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The corrosion behavior of electroless Ni-P coating in C1~-/H_2S environment

机译:化学镀Ni-P涂层在C1〜-/ H_2S环境中的腐蚀行为

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摘要

At present, the Cl-/H_2S corrosion of refinery heat exchanger at low temperature has a great impact on safety production. Aimed at this problem, an amorphous state Ni-P coating was prepared by electroless plating method in this paper. The electrochemical behavior and corrosion resistance of Ni-P coating in C1-/H_2S environment were investigated by means of electrochemical equipment and autoclave, respectively. The scanning electron microscopy (SEM) and transmission electron microscope (TEM) analysis suggest that the Ni-P coating is amorphous state and little microporous appears on its surface. The electrochemical measurement and autoclave test results show that the corrosion resistance of Ni-P coating is superior to that of 316L stainless due to its amorphous state structure and low porosity. The corrosion rate of Ni-P coating in this C1-/H_2S environment is only 0.0011 mm/a.
机译:目前,炼厂换热器的低温Cl- / H_2S腐蚀对安全生产影响很大。针对这一问题,本文采用化学镀方法制备了非晶态的Ni-P涂层。采用电化学设备和高压釜分别研究了Ni-P涂层在C1- / H_2S环境下的电化学行为和耐蚀性。扫描电子显微镜(SEM)和透射电子显微镜(TEM)分析表明,Ni-P涂层为非晶态,表面几乎没有微孔。电化学测量和高压釜测试结果表明,由于Ni-P涂层的非晶态结构和低孔隙率,其耐蚀性优于316L不锈钢。在这种C1- / H_2S环境中,Ni-P涂层的腐蚀速率仅为0.0011 mm / a。

著录项

  • 来源
    《Applied Surface Science》 |2012年第22期|p.8802-8806|共5页
  • 作者单位

    Tubular Goods Research Institute of China National Petroleum Corporation, Xi'an, Shanxi 710065, China,Schools of Material Science and Technology, Xi'an Jiao Tong University, Xi'an, Shanxi 710065, China,Xi'An Jiao Tong University, School of Material Science and Engineering, Xianning Westroad 28, Xi'An, China;

    Tubular Goods Research Institute of China National Petroleum Corporation, Xi'an, Shanxi 710065, China;

    Tubular Goods Research Institute of China National Petroleum Corporation, Xi'an, Shanxi 710065, China;

    Tubular Goods Research Institute of China National Petroleum Corporation, Xi'an, Shanxi 710065, China;

    Tubular Goods Research Institute of China National Petroleum Corporation, Xi'an, Shanxi 710065, China;

    Schools of Material Science and Technology, Xi'an Jiao Tong University, Xi'an, Shanxi 710065, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electroless Ni-P coating; Cl~-/H_2S environment; electrochemical test; corrosion rate;

    机译:化学镀Ni-P涂层;Cl〜-/ H_2S环境;电化学测试腐蚀率;

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