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Cr含量对低合金钢高温氧化行为及机理的影响

Influence of Cr Content on the High-Temperature Oxidation Behavior and Mechanism of Low-Alloy Steels.

作者信息

Kwon Gi-Hoon, Park Hyunjun, Choi Byoungho, Lee Young-Kook, Moon Kyoungil

机构信息

Heat & Surface Technology R&D Group, Korea Institute of Industrial Technology, Siheung 15014, Republic of Korea.

Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.

出版信息

Materials (Basel). 2023 Jul 12;16(14):4964. doi: 10.3390/ma16144964.

DOI:10.3390/ma16144964
PMID:37512239
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10383239/
Abstract

The high-temperature oxidation behavior of low-carbon steel (AISI 1015, AISI 8617, AISI 4115) was investigated over the temperature range from 600 to 1000 °C in humid air containing 25% water vapor. Mass gain of oxidation measurement was performed to study the oxidation kinetics. The microstructure, thickness, and composition of the oxide scale formed were investigated via optical microscope (OM), scanning electron microscope (SEM) equipped with an energy dispersive spectrometer (EDS), X-ray diffraction (XRD), and electron probe microanalyzer (EPMA). The oxidation process was performed from 2 to 100 min. As the oxidation time increased, the trend of mass gain per unit area switched from a linear to a parabolic law, regardless of the steel grade used. As the chromium content increased, the duration of time during which the oxidation rate followed a linear relationship decreased. In the low-alloy steel with higher chromium content, the thickness of the mixed oxide layer containing Cr increased and the oxidation rate decreased at all oxidation temperatures.

摘要

研究了低碳钢（AISI 1015、AISI 8617、AISI 4115）在含有25%水蒸气的潮湿空气中，温度范围为600至1000°C时的高温氧化行为。进行了氧化质量增益测量以研究氧化动力学。通过光学显微镜（OM）、配备能谱仪（EDS）的扫描电子显微镜（SEM）、X射线衍射（XRD）和电子探针微分析仪（EPMA）研究了形成的氧化皮的微观结构、厚度和成分。氧化过程持续2至100分钟。随着氧化时间的增加，无论使用何种钢种，单位面积质量增益趋势都从线性转变为抛物线规律。随着铬含量的增加，氧化速率呈线性关系的持续时间缩短。在铬含量较高的低合金钢中，含Cr的混合氧化层厚度增加，且在所有氧化温度下氧化速率均降低。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0410/10383239/0fbded13164c/materials-16-04964-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0410/10383239/0fbded13164c/materials-16-04964-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0410/10383239/be338860c5a9/materials-16-04964-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0410/10383239/9891c2565572/materials-16-04964-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0410/10383239/43e9e125003e/materials-16-04964-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0410/10383239/85bcace1fc8d/materials-16-04964-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0410/10383239/a70af6295987/materials-16-04964-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0410/10383239/0fbded13164c/materials-16-04964-g011.jpg

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本文引用的文献

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