Consolidation mechanism, microstructural evolution and corrosion resistance of Inconel 625 coatings

Eyitayo Olatunde Olakanmi; Kinsman Malikongwa; Sipiwe Trinity Nyadongo; Shaik Hoosain; Sisa Lesley Pityana

doi:10.1080/02670844.2020.1783746

Consolidation mechanism, microstructural evolution and corrosion resistance of Inconel 625 coatings

Eyitayo Olatunde Olakanmi, Kinsman Malikongwa, Sipiwe Trinity Nyadongo, Shaik Hoosain, Sisa Lesley Pityana

Research output: Contribution to journal › Article › peer-review

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Abstract

The inter-relationships between geometrical properties, microstructural characteristics and corrosion resistance on one hand and laser-material interaction parameter (α) on the other hand are examined. A laser-material interaction parameter within the range of 599 ≤ α ≤ 400 J.s g⁻¹ mm⁻¹ imparted optimum characteristics of microstructure, microhardness and corrosion resistance. The consolidation mechanism of the coatings indicates that this parameter ensures the formation of a double ‘burn-in’ macrostructure into the substrate which imparts non-porous, crack-free and a fine interfacial microstructure. This study provides guidance in designing Inconel 625 coatings of desirable microstructures and corrosion resistance.

Original language	English
Pages (from-to)	1-14
Number of pages	14
Journal	Surface Engineering
DOIs	https://doi.org/10.1080/02670844.2020.1783746
Publication status	Published - 2020

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1080/02670844.2020.1783746

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title = "Consolidation mechanism, microstructural evolution and corrosion resistance of Inconel 625 coatings",

abstract = "The inter-relationships between geometrical properties, microstructural characteristics and corrosion resistance on one hand and laser-material interaction parameter (α) on the other hand are examined. A laser-material interaction parameter within the range of 599 ≤ α ≤ 400 J.s g−1 mm−1 imparted optimum characteristics of microstructure, microhardness and corrosion resistance. The consolidation mechanism of the coatings indicates that this parameter ensures the formation of a double {\textquoteleft}burn-in{\textquoteright} macrostructure into the substrate which imparts non-porous, crack-free and a fine interfacial microstructure. This study provides guidance in designing Inconel 625 coatings of desirable microstructures and corrosion resistance.",

author = "Olakanmi, {Eyitayo Olatunde} and Kinsman Malikongwa and Nyadongo, {Sipiwe Trinity} and Shaik Hoosain and Pityana, {Sisa Lesley}",

note = "Publisher Copyright: {\textcopyright} 2020, {\textcopyright} 2020 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.",

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AU - Olakanmi, Eyitayo Olatunde

AU - Malikongwa, Kinsman

AU - Nyadongo, Sipiwe Trinity

AU - Hoosain, Shaik

AU - Pityana, Sisa Lesley

PY - 2020

Y1 - 2020

N2 - The inter-relationships between geometrical properties, microstructural characteristics and corrosion resistance on one hand and laser-material interaction parameter (α) on the other hand are examined. A laser-material interaction parameter within the range of 599 ≤ α ≤ 400 J.s g−1 mm−1 imparted optimum characteristics of microstructure, microhardness and corrosion resistance. The consolidation mechanism of the coatings indicates that this parameter ensures the formation of a double ‘burn-in’ macrostructure into the substrate which imparts non-porous, crack-free and a fine interfacial microstructure. This study provides guidance in designing Inconel 625 coatings of desirable microstructures and corrosion resistance.

AB - The inter-relationships between geometrical properties, microstructural characteristics and corrosion resistance on one hand and laser-material interaction parameter (α) on the other hand are examined. A laser-material interaction parameter within the range of 599 ≤ α ≤ 400 J.s g−1 mm−1 imparted optimum characteristics of microstructure, microhardness and corrosion resistance. The consolidation mechanism of the coatings indicates that this parameter ensures the formation of a double ‘burn-in’ macrostructure into the substrate which imparts non-porous, crack-free and a fine interfacial microstructure. This study provides guidance in designing Inconel 625 coatings of desirable microstructures and corrosion resistance.

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JO - Surface Engineering

JF - Surface Engineering

ER -

Consolidation mechanism, microstructural evolution and corrosion resistance of Inconel 625 coatings

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