Corrosion Inhibitive Effects of Coconut Water for Al 7075 Alloy in Acidic Medium

Authors

  • R D Pruthviraj Department of Chemistry, Rajarajeswari College of Engineering, Mysore Raod, Bangalore, Karnataka 560074, India
  • K C Vishwanath Department of Mechanical Engineering,, Rajarajeswari College of Engineering, Mysore Raod, Bangalore, Karnataka 560074, India
  • A A Jahagirdar Department of Chemistry, Dr. Ambedkar Institute of Technology, Mallathalli, Bangalore, Karnataka 560056, India
  • M T Swamy Department of Chemistry, Sambhram Institute of Technology, Vidyaranyapura, Bangalore, Karnataka 560056, India
  • S D Ashok Department of Chemistry, R & D Centre for Nano Science and Nano Technology, Global Academy of Technolohy, RR Nagar, Bangalore, Karnataka 560098, India

DOI:

https://doi.org/10.48165/

Keywords:

Coconut water, inhibitive effect, Al 7075 alloy, H2SO4, corrosion rate

Abstract

The corrosion inhibitive effect of coconut water  as an eco-friendly inhibitor for the corrosion  control of Al 7075 alloy in 0.5 Molar solution of  H2SO4 acid have been investigated using the  weight loss method which is considered more  informative than other laboratory techniques.  The studies were carried out using 30-110ml of  the coconut water. The test coupons were totally  immersed in the corroding medium containing  various concentration of the inhibitor at the time  intervals of 24-192 hours. The results obtained  showed that the concentration of the inhibitor in  the corrodent impacted differently on the test  coupons. The corrosion rate was found to  decrease while the inhibitor efficiency increases  as the inhibitor concentration was increased. The  plateau of maximum inhibition efficiency of  89.07% and 81.57% was obtained at the  concentration of 90ml and 110ml for 24hours and  48hours immersion time respectively. The study  showed that coconut water possesses inhibiting  properties for reducing the corrosion of Al 7075  alloy in the acidic medium. 

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Published

2021-07-12

Issue

Vol. 40 No. 1 (2021): Bulletin of Pure and Applied Sciences Chemistry (Jan-Jun) 2021

Section

Articles

How to Cite

Corrosion Inhibitive Effects of Coconut Water for Al 7075 Alloy in Acidic Medium . (2021). Bulletin of Pure and Applied Sciences-Chemistry , 40(1), 7–15. https://doi.org/10.48165/