垃圾焚烧电站水冷壁镍基合金涂层高温氯腐蚀性能研究

doi:10.11902/1005.4537.2021.279

中国腐蚀与防护学报

2022, Vol. 42

Issue (5): 879-884 DOI: 10.11902/1005.4537.2021.279

海洋材料腐蚀与防护专栏

本期目录 | 过刊浏览

垃圾焚烧电站水冷壁镍基合金涂层高温氯腐蚀性能研究

王永田¹, 赵祎璠¹, 魏啸天¹, 王嘉伟¹, 陈诚¹, 王宇¹, 张贝贝¹, 田欣利², 曲作鹏¹(

)

^1.华北电力大学电站能量传递转化与系统教育部重点实验室北京 102206
^2.陆军装甲兵学院装备再制造技术国防科技重点试验室北京 100072

High Temperature Chlorine Corrosion of Nickel Based Alloy Coating for Piping of Waste Incineration Power Plant

WANG Yongtian¹, ZHAO Yifan¹, WEI Xiaotian¹, WANG Jiawei¹, CHEN Cheng¹, WANG Yu¹, ZHANG Beibei¹, TIAN Xinli², QU Zuopeng¹(

)

^1.Key Laboratory of Power Station Energy Transfer and Transformation System Equipment of Ministry of Education, North China Electric Power University, Beijing 102206, China
^2.Key Laboratory of National Defense Technology for Equipment Remanu-facturing Technology, Army Academy of Armored Forces, Beijing 100072, China

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摘要:

垃圾焚烧电站水冷壁高温腐蚀是影响垃圾焚烧炉稳定运行的重要因素,为了提高垃圾焚烧炉运行的安全性,研究者大多从基材的选择、施加表面防护涂层、温度控制等方面进行了研究。本文则主要针对施加表面涂层方面,研究了锅炉水冷壁镍基涂层高温氯腐蚀性能,利用SEM、EDS、XRD和光学显微镜等对合金涂层进行表面形貌和组织结构分析,并沿涂层深度方向进行维氏硬度测试和组织成分检测,探究其抗氯腐蚀机理。结果表明,镍基涂层在高温下耐腐蚀能力强,组织致密,没有孔隙、裂纹等较大缺陷,能够较好地耐氯盐腐蚀,保护垃圾焚烧炉水冷壁。

关键词 ：火焰喷涂, 感应重熔, 氯腐蚀, 镍基合金涂层

Abstract：

The high temperature corrosion of water-cooled wall of the municipal solid waste incineration power plant is an important factor affecting the stable operation of the incinerator. In order to improve the safe operation of the waste incinerator, the existing improvement measures mostly involve the steel pipe selection, surface coating, temperature control and so on. In this paper, aiming at the application of surface coating, the high temperature chlorine corrosion performance of the nickel-based coating on boiler pipe was studied. The surface morphology, microstructure and composition of the alloy coating were characterized by means of optical microscope, vicker's hardness tester, SEM, EDS and XRD. The results show that the nickel-based coating has strong corrosion resistance at high temperature, there are no pores, cracks and other major defects in the coating. The coating can better resist the chloride corrosion and protect the pipeline steels of waste incinerator.

Key words： flame spraying induction remelting chlorine corrosion nickel-based alloy coating

收稿日期: 2021-10-11

ZTFLH:

TG174

基金资助:国家重点研发计划(2019YFC1907000);深圳市基础研究机构 (深圳市清洁能源研究院)专项经费(CERI-KY-2019-002);深圳市能源环保有限公司委托研发项目(0309-HBZB-服务-2019-2246)(2020JG003);中央高校基本科研业务费;深圳市能源环保有限公司委托研发项目(0309-HBZB-服务-2019-2246)(2020JG003)

通讯作者: 曲作鹏 E-mail: z.qu@ncepu.edu.cn

Corresponding author: QU Zuopeng E-mail: z.qu@ncepu.edu.cn

作者简介: 王永田,男,1980年生,博士,副教授

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引用本文:

王永田, 赵祎璠, 魏啸天, 王嘉伟, 陈诚, 王宇, 张贝贝, 田欣利, 曲作鹏. 垃圾焚烧电站水冷壁镍基合金涂层高温氯腐蚀性能研究[J]. 中国腐蚀与防护学报, 2022, 42(5): 879-884.
Yongtian WANG, Yifan ZHAO, Xiaotian WEI, Jiawei WANG, Cheng CHEN, Yu WANG, Beibei ZHANG, Xinli TIAN, Zuopeng QU. High Temperature Chlorine Corrosion of Nickel Based Alloy Coating for Piping of Waste Incineration Power Plant. Journal of Chinese Society for Corrosion and protection, 2022, 42(5): 879-884.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2021.279 或 https://www.jcscp.org/CN/Y2022/V42/I5/879

图1 4种不同实验条件试块的宏观形貌

图2 4种不同实验条件试块的截面显微形貌

图3 不同实验条件腐蚀后涂层表面SEM形貌

图4 试块经过600 ℃/400 h腐蚀后白色区域内的元素分布图

图5 4种不同实验条件涂层的XRD图谱

图6 试块由涂层到基体的显微硬度 (由涂层表面到基体内部)

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