High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel
In the case of Fe−1Cr−0.2Si steel, tube furnace oxidation was carried out for 120 min and 30 min. These studies, along with the high-temperature oxidation behavior of Fe−1Cr−0.2Si steel, were examined from 700 to 1100 °C. It has been observed that wit...
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doaj-b616be164f074f32be1dfc2f8a27056e2020-11-25T01:42:55ZengMDPI AGMaterials1996-19442020-01-0113350910.3390/ma13030509ma13030509High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si SteelMingxin Hao0Bin Sun1Hao Wang2School of Mechanical Engineering, Shenyang University, 21 Wanghua South Street, Shenyang 110044, ChinaSchool of Mechanical Engineering, Shenyang University, 21 Wanghua South Street, Shenyang 110044, ChinaState key laboratory of Rolling and Automation, Northeastern University, 11 Wenhua Road, Shenyang 110819, ChinaIn the case of Fe−1Cr−0.2Si steel, tube furnace oxidation was carried out for 120 min and 30 min. These studies, along with the high-temperature oxidation behavior of Fe−1Cr−0.2Si steel, were examined from 700 to 1100 °C. It has been observed that with an increase in the oxidation time, the oxidation weight gain per unit area of Fe−1Cr−0.2Si steel changed from a linear to a parabolic relationship. The time was shortened when the oxidation phase was linear. When the oxidation temperature exceeded 900 °C, the value of <i>W<sub>Transition</sub></i> decreased, and the oxidation rule changed. It could be considered that overall, the iron oxide structure of Fe−1Cr−0.2Si steel is divided into two layers. The formation of an outer oxide of iron is mainly caused by the outward diffusion of cation, while the inward diffusion of O ion forms the inner oxides of chromium and silicon. As the temperature increases, the thickness of the outer iron oxide gradually increases, and the thickness ratio of the inner mixed layers of chromium- and silicon-rich oxides decreases; however, the degree of enrichment of Cr and Si in the mixed layer increases. After high-temperature oxidation, Cr and Si did not form a composite oxide but were mechanically mixed in the form of FeCr<sub>2</sub>O<sub>4</sub> and Fe<sub>2</sub>SiO<sub>4</sub>, and no significant delamination occurred.https://www.mdpi.com/1996-1944/13/3/509high-temperature oxidationoxide scaleweight gainactivation energy for oxidationcr oxide |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mingxin Hao Bin Sun Hao Wang |
spellingShingle |
Mingxin Hao Bin Sun Hao Wang High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel Materials high-temperature oxidation oxide scale weight gain activation energy for oxidation cr oxide |
author_facet |
Mingxin Hao Bin Sun Hao Wang |
author_sort |
Mingxin Hao |
title |
High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel |
title_short |
High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel |
title_full |
High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel |
title_fullStr |
High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel |
title_full_unstemmed |
High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel |
title_sort |
high-temperature oxidation behavior of fe–1cr–0.2si steel |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2020-01-01 |
description |
In the case of Fe−1Cr−0.2Si steel, tube furnace oxidation was carried out for 120 min and 30 min. These studies, along with the high-temperature oxidation behavior of Fe−1Cr−0.2Si steel, were examined from 700 to 1100 °C. It has been observed that with an increase in the oxidation time, the oxidation weight gain per unit area of Fe−1Cr−0.2Si steel changed from a linear to a parabolic relationship. The time was shortened when the oxidation phase was linear. When the oxidation temperature exceeded 900 °C, the value of <i>W<sub>Transition</sub></i> decreased, and the oxidation rule changed. It could be considered that overall, the iron oxide structure of Fe−1Cr−0.2Si steel is divided into two layers. The formation of an outer oxide of iron is mainly caused by the outward diffusion of cation, while the inward diffusion of O ion forms the inner oxides of chromium and silicon. As the temperature increases, the thickness of the outer iron oxide gradually increases, and the thickness ratio of the inner mixed layers of chromium- and silicon-rich oxides decreases; however, the degree of enrichment of Cr and Si in the mixed layer increases. After high-temperature oxidation, Cr and Si did not form a composite oxide but were mechanically mixed in the form of FeCr<sub>2</sub>O<sub>4</sub> and Fe<sub>2</sub>SiO<sub>4</sub>, and no significant delamination occurred. |
topic |
high-temperature oxidation oxide scale weight gain activation energy for oxidation cr oxide |
url |
https://www.mdpi.com/1996-1944/13/3/509 |
work_keys_str_mv |
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