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Densification behavior and microstructure evolution of laser surface melting processed silicon-containing micro arc oxidation coating

  • Harbin Institute of Technology

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

Abstract

The present work investigated the effect of laser surface melting (LSM) process on micro arc oxidation (MAO) coating prepared in silicate electrolytes (Si-MAO) and aluminate electrolytes (Al-MAO). Plasma intensity of laser spots, element content and phase constituents of coatings were analyzed. During LSM remelting process, the formation of heat sources and micro molten pools on the surface of MAO coating were discussed. The results showed that the moderate plasma was formed more easily on the Si-MAO than Al-MAO coating, owing to the temperature threshold of melting oxide layer was decreased for silicon-containing MAO coating during LSM treatment. Besides, the Si-MAO coating of laser-treated had low porosity and smooth surface.

Original languageEnglish
Title of host publicationMaterials and Processes Technologies V
PublisherTrans Tech Publications Ltd
Pages1650-1653
Number of pages4
ISBN (Print)9783038351214
DOIs
StatePublished - 2014

Publication series

NameAdvanced Materials Research
Volume941-944
ISSN (Print)1022-6680
ISSN (Electronic)1662-8985

Keywords

  • Laser surface melting
  • Micro arc oxidation
  • Microstructure
  • Surface

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