TY - JOUR
T1 - Microstructural changes and their influence on corrosion post-annealing treatment of copper and AISI 5140 steel in 3.5 wt% NaCl medium
AU - Jomy, Jilna
AU - Sharma, Sathyashankara
AU - Prabhu, P. R.
AU - Hiremath, Pavan
AU - Prabhu, Deepa
N1 - Funding Information:
This work was supported by intramural funding from the Manipal Academy of Higher Education, Manipal The authors extend their acknowledgment to the Department of Chemistry, Department of Mechanical & Manufacturing Engineering, Central Instrumentation Facility, Manipal Institute of Technology (MIT), Manipal, and Manipal Academy of Higher Education (MAHE) for the characterization facilities. The first author extends her appreciation to MAHE, Manipal for providing the Dr. TMA Pai scholarship.
Publisher Copyright:
© 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2023
Y1 - 2023
N2 - Corrosion is one of the major issues faced by marine industries. Two of the major metals used in these industries include copper and AISI 5140 steel. This iterates the importance of understanding the microstructure and its influence on the corrosion behavior of these metals in 3.5 wt% NaCl that is studied here. Annealing treatment was performed for both the metals, and the microstructure before and after the annealing treatment was performed using an optical microscope and SEM. X-ray diffraction (XRD) of the metals before and after heat treatment was performed, and it was found that the annealing treatment caused an increase in the crystallite size irrespective of the metal. The samples were subjected to Vicker’s microhardness testing, and a decrease in the hardness was achieved post-annealing. The electrochemical studies further proved that there is an improvement in corrosion resistance post-annealing. The kinetic and thermodynamic parameters are described using Arrhenius and transition state theories.
AB - Corrosion is one of the major issues faced by marine industries. Two of the major metals used in these industries include copper and AISI 5140 steel. This iterates the importance of understanding the microstructure and its influence on the corrosion behavior of these metals in 3.5 wt% NaCl that is studied here. Annealing treatment was performed for both the metals, and the microstructure before and after the annealing treatment was performed using an optical microscope and SEM. X-ray diffraction (XRD) of the metals before and after heat treatment was performed, and it was found that the annealing treatment caused an increase in the crystallite size irrespective of the metal. The samples were subjected to Vicker’s microhardness testing, and a decrease in the hardness was achieved post-annealing. The electrochemical studies further proved that there is an improvement in corrosion resistance post-annealing. The kinetic and thermodynamic parameters are described using Arrhenius and transition state theories.
UR - https://www.scopus.com/pages/publications/85168273668
UR - https://www.scopus.com/inward/citedby.url?scp=85168273668&partnerID=8YFLogxK
U2 - 10.1080/23311916.2023.2244770
DO - 10.1080/23311916.2023.2244770
M3 - Article
AN - SCOPUS:85168273668
SN - 2331-1916
VL - 10
JO - Cogent Engineering
JF - Cogent Engineering
IS - 1
M1 - 2244770
ER -
