DRY AND HOT CORROSION BEHAVIOUR OF Al-Ni-Co-x MWCNT COMPOSITES PROCESSED THROUGH POWDER METALLURGY
M. Padmanaban,
Rama Thirumurugan and
T. Ramkumar
Additional contact information
M. Padmanaban: Department of Mechanical Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi 642003, Tamilnadu, India
Rama Thirumurugan: Department of Mechanical Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi 642003, Tamilnadu, India
T. Ramkumar: Department of Mechanical Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi 642003, Tamilnadu, India
Surface Review and Letters (SRL), 2025, vol. 32, issue 10, 1-9
Abstract:
The outcome of this research paper is to investigate the room and hot corrosion behavior of Al-10Ni-4Co-x multi-walled carbon nanotube (MWCNT) composites processed through Powder Metallurgy (P/M). The secondary particle MWCNT content was varied as 0.5, 1.0 and 1.5wt.%, respectively. The fabricated composites were characterized using a Scanning Electron Microscope (SEM). The corrosion behavior of the composites was analyzed using Tafel polarization. After polarization, the corroded surfaces were analyzed using SEM. The high temperature corrosion behavior was also investigated and found that the corrosion rate of 3.9025 mpy for 90Al-10Ni-4Co composite and 4.9025 mpy for 85Al-10Ni-4Co-1.0MWCNT composite. The results indicated that 84.5Al-10Ni-4Co-1.5MWCNT composite possessed better corrosion resistance than other composites. Various elements including Na, Cl, Al, Ni, Co, Mg, Si and O were observed. It reveals that Na+ and Cl− ions react well with Ti. Hot corrosion studies clearly demonstrated that after the 50 h test, the samples with MWCNT inclusion exhibited improved corrosion resistance. The 85Al-10Ni-4Co-1.0MWCNT composite showed a mass change of 0.01870mg which was 5% lower than 90Al-10Ni-4Co composite.
Keywords: Al-Ni-Co; multiwall carbon nanotubes; Tafel; hot corrosion (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:
Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X24501324
Access to full text is restricted to subscribers
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:32:y:2025:i:10:n:s0218625x24501324
Ordering information: This journal article can be ordered from
DOI: 10.1142/S0218625X24501324
Access Statistics for this article
Surface Review and Letters (SRL) is currently edited by S Y Tong
More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().