TY - GEN
T1 - Hydrothermal corrosion of TiN, TiAlN and CrN films on SUS-304 in 100 MPA water
AU - Korablov, Sergiy
AU - Yoshimura, Masahiro
PY - 2000
Y1 - 2000
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:0034592652
SN - 087339495X
T3 - Proceedings of the Second International Conference on Processing Materials for Properties
SP - 945
EP - 948
BT - Proceedings of the Second International Conference on Processing Materials for Properties
A2 - Mishra, B.
A2 - Yamauchi, C,
A2 - Mishra, B.
A2 - Yamauchi, C.
T2 - Proceedings of the Second International Conference on Processing Materials for Properties
Y2 - 5 November 2000 through 8 November 2000
ER -