Corrosion behavior and mechanism of Ni-Sn-P alloy coatings in artificial sea water

WANG Hongzhi; WU Qiang; ZHANG Zhixian; YAO Suwei; ZHANG Weiguo

doi:10.3969/j.issn.0438-1157.2013.04.032

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Corrosion behavior and mechanism of Ni-Sn-P alloy coatings in artificial sea water

更新时间：2025-12-10

- Corrosion behavior and mechanism of Ni-Sn-P alloy coatings in artificial sea water
- CIESC Journal Issue 4, Pages: 1359-1363(2013)
- 作者机构：
  
  天津大学化工学院,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.04.032
  CLC： 646.6
- Online First：05 April 2013，
  
  Published：05 April 2013
- 稿件说明：
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WANG Hongzhi, WU Qiang, ZHANG Zhixian, et al. Corrosion behavior and mechanism of Ni-Sn-P alloy coatings in artificial sea water[J]. CIESC Journal, 2013, (4): 1359-1363.
DOI：

WANG Hongzhi, WU Qiang, ZHANG Zhixian, et al. Corrosion behavior and mechanism of Ni-Sn-P alloy coatings in artificial sea water[J]. CIESC Journal, 2013, (4): 1359-1363. DOI： 10.3969/j.issn.0438-1157.2013.04.032.

摘要

利用扫描电子显微镜(SEM)和能谱(EDS)测试了电镀Ni-Sn-P合金镀层在人工海水中腐蚀前后表面形貌和合金成分的变化

结合X射线光电子能谱(XPS)对腐蚀后合金表面的组成进行了分析

并在此基础上探讨了Ni-Sn-P合金镀层在人工海水中的腐蚀机理。研究结果表明:电镀Ni-Sn-P合金在人工海水中耐蚀性优于Ni-P合金

由于人工海水中的氯离子的穿透效应而出现的局部腐蚀孔数较Ni-P合金大幅减少

腐蚀后Ni-Sn-P合金表面形成由SnO2、SnCl4、Ni3(PO4)2、NiO和Ni(OH)2组成的膜层

对合金耐蚀性的提高起到重要作用。

Abstract

The changes of microscopic morphology and elemental composition of Ni-Sn-P alloy coatings before and after corrosion in artificial sea water were studied with scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS)

and the corrosion products were examined with X-ray photoelectron spectroscopy (XPS).The corrosion mechanism of Ni-Sn-P alloy coatings in artificial sea water is discussed.EIS spectra and SEM showed that the corrosion resistance of electroplating Ni-Sn-P alloy in artificial seawater was better than Ni-P alloy

and the number of localized corrosion hole caused by penetration effect of Cl- was greatly reduced.After corrosion a layer of passive film composed of SnO2

SnCl4

Ni3(PO4)2

NiO and Ni(OH)2 was formed on the surface of Ni-Sn-P alloy

which played an important role in improving Ni-Sn-P alloy coatings corrosion resistance.

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