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 journalArticle

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 languageEnglish
Pages (from-to)1-14
Number of pages14
JournalSurface Engineering
DOIs
Publication statusPublished - 2020

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Consolidation mechanism, microstructural evolution and corrosion resistance of Inconel 625 coatings'. Together they form a unique fingerprint.

  • Cite this