Microstructural characterization of Ru-doped NiCoCrAlYTa coupons treated by thermal oxidation

F. Juárez L, C. Vahlas, J. A. Alvarez C

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Isothermal oxidation of sintered Ru-doped and undoped Ni-alloy coupons in the range of 1173-1423 K was investigated. To assess the effect of Ruthenium doping, microstructural characterization was performed to compare the samples before and after oxidation treatment at 1173 K. Furthermore, cyclic oxidation tests on the Ru-doped and undoped coupons were carried out in a thermogravimetry apparatus at 1223 and 1323 K. The addition of 0.8 wt.% of Ru in NiCoCrAlYTa powders sintered coupons does not degrade the material's resistance to oxidation conditions.

Original languageEnglish
Pages (from-to)2192-2196
Number of pages5
JournalCorrosion Science
Volume51
Issue number9
DOIs
StatePublished - Sep 2009

Keywords

  • A. Superalloys
  • B. Thermal cycling, SEM
  • C. Oxidation

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