Addition of Mo in the Zn based alloy coating in the citrate solution and investigation of its corrosion behavior

سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 200

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شناسه ملی سند علمی:

JR_JMATPR-7-1_001

تاریخ نمایه سازی: 9 مرداد 1400

چکیده مقاله:

In this work, Zn-Co-Mo coatings were electrodeposited on mild steel substrate from a citrate solution at current densities of ۵, ۷.۵ and ۱۰ mA.cm-۲ and pH values of ۴.۵, ۵, and ۵.۵. The coated samples were studied by scanning electron microscope and potentiodynamic polarization. The corrosion behavior of the coatings was related to the molybdenum content and formation of local anodes and cathodes. According to the results, a distinct range of current and pH was recognized to provide high quality and corrosion resistant coatings. The percentage of molybdenum as an alloying element plays an important role in the improvement of the corrosion properties of the coating. The formed coating at pH of ۵.۵ with ۱۳ wt. % Mo showed the lowest corrosion current density with a value of ۰.۵ µA.cm-۲.The molybdenum coating also showed a passive-like behavior in the anodic region due to the presence of molybdenum in the coating composition.

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نویسندگان

Mahdi Omidi

Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

Mahdi Yeganeh

Department of Materials Science and Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.

Arash Etemad

Master of Science Student, Nanomaterial Engineering, Isfahan University, Isfahan, Iran

Mohammad Reza Rostami

Master of Science Student, Nano Materials Engineering, University of Science and Technology, Tehran, Iran

Mohammad esmaeil Shafie

Bachelor of Science, Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran