20钢及其搪瓷涂层在400 ℃下的氧化和NaCl腐蚀行为研究

doi:10.11902/1005.4537.2022.373

中国腐蚀与防护学报

2023, Vol. 43

Issue (4): 890-895 CSTR: 32134.14.1005.4537.2022.373 DOI: 10.11902/1005.4537.2022.373

研究报告

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20钢及其搪瓷涂层在400 ℃下的氧化和NaCl腐蚀行为研究

袁磊¹, 谢新², 陈明辉¹(

), 李烽杰¹, 王福会¹

^1.东北大学沈阳材料科学国家研究中心联合研究分部沈阳 110819
^2.上海船舶工艺研究所 (中国船舶集团有限公司第十一研究所) 上海 200032

Air Oxidation and NaCl Corrosion Behavior of 20 Steel Without and with Enamel Coating at 400 °C

YUAN Lei¹, XIE Xin², CHEN Minghui¹(

), LI Fengjie¹, WANG Fuhui¹

^1.Shenyang National Key Laboratory for Materials Science, Northeastern University, Shenyang 110819, China
^2.Shipbuilding Technology Research Institute (The 11th Institute of China State Shipbuilding Corporation), Shanghai 200032, China

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摘要:

设计了一种用于20钢表面的搪瓷涂层，研究了基体与搪瓷涂层在400 ℃下恒温氧化1000 h和表面涂覆氯盐200 h的腐蚀行为。结果表明，搪瓷涂层呈非晶态，致密平整，与基体结合良好。在长时间的实验中未出现开裂或剥落行为，具有很高的热稳定性以及耐蚀性，为20钢基体提供了有效的防护。

关键词 ：搪瓷涂层, 20钢, 恒温氧化, 氯盐腐蚀

Abstract：

A novel enamel coating was prepared on 20 steel, then the oxidation and NaCl deposit induced corrosion of the steel without and with enamel coating were studied in air at 400 ℃ for 1000 and 200 h respectively. It is revealed that the prepared enamel coating is compact, amorphous, and can be well combined with the substrate. There are no cracks and spallation of enamel coatings was observed after corrosion tests. The enamel coating has high thermal stability and corrosion resistance, which provides effective protection for the 20 steel substrate.

Key words： enamel coating 20 steel oxidation chlorine salt corrosion

收稿日期: 2022-11-29 32134.14.1005.4537.2022.373

ZTFLH:

TG172

通讯作者: 陈明辉，E-mail: mhchen@mail.neu.edu.cn，研究方向为高温涂层、防腐自润滑

Corresponding author: CHEN Minghui, E-mail: mhchen@mail.neu.edu.cn

作者简介: 袁磊，男，1997年生，硕士生

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引用本文:

袁磊, 谢新, 陈明辉, 李烽杰, 王福会. 20钢及其搪瓷涂层在400 ℃下的氧化和NaCl腐蚀行为研究[J]. 中国腐蚀与防护学报, 2023, 43(4): 890-895.
YUAN Lei, XIE Xin, CHEN Minghui, LI Fengjie, WANG Fuhui. Air Oxidation and NaCl Corrosion Behavior of 20 Steel Without and with Enamel Coating at 400 °C. Journal of Chinese Society for Corrosion and protection, 2023, 43(4): 890-895.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2022.373 或 https://www.jcscp.org/CN/Y2023/V43/I4/890

图1 制备态搪瓷涂层的表面和截面形貌以及XRD谱

图2 不带及带有搪瓷涂层的20钢在400 ℃下的氧化动力学曲线

图3 20钢基体氧化不同时间后背散射扫描像

图4 400 ℃下氧化1000 h后搪瓷涂层微观表征

图5 不带及带有搪瓷涂层的20钢在400 oC下表面沉积NaCl时增重曲线

图6 20钢表面沉积NaCl时400 °C下腐蚀后的形貌

图7 带搪瓷涂层的20钢在表面沉积NaCl时腐蚀200 h后微观表征

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