Effect of multi-interfacial structure on fracture resistance of composite TiSiN/Ag/TiSiN multilayer coating

Chaoqun Dang, Yirong Yao, Temitope Olugbade, Jinlong Li (Lead / Corresponding author), Liping Wang

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

A composite TiSiN/Ag/TiSiN multilayer coating was deposited on a Ti6Al4V substrate by multi-arc ion plating system. The coating had a special structure with a TiN buffer layer, TiSiN/Ag multilayers that possess alternating TiSiN (45 nm) and Ag (12 nm) layers, and TiSiN coating interlayers of 120 nm thickness for a total thickness of 1.7 μm. The TiSiN layers had a nanocrystalline/amorphous microstructure of nc-TiN, nc-Ag and amorphous Si3N4, with amorphous Si3N4 present around nanocrystal TiN and Ag boundaries, and Ag layers consisting of ductile nanocrystal silver. We have shown that this design of the composite TiSiN/Ag/TiSiN multilayer coating can effectively hinder crack propagation and increase fracture resistance of the coating.
Original languageEnglish
Pages (from-to)107-112
Number of pages6
JournalThin Solid Films
Volume653
Early online date10 Mar 2018
DOIs
Publication statusPublished - 1 May 2018

Keywords

  • TiSiN/Ag/TiSiN multilayer coating
  • Multi-interfacial structure
  • Multi-arc ion plating
  • Fracture resistance

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