A.A. Blagonravova Ross. Akad. Nauk, Moscow, 2020), pp. 90–91 [in Russian].
Metadata
Title
Capillary Phenomena during Interaction of Copper Melt with Dense and Porous MAX Phases with General Formula (Cr,Mn)2AlC
Authors
S. N. Zhevnenko
M. V. Gorshenkov
Publication date
01-02-2024
Publisher
Pleiades Publishing
Published in
Physics of Metals and Metallography / Issue 2/2024
Print ISSN: 0031-918X
Electronic ISSN: 1555-6190
DOI
https://doi.org/10.1134/S0031918X23602640