Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen

Herein, the evolution of reduction process of ultrafine tungsten powder in industrial conditions was investigated. The transition process of morphology and composition was examined via SEM, XRD, and calcination experiments. The results show that the reduction sequence of WO2.9 was WO2.9 → WO2.72 → W...

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Autores principales:	Wang Yue, Long Ben Fu, Liu Chun Yu, Lin Gao An
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	ultrafine tungsten powder hydrogen reduction morphology evolution homogeneity Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
Acceso en línea:	https://doaj.org/article/18c0f24566e64c92ae1be5de3bb677f9
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spelling	oai:doaj.org-article:18c0f24566e64c92ae1be5de3bb677f92021-12-05T14:10:50ZEvolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen2191-032410.1515/htmp-2021-0017https://doaj.org/article/18c0f24566e64c92ae1be5de3bb677f92021-06-01T00:00:00Zhttps://doi.org/10.1515/htmp-2021-0017https://doaj.org/toc/2191-0324Herein, the evolution of reduction process of ultrafine tungsten powder in industrial conditions was investigated. The transition process of morphology and composition was examined via SEM, XRD, and calcination experiments. The results show that the reduction sequence of WO2.9 was WO2.9 → WO2.72 → WO2 → W on the surface, but WO2.9 → WO2 → W inside the oxide particles. With the aid of chemical vapor transport of WOx(OH)y, surface morphology transformed into rod-like, star-shaped cracking, floret, irregularly fibrous structure, and finally, spherical tungsten particles.Wang YueLong Ben FuLiu Chun YuLin Gao AnDe Gruyterarticleultrafine tungsten powderhydrogen reductionmorphology evolutionhomogeneityTechnologyTChemical technologyTP1-1185Chemicals: Manufacture, use, etc.TP200-248ENHigh Temperature Materials and Processes, Vol 40, Iss 1, Pp 171-177 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ultrafine tungsten powder hydrogen reduction morphology evolution homogeneity Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
spellingShingle	ultrafine tungsten powder hydrogen reduction morphology evolution homogeneity Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248 Wang Yue Long Ben Fu Liu Chun Yu Lin Gao An Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen
description	Herein, the evolution of reduction process of ultrafine tungsten powder in industrial conditions was investigated. The transition process of morphology and composition was examined via SEM, XRD, and calcination experiments. The results show that the reduction sequence of WO2.9 was WO2.9 → WO2.72 → WO2 → W on the surface, but WO2.9 → WO2 → W inside the oxide particles. With the aid of chemical vapor transport of WOx(OH)y, surface morphology transformed into rod-like, star-shaped cracking, floret, irregularly fibrous structure, and finally, spherical tungsten particles.
format	article
author	Wang Yue Long Ben Fu Liu Chun Yu Lin Gao An
author_facet	Wang Yue Long Ben Fu Liu Chun Yu Lin Gao An
author_sort	Wang Yue
title	Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen
title_short	Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen
title_full	Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen
title_fullStr	Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen
title_full_unstemmed	Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen
title_sort	evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/18c0f24566e64c92ae1be5de3bb677f9
work_keys_str_mv	AT wangyue evolutionofreductionprocessfromtungstenoxidetoultrafinetungstenpowderviahydrogen AT longbenfu evolutionofreductionprocessfromtungstenoxidetoultrafinetungstenpowderviahydrogen AT liuchunyu evolutionofreductionprocessfromtungstenoxidetoultrafinetungstenpowderviahydrogen AT lingaoan evolutionofreductionprocessfromtungstenoxidetoultrafinetungstenpowderviahydrogen
_version_	1718371661270482944

Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen

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