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Codeposition of Co-Al-Y on nickel base superalloys by pack cementation process

  • Beihang University

Research output: Contribution to journalArticlepeer-review

Abstract

Based on the results of thermochemical analysis, NH4I+NH4Cl proved to be a more favorable activator for codepositing Co-Al-Y compared to NH4I or NH4Cl. Coating deposition experiments were also demonstrated that codeposition of Co-Al-Y with high concentration of Co and minute quantities of Y could be achieved at 1323K in the NH4I+NH4Cl activated packs. The coating exhibited the best cyclic oxidation resistance at 1323K when NH4I+NH4Cl were used as activator.

Original languageEnglish
Pages (from-to)454-460
Number of pages7
JournalCorrosion Science
Volume75
DOIs
StatePublished - Oct 2013

Keywords

  • A. Metal coatings
  • A. Superalloys
  • C. Oxidation

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