Laser-induced deposition of alumina ceramic coating on stainless steel from dry thin films for surface modification

A new technique of depositing a hard ceramic coating onto stainless steel substrate by irradiating sol–gel dry alumina films using laser technology has been successfully achieved. The phase composition, crystalline structure and surface morphology of laser-deposited alumina coatings on the substrate...

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Bibliographic Details
Published in:Ceramics international 2014-05, Vol.40 (4), p.6151-6156
Main Authors: Adraider, Y., Pang, Y.X., Nabhani, F., Hodgson, S.N., Sharp, M.C., Al-Waidh, A.
Format: Article
Language:English
Subjects:
Alumina coatings
Dry thin alumina films
Laser deposition
Sol–gel
Stainless steel substrates
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Summary:A new technique of depositing a hard ceramic coating onto stainless steel substrate by irradiating sol–gel dry alumina films using laser technology has been successfully achieved. The phase composition, crystalline structure and surface morphology of laser-deposited alumina coatings on the substrate surface were characterised by ATR-FTIR, XRD, SEM and EDS, whilst the mechanical properties of the alumina-coated surface were measured using nano-indentation. The results show that laser irradiation of dry alumina films led to the deposition of crystalline alumina coating in α-Al2O3 form on substrate surface. Nano-indentation measurements reveal that the mechanical properties of the alumina-coated surface are significantly improved and reach the same level as pure α-alumina ceramic.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2013.11.067