Research of High-Purity Lanthanum Prepared by Zone Refining

In this paper, the purification of lanthanum was studied by using zone-refining technology. The equilibrium distribution coefficient of impurities was calculated using a liquidus slope method to reveal impurities’ distribution properties. Meanwhile, the analysis of impurities’ concentration distribu...

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Detalles Bibliográficos
Autores principales: Yu, Chuang, Pan, Bo, Wang, Zhiqiang, Chen, Dehong, Zhang, Xiaowei, Yang, Wensheng, Zhang, Dongwei, Lu, Wenli
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9267424/
https://www.ncbi.nlm.nih.gov/pubmed/35806727
http://dx.doi.org/10.3390/ma15134603
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author Yu, Chuang
Pan, Bo
Wang, Zhiqiang
Chen, Dehong
Zhang, Xiaowei
Yang, Wensheng
Zhang, Dongwei
Lu, Wenli
author_facet Yu, Chuang
Pan, Bo
Wang, Zhiqiang
Chen, Dehong
Zhang, Xiaowei
Yang, Wensheng
Zhang, Dongwei
Lu, Wenli
author_sort Yu, Chuang
collection PubMed
description In this paper, the purification of lanthanum was studied by using zone-refining technology. The equilibrium distribution coefficient of impurities was calculated using a liquidus slope method to reveal impurities’ distribution properties. Meanwhile, the analysis of impurities’ concentration distribution for Fe and Si has been investigated based on the SPIM model. The calculated findings based on SPIM were found to be in good agreement with the experimental results. In addition, the influence of the zone-refining rate and the number of passes on the purification of lanthanum were studied. It was found that after ten times of zone refining with a zone-refining rate of 5 mm/min, the contents of Fe and Si impurities in metal decreased to 4 and 2 ppm, respectively.
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spelling pubmed-92674242022-07-09 Research of High-Purity Lanthanum Prepared by Zone Refining Yu, Chuang Pan, Bo Wang, Zhiqiang Chen, Dehong Zhang, Xiaowei Yang, Wensheng Zhang, Dongwei Lu, Wenli Materials (Basel) Article In this paper, the purification of lanthanum was studied by using zone-refining technology. The equilibrium distribution coefficient of impurities was calculated using a liquidus slope method to reveal impurities’ distribution properties. Meanwhile, the analysis of impurities’ concentration distribution for Fe and Si has been investigated based on the SPIM model. The calculated findings based on SPIM were found to be in good agreement with the experimental results. In addition, the influence of the zone-refining rate and the number of passes on the purification of lanthanum were studied. It was found that after ten times of zone refining with a zone-refining rate of 5 mm/min, the contents of Fe and Si impurities in metal decreased to 4 and 2 ppm, respectively. MDPI 2022-06-30 /pmc/articles/PMC9267424/ /pubmed/35806727 http://dx.doi.org/10.3390/ma15134603 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
Yu, Chuang
Pan, Bo
Wang, Zhiqiang
Chen, Dehong
Zhang, Xiaowei
Yang, Wensheng
Zhang, Dongwei
Lu, Wenli
Research of High-Purity Lanthanum Prepared by Zone Refining
title Research of High-Purity Lanthanum Prepared by Zone Refining
title_full Research of High-Purity Lanthanum Prepared by Zone Refining
title_fullStr Research of High-Purity Lanthanum Prepared by Zone Refining
title_full_unstemmed Research of High-Purity Lanthanum Prepared by Zone Refining
title_short Research of High-Purity Lanthanum Prepared by Zone Refining
title_sort research of high-purity lanthanum prepared by zone refining
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9267424/
https://www.ncbi.nlm.nih.gov/pubmed/35806727
http://dx.doi.org/10.3390/ma15134603
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