Formation of amorphous oxide in Al82Ni13Zr5 and Al88Ni7Ca5 alloys

Kang Cheol Kim, Ka Ram Lim, Sung Hyun Park, Min Young Na, Won Tae Kim, Do Hyang Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Formation and thermal stability of amorphous oxide in Al82Ni13Zr5 and Al88Ni7Ca5 alloys during holding at 873K have been investigated. The thickness of amorphous oxide layer upon heating up to 873K is ~8nm in Al82Ni13Zr5, while ~15nm in Al88Ni7Ca5. After exposure for 15h, the amorphous oxide still remains in Al88Ni7Ca5, indicating that the thermal stability of the amorphous oxide in Al88Ni7Ca5 is higher than that in Al82Ni13Zr5. Such a phenomenon is discussed from the points of view of structural stability and oxygen ion mobility in the crystalline and amorphous oxide phases.

Original languageEnglish
Pages (from-to)209-214
Number of pages6
JournalCorrosion Science
Volume88
DOIs
Publication statusPublished - 2014 Nov

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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