Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron

The oxidation mechanism of vermicular graphite cast iron was studied. The oxidation reaction starts from graphites and diffused slowly. Graphites in vermicular graphite are interconnected, coral-like clusters, providing the main oxidation core and channel. The worm-like graphites on the surface are...

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Detalles Bibliográficos
Autores principales: Guo, Qiaoqin, Yang, Zhong, Guo, Ding, Tao, Dong, Guo, Yongchun, Li, Jianping, Bai, Yaping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6804170/
https://www.ncbi.nlm.nih.gov/pubmed/31557905
http://dx.doi.org/10.3390/ma12193130
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author Guo, Qiaoqin
Yang, Zhong
Guo, Ding
Tao, Dong
Guo, Yongchun
Li, Jianping
Bai, Yaping
author_facet Guo, Qiaoqin
Yang, Zhong
Guo, Ding
Tao, Dong
Guo, Yongchun
Li, Jianping
Bai, Yaping
author_sort Guo, Qiaoqin
collection PubMed
description The oxidation mechanism of vermicular graphite cast iron was studied. The oxidation reaction starts from graphites and diffused slowly. Graphites in vermicular graphite are interconnected, coral-like clusters, providing the main oxidation core and channel. The worm-like graphites on the surface are mostly oxidized and form oxide affected zones. The oxide films are composed of a loose oxide layer with the phases of Fe(3)O(4), Fe(2)O(3), and FeO, and a dense passivation layer with FeO and Fe(2)SiO(4). After oxidation, pearlites in the vermicular graphite cast iron are decomposed into ferrite and cementite at high temperatures.
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spelling pubmed-68041702019-11-18 Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron Guo, Qiaoqin Yang, Zhong Guo, Ding Tao, Dong Guo, Yongchun Li, Jianping Bai, Yaping Materials (Basel) Article The oxidation mechanism of vermicular graphite cast iron was studied. The oxidation reaction starts from graphites and diffused slowly. Graphites in vermicular graphite are interconnected, coral-like clusters, providing the main oxidation core and channel. The worm-like graphites on the surface are mostly oxidized and form oxide affected zones. The oxide films are composed of a loose oxide layer with the phases of Fe(3)O(4), Fe(2)O(3), and FeO, and a dense passivation layer with FeO and Fe(2)SiO(4). After oxidation, pearlites in the vermicular graphite cast iron are decomposed into ferrite and cementite at high temperatures. MDPI 2019-09-25 /pmc/articles/PMC6804170/ /pubmed/31557905 http://dx.doi.org/10.3390/ma12193130 Text en © 2019 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Guo, Qiaoqin
Yang, Zhong
Guo, Ding
Tao, Dong
Guo, Yongchun
Li, Jianping
Bai, Yaping
Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron
title Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron
title_full Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron
title_fullStr Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron
title_full_unstemmed Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron
title_short Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron
title_sort research on the oxidation mechanism of vermicular graphite cast iron
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6804170/
https://www.ncbi.nlm.nih.gov/pubmed/31557905
http://dx.doi.org/10.3390/ma12193130
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