Properties of Fe-Ni-Cr alloy coatings by using direct and pulse current electrodeposition

Adelkhani, H ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jallcom.2008.09.108
  3. Publisher: 2009
  4. Abstract:
  5. This paper describes the effects of using direct and pulse current on composition and corrosion resistance of Fe-Ni-Cr alloy coatings. In both direct and pulse current electrodeposition, increasing the current density has a decreasing effect on Fe and Ni and an increasing influence on Cr. In pulse current electrodeposition, duty cycle has a greater effect than frequency on composition of the alloy coating, particularly in the range of 10-50%. In this range, by increasing the duty cycle, Ni decreases, Fe sharply increase and Cr shows an increasing trend. Following a study of the microhardness of coatings, it is determined that the microhardness increases about 1.5 times by pulse current electrodeposition. The corrosion resistance of the alloy coatings (electrodeposited by direct and pulse current) has been investigated in NaCl solution. The micro-cracks of alloy coating can be decreased by using pulse current, which demonstrates a better corrosion resistance than direct current coating. © 2008 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Microhardness ; Alloy coatings ; Alloy electrodeposition ; Decreasing effects ; Direct currents ; Duty cycles ; Fe-Ni-Cr alloys ; Nacl solutions ; Pulse current ; Pulse current electrodepositions ; Alloys ; Chromium ; Chromium alloys ; Corrosion resistance ; Electrodeposition ; Iron alloys ; Metal cladding ; Nickel ; Nickel alloys ; Sodium chloride ; Chromate coatings
  8. Source: Journal of Alloys and Compounds ; Volume 476, Issue 1-2 , 2009 , Pages 234-237 ; 09258388 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S092583880801565X