换热器Ni-P化学镀工艺与耐腐蚀可靠性评析
Corrosion Resistance Reliability of Ni-P Electroless Coating on Heat Exchanger
摘 要
Ni-P化学镀层在石化换热器得到较多的工业应用,其效果有好有坏.本文从换热器管程与壳程的施镀工艺入手,分析了Ni-P化学镀层质量与耐蚀性的关系,包括镀层厚度、针孔、粗糙度、磷含量、结合力、均匀度等,并为提高换热器Ni-P化学镀层耐蚀性提出了对策.
化学镀
换热器
耐蚀性
施镀工艺
Ni-P alloy
electroless coating
heat exchanger
corrosion resistance
coating processing technology
Abstract
There are many engineering applications of Ni-P electroless coatings on heat exchangers in petrochemical industry,their anticorrosion properties are different.Based on the coating processing technology in heat exchanger tube side and shell side,the relationship of coating quality and corrosion resistance is analyzed,including coating thickness,porosity,ronghness,phosphorus content,combining force and homogeneity etc.The protective measures are presented to promote the corrosion resistance of Ni-P coatings on heat exchangers.
中图分类号 TG174.44 TQ153.2
所属栏目 专论
基金项目
收稿日期 2009/2/16
修改稿日期 2009/5/7
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备注余存烨,高工.
引用该论文: YU Cun-ye. Corrosion Resistance Reliability of Ni-P Electroless Coating on Heat Exchanger[J]. Corrosion & Protection, 2009, 30(11): 809～812
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参考文献
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【2】余存烨.Ni-P镀层换热器失效探讨[J].石油化工腐蚀与防护,2001,18(6):42-45.
【3】闫洪.现代化学镀镍和复合镀技术[M].北京:国防工业出版社,1999.
【4】Robert P Tract,Gary J Shawhan.Practical guide to use Ni-P electroless nickel coatings[J].Materials Performance,1990(7):65-70.
【5】Ronald N Duncan.Perfomance of electroless nickel coated steel in oil field environments[J].Materials Performance,1983(1):28-34.
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