土壤腐蚀加速试验的加速比与动力学相关性研究

中国腐蚀与防护学报

2011, Vol. 31

Issue (3): 208-213

研究报告

本期目录 | 过刊浏览

土壤腐蚀加速试验的加速比与动力学相关性研究

聂向晖^1,2, 李晓刚³,李云龙^1,2,李记科^1,2, 张鸿博^1,2

1. 中国石油集团石油管工程技术研究院西安 710065
2. 北京隆盛泰科石油管科技有限公司北京 100101
3. 北京科技大学腐蚀与防护中心北京 100083

ACCELERATION RATIOS AND DYNAMIC CORRELATION EXPERIMENTS ON THE CORROSION LOSS OF Q235 STEEL IN SEASHORE SOIL

NIE Xianghui^1,2, LI Xiaogang³, LI Yunlong^1,2, LI Jike^1,2, ZHANG Hongbo^1,2

1. Tubular Goods Research Institute, China National Petroleum Corporation, Xi'an 710065
2. Beijing Longshine Oil Tubular Technology Co.Ltd., Beijing 100101
3. Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083

全文: PDF(434 KB)

摘要: 对Q235碳钢在滨海盐土中的土壤腐蚀进行恒温恒含水量、温度交变和含水量交变三种土壤腐蚀加速试验。根据腐蚀加速试验及现场埋样试验的腐蚀失重结果，对不同加速条件下的加速比和动力学相关性进行分析与计算。结果表明：腐蚀加速试验的加速比随温度升高而增大；相同温度下， 10%含水时的加速比最大，10%~30%含水时的加速比次之， 20%和30%含水条件下的加速较小；相同温度下，低含水量腐蚀加速试验的动力学关联度较低，而中、高含水及交变含水时的动力学关联度较高；50℃时的关联度平均值高于70℃，在70℃、20%含水时可获得相对较大的加速比与动力学关联度。

关键词 ：土壤腐蚀, 加速试验, 温度, 含水量, 加速比, 相关性

Abstract：Accelerative corrosion experiments were conducted on Q235 carbon steel in seashore salt soil in order to determine acceleration ratios and dynamic correlation coefficients. The experimentation utilized constant temperature and water content, various temperatures, and different water contents to calculate mass loss of steel samples in the lab; also, samples were put in the ground one meter deep, so as to perform addition analysis in the field. The results indicated that the acceleration ratio increased when the temperature increased; in addition, at the same temperature, the acceleration ratio was largest when the water content was 10%, then progressively lessened for the 10 %~30 % water content; for the 20 % and 30 % moisture levels, the values flattened and reached a minimum. For a constant temperature, the dynamic correlation was lower for low water content accelerative experiments, and higher for moderate and high water contents. At 50℃, the correlation coefficients were higher than those at 70℃. For these experiments, 70℃ and 20 % water content, achieved optimal results of the acceleration ratio and correlation coefficients.

Key words： soil corrosion accelerative experiment temperature water content acceleration ratio correlation

收稿日期: 2010-03-23

ZTFLH:

TG172.4

通讯作者: 聂向晖 E-mail: niexh3597@sina.com

Corresponding author: NIE Xianghui E-mail: niexh3597@sina.com

作者简介: 聂向晖，男，1972年生，博士，研究方向为金属材料腐蚀和无损检测

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引用本文:

聂向晖, 李晓刚,李云龙,李记科, 张鸿博. 土壤腐蚀加速试验的加速比与动力学相关性研究[J]. 中国腐蚀与防护学报, 2011, 31(3): 208-213.
ZHE Xiang-Hui. ACCELERATION RATIOS AND DYNAMIC CORRELATION EXPERIMENTS ON THE CORROSION LOSS OF Q235 STEEL IN SEASHORE SOIL. J Chin Soc Corr Pro, 2011, 31(3): 208-213.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2011/V31/I3/208

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