Correlation between growth texture, crystallite size, lattice strain and corrosion behavior of copper-carbon nanotube composite coatings

Aliyu, A and Srivastava, C (2020) Correlation between growth texture, crystallite size, lattice strain and corrosion behavior of copper-carbon nanotube composite coatings. In: Surface and Coatings Technology .

PDF sur_coa_tec_2020.pdf - Published Version Restricted to Registered users only Download (3MB) | Request a copy

Abstract

This study illustrates the correlation between corrosion properties, preferred growth orientation, crystallite size, size distribution, and lattice strain in electrodeposited Cu and Cu�carbon nanotubes (CNT) composite coatings with different CNT additions. Cu-CNT composite coatings were electrodeposited over mild steel substrate by dispersing different CNTs into the electrolyte bath. Lower CNT incorporation enhanced the coating compactness and produced finer coating morphology. In contrast, higher CNT amounts produced rougher and defective coating morphology primarily due to the agglomeration of CNTs. The crystallite size, size distribution, preferred growth orientation, and strain in the coatings were sensitive to the CNT amount. With increasing CNT addition, growth along (111) planes was preferred. With continued CNT addition, crystallite size, size distribution, and lattice strain initially decreased to the lowest value, and then it increased at higher CNT additions. A similar trend of initial decrease followed by increase was also observed for the coatings' corrosion rate with continued CNT addition. The optimum CNT amount produced the lowest corrosion rate also yielded maximum growth along the low energy (111) planes, smallest crystallite size, lowest size distribution and lowest lattice strain. © 2020

Item Type:	Journal Article
Publication:	Surface and Coatings Technology
Publisher:	Elsevier B.V.
Additional Information:	The copyright of this article belongs to Elsevier B.V.
Keywords:	Carbon nanotubes; Copper corrosion; Corrosion rate; Corrosive effects; Crystallite size; Electrodeposition; Electrodes; Electrolytes; Morphology; Size distribution; Textures, Coating morphology; Copper carbon nanotube composite; Corrosion behavior; Corrosion property; Defective coatings; Electrolyte bath; Mild steel substrates; Preferred growth, Composite coatings
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	04 Jan 2021 09:13
Last Modified:	04 Jan 2021 09:13
URI:	http://eprints.iisc.ac.in/id/eprint/67450

Actions (login required)

View Item