Laser beam processing for surface modifications

B. S. Yilbas*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

2 Scopus citations

Abstract

High power laser beam processing of metallic and nonmetallic surfaces offers considerable advantages over the conventional methods. The laser surface treatment involves local melting and evaporation, therefore, surface texture consisting of micro/nano poles can be generated under the control environment. Using the assisting gas during laser processing results in chemical reactions taking place at the treated surface, which in turn gives rise to chemical modification of the surface. Since laser surface treatment involves with texturing at high cooling rates and chemical modifications, the treated surface has superior characteristics in terms of hardness, wear resistance, and hydrophobicity. Consequently, in the present chapter some aspects of laser surface treatment process together with the characterization of the treated surface are presented. The morphological and metallurgical changes in the laser-treated layer are examined for various materials. Surface characteristics including friction coefficient, residual stress developed, and hydrophobicity are provided in detail. In addition, some case studies including surface treatment of phosphorous bronze, yttria-stabilized zirconia, and Rene 41 are presented in the light of the previous studies.

Original languageEnglish
Title of host publicationSurface and Heat Treatment Processes
PublisherElsevier Inc.
Pages137-153
Number of pages17
Volume2-3
ISBN (Electronic)9780128032503
ISBN (Print)9780128032497
DOIs
StatePublished - 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Inc. All rights reserved.

Keywords

  • Hydrophobicity
  • Laser treatment
  • Residual stress
  • Surface morphology

ASJC Scopus subject areas

  • General Engineering
  • General Materials Science

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