Behavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures

Ferrovanadium nitride, which comprises V and N, is an important alloy additive for the production of high-strength low-alloy steel. As an efficient reducing agent and nitrogen source, ammonia gas is widely used in the preparation of metal nitrides. In this study, ferrovanadium nitride alloy powder i...

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Autores principales:	Yongjie Liu, Ran Xin, Donglai Ma, Qingqing Hu, Yue Wang, Zhixiong You
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Reduction Nitridation Phase transformation Ferrovanadium nitride Ammonia gas Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/021c027eb06c4c319f8f630436515b2f
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spelling	oai:doaj.org-article:021c027eb06c4c319f8f630436515b2f2021-11-12T04:35:57ZBehavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures2238-785410.1016/j.jmrt.2021.10.131https://doaj.org/article/021c027eb06c4c319f8f630436515b2f2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421012679https://doaj.org/toc/2238-7854Ferrovanadium nitride, which comprises V and N, is an important alloy additive for the production of high-strength low-alloy steel. As an efficient reducing agent and nitrogen source, ammonia gas is widely used in the preparation of metal nitrides. In this study, ferrovanadium nitride alloy powder is prepared by reducing and nitriding VO2/Fe2O3 in NH3–H2 gas mixtures with different nitriding potentials. Thermodynamic analysis indicate that the reduction and nitridation of VO2 and Fe2O3 is feasible. VO2 is converted into VN, whereas Fe and Fe4N can be formed depend on the reaction conditions. Lower temperatures and higher nitriding potentials are beneficial to the formation of Fe4N. Based on Rietveld refinement analysis, the formation of Fe4N and the atomic occupancy of V and N in vanadium oxynitride, which is associated with the temperature, reaction time, and nitriding potential, is determined. A ferrovanadium nitride alloy powder with an O content of 0.26 wt.% is prepared by reducing and nitriding VO2/Fe2O3 at 900 °C for 1 h at a nitriding potential of 4.4 × 10−3 Pa−0.5.Yongjie LiuRan XinDonglai MaQingqing HuYue WangZhixiong YouElsevierarticleReductionNitridationPhase transformationFerrovanadium nitrideAmmonia gasMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 5046-5058 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Reduction Nitridation Phase transformation Ferrovanadium nitride Ammonia gas Mining engineering. Metallurgy TN1-997
spellingShingle	Reduction Nitridation Phase transformation Ferrovanadium nitride Ammonia gas Mining engineering. Metallurgy TN1-997 Yongjie Liu Ran Xin Donglai Ma Qingqing Hu Yue Wang Zhixiong You Behavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures
description	Ferrovanadium nitride, which comprises V and N, is an important alloy additive for the production of high-strength low-alloy steel. As an efficient reducing agent and nitrogen source, ammonia gas is widely used in the preparation of metal nitrides. In this study, ferrovanadium nitride alloy powder is prepared by reducing and nitriding VO2/Fe2O3 in NH3–H2 gas mixtures with different nitriding potentials. Thermodynamic analysis indicate that the reduction and nitridation of VO2 and Fe2O3 is feasible. VO2 is converted into VN, whereas Fe and Fe4N can be formed depend on the reaction conditions. Lower temperatures and higher nitriding potentials are beneficial to the formation of Fe4N. Based on Rietveld refinement analysis, the formation of Fe4N and the atomic occupancy of V and N in vanadium oxynitride, which is associated with the temperature, reaction time, and nitriding potential, is determined. A ferrovanadium nitride alloy powder with an O content of 0.26 wt.% is prepared by reducing and nitriding VO2/Fe2O3 at 900 °C for 1 h at a nitriding potential of 4.4 × 10−3 Pa−0.5.
format	article
author	Yongjie Liu Ran Xin Donglai Ma Qingqing Hu Yue Wang Zhixiong You
author_facet	Yongjie Liu Ran Xin Donglai Ma Qingqing Hu Yue Wang Zhixiong You
author_sort	Yongjie Liu
title	Behavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures
title_short	Behavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures
title_full	Behavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures
title_fullStr	Behavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures
title_full_unstemmed	Behavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures
title_sort	behavior of synchronous reduction and nitridation of iron/vanadium oxides with nh3–h2 mixtures
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/021c027eb06c4c319f8f630436515b2f
work_keys_str_mv	AT yongjieliu behaviorofsynchronousreductionandnitridationofironvanadiumoxideswithnh3h2mixtures AT ranxin behaviorofsynchronousreductionandnitridationofironvanadiumoxideswithnh3h2mixtures AT donglaima behaviorofsynchronousreductionandnitridationofironvanadiumoxideswithnh3h2mixtures AT qingqinghu behaviorofsynchronousreductionandnitridationofironvanadiumoxideswithnh3h2mixtures AT yuewang behaviorofsynchronousreductionandnitridationofironvanadiumoxideswithnh3h2mixtures AT zhixiongyou behaviorofsynchronousreductionandnitridationofironvanadiumoxideswithnh3h2mixtures
_version_	1718431208070709248

Behavior of synchronous reduction and nitridation of iron/vanadium oxides with NH3–H2 mixtures

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