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Structures and properties of laser-assisted cold-sprayed aluminum coatings

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publicationTHERMEC 2016
PublisherTrans Tech Publications Ltd
Pages984-989
Number of pages6
Volume879
ISBN (Print)978-3-03-571129-5
DOIs
Publication statusPublished - 2017
Publication typeA4 Article in a conference publication
EventConference on Processing and Manufacturing of Advanced Materials, THERMEC -
Duration: 1 Jan 2000 → …

Publication series

NameMaterials Science Forum
Volume879
ISSN (Print)0255-5476

Conference

ConferenceConference on Processing and Manufacturing of Advanced Materials, THERMEC
Period1/01/00 → …

Abstract

In the cold spray process, solid particles impact on a surface with high kinetic energy, deform plastically and form a coating. This enables the formation of pure and dense coating structures. Even more, coating performance and deposition efficiency can be improved by assisting the process with a laser. Laser-assisted cold spraying (LACS) has shown its potential to improve coating properties compared with traditional cold spraying. In this study, coating quality improvement was obtained by using a co-axial laser spray (COLA) process which offers a new, cost-effective laser-assisted cold spray technique, for high-quality deposition and repair. In the COLA process, the sprayed surface is laser heated while particles hit the surface. This assists thebetter bonding between particles and substrate and leads to the formation of tight coating structures. This study focuses on the evaluation of the microstructural characteristics and mechanical properties (e.g., hardness and bond strength) of LACS metallic coatings.

Keywords

  • Aluminum coatings, Coating properties, Laser-assisted cold spraying, Microstructure

Publication forum classification

Field of science, Statistics Finland