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Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying
In the present work, complex powder alloys containing spinel as a minor phase were produced by mechanical alloying in a high-energy planetary ball mill from a 33Al–45Cu–22Fe (at.%) powder blend. These alloys show characteristics suitable for the synthesis of promising catalysts. The alloying was con...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8951430/ https://www.ncbi.nlm.nih.gov/pubmed/35329537 http://dx.doi.org/10.3390/ma15062087 |
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author | Tikhov, Serguei Valeev, Konstantin Cherepanova, Svetlana Zaikovskii, Vladimir Salanov, Aleksei Sadykov, Vladislav Dudina, Dina Lomovsky, Oleg Petrov, Sergey Smorygo, Oleg Gokhale, Amol |
author_facet | Tikhov, Serguei Valeev, Konstantin Cherepanova, Svetlana Zaikovskii, Vladimir Salanov, Aleksei Sadykov, Vladislav Dudina, Dina Lomovsky, Oleg Petrov, Sergey Smorygo, Oleg Gokhale, Amol |
author_sort | Tikhov, Serguei |
collection | PubMed |
description | In the present work, complex powder alloys containing spinel as a minor phase were produced by mechanical alloying in a high-energy planetary ball mill from a 33Al–45Cu–22Fe (at.%) powder blend. These alloys show characteristics suitable for the synthesis of promising catalysts. The alloying was conducted in two stages: at the first stage, a Cu+Fe powder mixture was ball-milled for 90 min; at the second stage, Al was added, and the milling process was continued for another 24 min. The main products of mechanical alloying formed at each stage were studied using X-ray diffraction phase analysis, Mössbauer spectroscopy, transmission electron microscopy, and energy-dispersive spectroscopy. At the end of the first stage, crystalline iron was not found. The main product of the first stage was a metastable Cu(Fe) solid solution with a face-centered cubic structure. At the second stage, the Cu(Fe) solid solution transformed to Cu(Al), several Fe-containing amorphous phases, and a spinel phase. The products of the two-stage process were different from those of the single-stage mechanical alloying of the ternary elemental powder mixture; the formation of undesirable intermediate phases was avoided, which ensured excellent composition uniformity. A sequence of solid-state reactions occurring during mechanical alloying was proposed. Mesopores and a spinel phase were the features of the two-stage milled material (both are desirable for the target catalyst). |
format | Online Article Text |
id | pubmed-8951430 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-89514302022-03-26 Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying Tikhov, Serguei Valeev, Konstantin Cherepanova, Svetlana Zaikovskii, Vladimir Salanov, Aleksei Sadykov, Vladislav Dudina, Dina Lomovsky, Oleg Petrov, Sergey Smorygo, Oleg Gokhale, Amol Materials (Basel) Article In the present work, complex powder alloys containing spinel as a minor phase were produced by mechanical alloying in a high-energy planetary ball mill from a 33Al–45Cu–22Fe (at.%) powder blend. These alloys show characteristics suitable for the synthesis of promising catalysts. The alloying was conducted in two stages: at the first stage, a Cu+Fe powder mixture was ball-milled for 90 min; at the second stage, Al was added, and the milling process was continued for another 24 min. The main products of mechanical alloying formed at each stage were studied using X-ray diffraction phase analysis, Mössbauer spectroscopy, transmission electron microscopy, and energy-dispersive spectroscopy. At the end of the first stage, crystalline iron was not found. The main product of the first stage was a metastable Cu(Fe) solid solution with a face-centered cubic structure. At the second stage, the Cu(Fe) solid solution transformed to Cu(Al), several Fe-containing amorphous phases, and a spinel phase. The products of the two-stage process were different from those of the single-stage mechanical alloying of the ternary elemental powder mixture; the formation of undesirable intermediate phases was avoided, which ensured excellent composition uniformity. A sequence of solid-state reactions occurring during mechanical alloying was proposed. Mesopores and a spinel phase were the features of the two-stage milled material (both are desirable for the target catalyst). MDPI 2022-03-11 /pmc/articles/PMC8951430/ /pubmed/35329537 http://dx.doi.org/10.3390/ma15062087 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Tikhov, Serguei Valeev, Konstantin Cherepanova, Svetlana Zaikovskii, Vladimir Salanov, Aleksei Sadykov, Vladislav Dudina, Dina Lomovsky, Oleg Petrov, Sergey Smorygo, Oleg Gokhale, Amol Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying |
title | Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying |
title_full | Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying |
title_fullStr | Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying |
title_full_unstemmed | Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying |
title_short | Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying |
title_sort | elimination of composition segregation in 33al–45cu–22fe (at.%) powder by two-stage high-energy mechanical alloying |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8951430/ https://www.ncbi.nlm.nih.gov/pubmed/35329537 http://dx.doi.org/10.3390/ma15062087 |
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