The Effect of Reverse Pulse Plating and Lanthanum Addition in Plating Bath on Corrosion Resistance of Austenitic Steel in Chlorine Solution
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JMATPR-9-3_003
تاریخ نمایه سازی: 10 بهمن 1400
Abstract:
The ۳۱۶L nickel-chrome molybdenum austenitic stainless steel is commonly employed in various industries. This type of steel is particularly of interest in chemical industries, especially in harsh and corrosive environmental conditions. Although ۳۱۶L stainless steel has good mechanical and corrosive characteristics, it fails to perform well in chlorine-containing aqueous environments. To overcome this issue, a Ni-La-Cr-Fe layer is applied to the ۳۱۶L steel using the electroplating method. In addition, the reverse pulse plating method is used to control the ion deposition kinetics. The plating current application duration (on-time), the current disruption duration (off-time), and (TRev) are the control parameters of the duration and polarity of the pulse. Finally, the coated layer acquires an average thickness of ۶.۸۳ after applying on-time and off-time repeatedly and performing SEM and polarization tests in ۱.۵% solution at ۵۰ Celcius degrees. Furthermore, the desired surface morphology is achieved, and corrosion resistance is ۱۶۰ times higher than ۳۱۶ bare steel. Applying the reverse pulse plating method, adding beneficial compounds of saccharin and SDS, and using lanthanum chloride in the plating bath are the essential reasons to successfully add a coating layer on the ۳۱۶ bare steel.
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Authors
Leila Bakhtiari
Materials Science and Engineering Dept., Shahid Bahonar University, Jomhori-e-Eslami Blvd., Kerman, Iran
Abdolhamid Jafari
Materials Science and Engineering Dept., Shahid Bahonar University, Jomhori-e-Eslami Blvd., Kerman, Iran
Shahriyar Sharafi
Materials Science and Engineering Dept., Shahid Bahonar University, Jomhori-e-Eslami Blvd., Kerman, Iran
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