Laser fabrication nanocrystalline coatings using simultaneous powders/wire feed

Jianing Li, Tongguang Zhai, Yuanbin Zhang, Feihu Shan, Peng Liu, Guocheng Ren

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Laser melting deposition (LMD) fabrication is used to investigate feasibilty of simultaneously feeding TC17 wire and the Stellite 20-Si3N4-TiC-Sb mixed powders in order to increase the utilization ratio of materials and also quality of LMD composite coatings on the TA1 substrate. SEM images indicated that such LMD coating with metallurgical joint to substrate was formed free of the obvious defects. Lots of the ultrafine nanocrystals (UNs) were produced, which distributed uniformly in some coating matrix location, retarding growth of the ceramics in a certain extent; UNs were intertwined with amorphous, leading the yarn-shape materials to be produced. Compared with substrate, an improvement of wear resistance was achieved for such LMD coating.

Original languageEnglish
Pages (from-to)44-48
Number of pages5
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume81
DOIs
StatePublished - Jul 1 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.

Keywords

  • Lasers
  • Metal-matrix composites (MMCs)
  • Nanocrystalline materials
  • Surface properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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