Sol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys

Abstract A reduction in the particle size is expected to improve the properties and increase the application potential of high-entropy alloys. Therefore, in this study, a novel sol–gel autocombustion technique was first used to synthesize high-entropy alloys. The average grain size of the prepared n...

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Autores principales:	Bo Niu, Fan Zhang, Hang Ping, Na Li, Jieyang Zhou, Liwen Lei, Jingjing Xie, Jinyong Zhang, Weimin Wang, Zhengyi Fu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2b5b0e2b88474a0a8e6c10340ed912c6
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spelling	oai:doaj.org-article:2b5b0e2b88474a0a8e6c10340ed912c62021-12-02T11:52:36ZSol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys10.1038/s41598-017-03644-62045-2322https://doaj.org/article/2b5b0e2b88474a0a8e6c10340ed912c62017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03644-6https://doaj.org/toc/2045-2322Abstract A reduction in the particle size is expected to improve the properties and increase the application potential of high-entropy alloys. Therefore, in this study, a novel sol–gel autocombustion technique was first used to synthesize high-entropy alloys. The average grain size of the prepared nanocrystalline CoCrCuNiAl high-entropy alloys showed was 14 nm with an excellent and uniform dispersion, exhibiting a distinct magnetic behavior similar to the superparamagnetic behavior. We show that the metal nitrates first form (Co,Cu,Mg,Ni,Zn)O high-entropy oxides, and then in situ reduce to CoCrCuNiAl high-entropy alloys by the reducing gases, and the chelation between citric acid and the metal ions and the in situ chemical reactions are the dominant reaction mechanisms. We demonstrate that the sol–gel autocombustion process is an efficient way to synthesize solid solution alloys eluding the restriction of a high mixing entropy.Bo NiuFan ZhangHang PingNa LiJieyang ZhouLiwen LeiJingjing XieJinyong ZhangWeimin WangZhengyi FuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bo Niu Fan Zhang Hang Ping Na Li Jieyang Zhou Liwen Lei Jingjing Xie Jinyong Zhang Weimin Wang Zhengyi Fu Sol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys
description	Abstract A reduction in the particle size is expected to improve the properties and increase the application potential of high-entropy alloys. Therefore, in this study, a novel sol–gel autocombustion technique was first used to synthesize high-entropy alloys. The average grain size of the prepared nanocrystalline CoCrCuNiAl high-entropy alloys showed was 14 nm with an excellent and uniform dispersion, exhibiting a distinct magnetic behavior similar to the superparamagnetic behavior. We show that the metal nitrates first form (Co,Cu,Mg,Ni,Zn)O high-entropy oxides, and then in situ reduce to CoCrCuNiAl high-entropy alloys by the reducing gases, and the chelation between citric acid and the metal ions and the in situ chemical reactions are the dominant reaction mechanisms. We demonstrate that the sol–gel autocombustion process is an efficient way to synthesize solid solution alloys eluding the restriction of a high mixing entropy.
format	article
author	Bo Niu Fan Zhang Hang Ping Na Li Jieyang Zhou Liwen Lei Jingjing Xie Jinyong Zhang Weimin Wang Zhengyi Fu
author_facet	Bo Niu Fan Zhang Hang Ping Na Li Jieyang Zhou Liwen Lei Jingjing Xie Jinyong Zhang Weimin Wang Zhengyi Fu
author_sort	Bo Niu
title	Sol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys
title_short	Sol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys
title_full	Sol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys
title_fullStr	Sol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys
title_full_unstemmed	Sol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys
title_sort	sol-gel autocombustion synthesis of nanocrystalline high-entropy alloys
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2b5b0e2b88474a0a8e6c10340ed912c6
work_keys_str_mv	AT boniu solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT fanzhang solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT hangping solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT nali solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT jieyangzhou solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT liwenlei solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT jingjingxie solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT jinyongzhang solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT weiminwang solgelautocombustionsynthesisofnanocrystallinehighentropyalloys AT zhengyifu solgelautocombustionsynthesisofnanocrystallinehighentropyalloys
_version_	1718394972537880576

Sol-gel Autocombustion Synthesis of Nanocrystalline High-entropy Alloys

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