Important Influential Factor for Corrosion of High-altitude Marine Engineering Equipment in Atmosphere-chloride Ion Deposition Rate

doi:10.11902/1005.4537.2019.206

Journal of Chinese Society for Corrosion and protection

2020, Vol. 40

Issue (5): 474-478 DOI: 10.11902/1005.4537.2019.206

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Important Influential Factor for Corrosion of High-altitude Marine Engineering Equipment in Atmosphere-chloride Ion Deposition Rate

DENG Peichang¹, ZHONG Jie¹, WANG Kun², HU Jiezhen²(

), LI Ziyun², CHEN Chuxin¹, SHEN Xiaohan¹

1 College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China
2 College of Mechanical and Power Engineering, Guangdong Ocean University, Zhanjiang 524088, China

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Abstract

The deposition rate of Cl^- is the important influence factor for the corrosion of high-altitude marine engineering equipment in marine atmosphere. For sampling the Cl^- deposition rate at different heights, a so called “kite hanging wet-candles”method was invented, while the Cl^-concentrations of the collected samples were analyzed by ion chromatography. The effect of environmental factors on the Cl^- deposition rate was analyzed by the Pearson correlation coefficient method. At the Hainan island of the South China Sea, the distribution of the Cl^- deposition rates exhibits a reverse “S”-shape in the range of 10 m to 100 m vertical scope in the summer time, however, the Cl^- deposition rates were gradually reduced in the period from June to August.

Key words: Cl^- kite hanging wet-candle method sedimentation rate Pearson correlation coefficient method

Received: 13 November 2019

ZTFLH:

TG174

Fund: National Natural Science Foundation of China(51801033);"Sail of the Sea-sailing Plan" Project of Guangdong University Students(qhjh2018zr15)

Corresponding Authors: HU Jiezhen E-mail: jiezhen0520@163.com

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Cite this article:

DENG Peichang, ZHONG Jie, WANG Kun, HU Jiezhen, LI Ziyun, CHEN Chuxin, SHEN Xiaohan. Important Influential Factor for Corrosion of High-altitude Marine Engineering Equipment in Atmosphere-chloride Ion Deposition Rate. Journal of Chinese Society for Corrosion and protection, 2020, 40(5): 474-478.

URL:

https://www.jcscp.org/EN/10.11902/1005.4537.2019.206 OR https://www.jcscp.org/EN/Y2020/V40/I5/474

Fig.1 Schematic diagram of the Cl^- sedimentation

Fig.2 Schematic diagram of wet-candle rate sampling device

Table 1 Different vertical heights chloride ion sedimentation rate in different month (mg·m^-2·d^-1)

Table 2 Environmental factors in different month

Fig.3 Relationships of chloride ion sedimentation rate with different vertical heights

Fig.4 High-altitude chloride ion sedimentation rate in summer: (a) June, (b) July, (c) August

Table 3 Environmental factors on the chloride ion sedimentation rate by Pearson correlation

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