Effect of a sputtered TiAlCr coating on hot corrosion resistance of gamma-TiAl

Authors
Tang, ZL Wang, FH Wu, WT
Citation
Zl. Tang et al., Effect of a sputtered TiAlCr coating on hot corrosion resistance of gamma-TiAl, INTERMETALL, 7(11), 1999, pp. 1271-1274
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
INTERMETALLICS
ISSN journal
09669795 → ACNP
Volume
7
Issue
11
Year of publication
1999
Pages
1271 - 1274
Database
ISI
SICI code
0966-9795(199911)7:11<1271:EOASTC>2.0.ZU;2-D
Abstract
The effect of a sputtered Ti-50Al-10Cr coating on hot corrosion Behaviour o f gamma-TiAl was investigated in (Na,K)(2)SO4 and Na2SO4 + NaCl melts. The TiAlCr coating was effective in improving the hot corrosion resistance of T iAl in (Na,K)(2)SO4 melts due to the formation of a continuous Al2O3 scale. In Na2SO4 + NaCl melts, however, the TiAlCr coating had little effect on t he hot corrosion resistance of TiAl because it suffered from severe corrosi on due to the formation of an Al2O3 + TiO2 mixed scale which spalled easily . (C) 1999 Elsevier Science Ltd. All rights reserved.