{"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","doi":"10.1134/s0031918x23602640","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this study, we experimentally investigated the interaction of a pure copper melt with dense MAX phase (Cr,Mn)<sub>2</sub>AlC 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<sup>–3</sup> 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 Cr<sub>2</sub>AlC 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.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"357 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Metals and Metallography","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1134/s0031918x23602640","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
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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.
期刊介绍：
The Physics of Metals and Metallography (Fizika metallov i metallovedenie) was founded in 1955 by the USSR Academy of Sciences. Its scientific profile involves the theory of metals and metal alloys, their electrical and magnetic properties, as well as their structure, phase transformations, and principal mechanical properties. The journal also publishes scientific reviews and papers written by experts involved in fundamental, application, and technological studies. The annual volume of publications amounts to some 250 papers submitted from 100 leading national scientific institutions.
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