输电塔既有涂层与新涂层受风沙侵蚀的损伤机理

doi:10.11896/cldb.17100239

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Abstract The wind-blown sand erosion and wear tests on the new galvanized coating and existing galvanized coating of transmission tower bar were carried out in this study, and comparative analysis on the erosive damage law of the two types of galvanized coating was conducted as well. Scanning electron microscope and laser scanning confocal microscope were adopted to observe the micro-structures of erosive wear on these two kind of coatings, and analyze their mechanisms of sand erosion and damage. Research results indicated that higher erosion velocity contributed to enlarge the erosion rate of the coatings. Under the same erosion condition, the erosion rate of the existing galvanized coating was 500×10^-5 mg/g to 2 750×10^-5 mg/g higher than that of the new galvanized coating. When α was 35—37°, both of the coatings exhibited the highest rate of erosion, which were 2.5×10^-5 mg/g (new coating) and 0.014 mg/g (existing coating), respectively. When α=90°, both of the coatings presented the lowest rate of erosion, which were 0.5×10^-5 mg/g (new coating) and 700×10^-5 mg/g (existing coating), respectively. Erosion morphology of these two coatings developed from the low-angle erosion gullies to the coexistence of erosion gullies and erosion pits, and finally only scour pits remained at the high angle. There were primarily the same erosion and wear process of wind-drift sand on the new galvanized coating and existing galvanizes coating of transmission tower, while existing galvanized coating showed deeper and longer erosion pits and zonal erosion gullies , as well as rougher surface than new galvanized coating.

Key words： coating of transmission tower bar sand drift environment erosion damage mechanism

Published: 28 April 2019

CLC number:

TG174.44

Fund:This work was financially supported by the National Natural Science Foundation of China (11862022,11162011, 51468049, 11662012), State Grid Corporation Science and Technology Project (GCB51201602754).

About author:: Yunhong Hao, professor, doctor, doctoral tutor, College of Civil Engineering, Inner Mongolia University of Technology. He is currently the academic leader of the first-level discipline of civil engineering in Inner Mongolia University of Technology, and the academic leader of the second-level discipline of disaster prevention and mitigation engineering and protection engineering.; Jie Li, College of Civil Engineering, Inner Mongolia University of Technology, is a postgraduate student. Mainly engaged in the study of durability damage of engineering structures and materials under special regional environment.

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Cite this article:

HAO Yunhong,LI Jie,LIU Yongli. Damage Mechanism of Existing Coating and New Coating of Transmission Towers Eroded by Wind-blown Sand[J]. Materials Reports, 2019, 33(8): 1389-1394.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.17100239 OR http://www.mater-rep.com/EN/Y2019/V33/I8/1389

1 Huang Ning, Zheng Xiaojing.Mechanics in Engineering,2007,29(4),10(in Chinese).
黄宁,郑晓静.力学与实践,2007,29(4),10.
2 Gao Tao, Xu Yongfu, Yu Xiao.Journal of Arid Land Resources and Environment,2004(Z1),220(in Chinese).
高涛,徐永福,于晓.干旱区资源与环境,2004(Z1),220.
3 Wang Shigong, Dong Guangrong, Chen Huizhong, et al. Journal of De-sert Research,2000,20(4),349.(in Chinese).
王式功,董光荣,陈惠忠,等.中国沙漠,2000,20(4),349.
4 Naveed M, Renteria A F, Nebel D, et al.Wear, 2015, 342-343,391.
5 Hao Yunhong, Xing Yongming, Zhao Yanru, et al. Journal of Building Meterials,2011,14(3),345(in Chinese).
郝贠洪,邢永明,赵燕茹, 等.建筑材料学报,2011, 14(3),345.
6 Deng Wen, Zhao Xiaoqin, Li Shuangjian, et al. China Surface Enginee-ring,2017,9(3),1(in Chinese).
邓雯,赵小琴,李双健,等.中国表面工程,2017,9(3),1.
7 Hao Yunhong, Liu Yongli, Xing Yongming, et al.China Surface Engineering,2017,30(1),56(in Chinese).
郝贠洪,刘永利,邢永明,等.中国表面工程,2017,30(1),56.
8 Wen Shizhu.Tribology,2008,28(1),1( in Chinese).
温诗铸.摩擦学学报,2008,28(1),1.
9 Dong Gang, Wan Jin, Jiu Yuan, et al. Journal of Materials Science＆ Engineering,2004,2(6),909(in Chinese).
董刚,万金,九渊,等.材料科学与工程学报,2004,2(6),909 .
10 Dai Tinghai, Liu Bing, Zhang Dongqin, et al. Foundry Technology,2010,1(8),1017(in Chinese).
代廷海,刘炳,张东芹,等.铸造技术,2010,1(8),1017.
11 Hao Yunhong, Ren Ying, Duan Guolong, et al. Tribology,2014,7(4),357(in Chinese).
郝贠洪,任莹,段国龙,等.摩擦学学报,2014,7(4),357.
12 Hao Yunhong, Ya Ruhan, Li Hui, et al. Materials Review B:Research Papers,2018,32(4),1380(in Chinese).
郝贠洪,雅茹罕,李慧,等.材料导报:研究篇,2018,32(4),1380.
13 Dong Gang, Zhang Jiuyuan. Journal of Materials Science and Enginee-ring,2003,21(2),307(in Chinese).
董刚,张九渊.材料科学与工程学报, 2003,21(2),307.
14 Gránásy L. China Surface Engineering, 2004, 3(9), 645.
15 Xu Weisheng, He Guangyu, Cai Zhenbing, et al. China Surface Engineering,2017,23(4),1(in Chinese).
徐伟胜,何光宇,蔡振兵,等.中国表面工程,2017,9(3),1.