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Micromechanical Properties of AlN, TiN and AlN/TiN Nanostructured Multilayer Coatings

  • F. Muktepavela*
  • , I. Manika
  • , L. Grigorjeva
  • , V. Skvortsova
  • *Corresponding author for this work
  • University of Latvia

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

Coatings of AlN, TiN and nanostructured multilayer AlN/TiN have been deposited by reactive sputtering on sapphire, tungsten carbide (WC) and stainless steel substrates. The microhardness, adhesion and formation of cracks under indentation tests, were investigated. It was found that the adhesion of coatings on steel was higher, than on WC for all investigated samples. Nanostructured multilayer AlN/TiN films have the best adhesion and fracture toughness both on the hard (WC) and on the soft (stainless steel) substrates if compared with that for AlN and TiN "single layer" coatings. The effect of γ-radiation on mechanical properties of transparent AlN films was investigated. After the exposure of γ-radiation (106 Gy) the microhardness of AlN has increased by 33%. No debonding or destruction of AlN films under irradiation was observed.

Original languageEnglish
Pages (from-to)434-439
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5122
DOIs
Publication statusPublished - 2002
EventPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Advanced Organic and Inorganic Optical Materials - Riga, Latvia
Duration: 19 Aug 2002 → 22 Aug 2002

Keywords

  • Al/TiN multilayer coatings
  • AlN
  • Microhardness
  • TiN

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