Hydrothermal corrosion of TiN, TiAlN and CrN films on SUS-304 in 100 MPA water

Sergiy Korablov, Masahiro Yoshimura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Hydrothermal corrosion of TiN, TiAlN and CrN PVD films (3 μm thick) deposited on SUS-304 substrate was studied in 100MPa water in 20-950°C temperature range up to 750h. The beginning temperature of their reaction was determined as 200°C for TiN and TiAlN and 500°C for CrN films, which are quite low in comparison with that of air oxidation of those powders. Very thin oxide scales of TinO2n-1 homologous series phases were formed above 300°C. TiO2anatase is observed for TiN and TiAlN films at 400°C. The feature of hydrothermal corrosion of CrN films seems to be CrNxOy phase formation. Distinguishable weight changes were observed at higher temperature than 700°C for TiN, 750°C for TiAlN and 800°C for CrN respectively. Hydrothermal corrosion kinetics was constructed to calculate the activation energy of hydrothermal corrosions. On the base of obtained data, hydrothermal corrosion resistance was as follows: TiN → TiAlN → CrN. Facetted oxide crystals were formed at higher temperature than 500°C for TiN, TiAlN and 850°C for CrN.

Original languageEnglish
Title of host publicationProceedings of the Second International Conference on Processing Materials for Properties
EditorsB. Mishra, C, Yamauchi, B. Mishra, C. Yamauchi
Pages945-948
Number of pages4
Publication statusPublished - 2000 Dec 1
EventProceedings of the Second International Conference on Processing Materials for Properties - San Francisco, CA, United States
Duration: 2000 Nov 52000 Nov 8

Publication series

NameProceedings of the Second International Conference on Processing Materials for Properties

Conference

ConferenceProceedings of the Second International Conference on Processing Materials for Properties
CountryUnited States
CitySan Francisco, CA
Period00-11-0500-11-08

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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