Oxidation resistance of the supercooled liquid in Cu 50Zr 50 and Cu 46Zr 46Al 8 metallic glasses

Ka Ram Lim, Won Tae Kim, Eun Sung Lee, Sang Soo Jee, Se Yun Kim, Do Hyang Kim, Annett Gebert, Jurgen Eckert

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The oxidation behavior of Cu 50Zr 50 and Cu 46Zr 46Al 8 glasses during continuous heating up to 1073 K has been investigated, with special emphasis on the oxidation resistance in the supercooled liquid (SCL) state. For Cu 50Zr 50, the oxide layer mostly consists of monoclinic ZrO 2 (m-ZrO 2), while for Cu 46Zr 46Al 8, the oxide layer consists of two different layers: an outer layer consisting of tetragonal ZrO 2 (t-ZrO 2) + Al 2O 3 + metallic Cu (oxidation product from the SCL state of the glass matrix) and inner layer comprised of m-ZrO 2 + metallic Cu islands (oxidation product from the crystallized matrix). Cu-enriched regions consisting of Cu 51Zr 14 (in Cu 50Zr 50) or AlCu 2Zr + Cu 70Zr 15Al 15 + Cu 51Zr 14 (in Cu 46Zr 46Al 8) are present below the oxide layer. The present study shows that the addition of Al (8 at.%) in Cu 50Zr 50 results in a significant deterioration of the oxidation resistance in the SCL state since the solutionizing of Al in t-ZrO2 leads to a higher oxygen ion vacancy concentration, thus providing a higher activity of oxygen ions.

Original languageEnglish
Pages (from-to)1178-1186
Number of pages9
JournalJournal of Materials Research
Volume27
Issue number8
DOIs
Publication statusPublished - 2012 Apr 28

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oxidation resistance
Oxidation resistance
Metallic glass
metallic glasses
Oxides
Oxidation
Liquids
liquids
Ions
Oxygen
Glass
oxygen ions
oxidation
Vacancies
Deterioration
oxides
Heating
glass
products
matrices

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Lim, Ka Ram ; Kim, Won Tae ; Lee, Eun Sung ; Jee, Sang Soo ; Kim, Se Yun ; Kim, Do Hyang ; Gebert, Annett ; Eckert, Jurgen. / Oxidation resistance of the supercooled liquid in Cu 50Zr 50 and Cu 46Zr 46Al 8 metallic glasses. In: Journal of Materials Research. 2012 ; Vol. 27, No. 8. pp. 1178-1186.
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abstract = "The oxidation behavior of Cu 50Zr 50 and Cu 46Zr 46Al 8 glasses during continuous heating up to 1073 K has been investigated, with special emphasis on the oxidation resistance in the supercooled liquid (SCL) state. For Cu 50Zr 50, the oxide layer mostly consists of monoclinic ZrO 2 (m-ZrO 2), while for Cu 46Zr 46Al 8, the oxide layer consists of two different layers: an outer layer consisting of tetragonal ZrO 2 (t-ZrO 2) + Al 2O 3 + metallic Cu (oxidation product from the SCL state of the glass matrix) and inner layer comprised of m-ZrO 2 + metallic Cu islands (oxidation product from the crystallized matrix). Cu-enriched regions consisting of Cu 51Zr 14 (in Cu 50Zr 50) or AlCu 2Zr + Cu 70Zr 15Al 15 + Cu 51Zr 14 (in Cu 46Zr 46Al 8) are present below the oxide layer. The present study shows that the addition of Al (8 at.{\%}) in Cu 50Zr 50 results in a significant deterioration of the oxidation resistance in the SCL state since the solutionizing of Al in t-ZrO2 leads to a higher oxygen ion vacancy concentration, thus providing a higher activity of oxygen ions.",
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Oxidation resistance of the supercooled liquid in Cu 50Zr 50 and Cu 46Zr 46Al 8 metallic glasses. / Lim, Ka Ram; Kim, Won Tae; Lee, Eun Sung; Jee, Sang Soo; Kim, Se Yun; Kim, Do Hyang; Gebert, Annett; Eckert, Jurgen.

In: Journal of Materials Research, Vol. 27, No. 8, 28.04.2012, p. 1178-1186.

Research output: Contribution to journalArticle

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T1 - Oxidation resistance of the supercooled liquid in Cu 50Zr 50 and Cu 46Zr 46Al 8 metallic glasses

AU - Lim, Ka Ram

AU - Kim, Won Tae

AU - Lee, Eun Sung

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AU - Kim, Se Yun

AU - Kim, Do Hyang

AU - Gebert, Annett

AU - Eckert, Jurgen

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N2 - The oxidation behavior of Cu 50Zr 50 and Cu 46Zr 46Al 8 glasses during continuous heating up to 1073 K has been investigated, with special emphasis on the oxidation resistance in the supercooled liquid (SCL) state. For Cu 50Zr 50, the oxide layer mostly consists of monoclinic ZrO 2 (m-ZrO 2), while for Cu 46Zr 46Al 8, the oxide layer consists of two different layers: an outer layer consisting of tetragonal ZrO 2 (t-ZrO 2) + Al 2O 3 + metallic Cu (oxidation product from the SCL state of the glass matrix) and inner layer comprised of m-ZrO 2 + metallic Cu islands (oxidation product from the crystallized matrix). Cu-enriched regions consisting of Cu 51Zr 14 (in Cu 50Zr 50) or AlCu 2Zr + Cu 70Zr 15Al 15 + Cu 51Zr 14 (in Cu 46Zr 46Al 8) are present below the oxide layer. The present study shows that the addition of Al (8 at.%) in Cu 50Zr 50 results in a significant deterioration of the oxidation resistance in the SCL state since the solutionizing of Al in t-ZrO2 leads to a higher oxygen ion vacancy concentration, thus providing a higher activity of oxygen ions.

AB - The oxidation behavior of Cu 50Zr 50 and Cu 46Zr 46Al 8 glasses during continuous heating up to 1073 K has been investigated, with special emphasis on the oxidation resistance in the supercooled liquid (SCL) state. For Cu 50Zr 50, the oxide layer mostly consists of monoclinic ZrO 2 (m-ZrO 2), while for Cu 46Zr 46Al 8, the oxide layer consists of two different layers: an outer layer consisting of tetragonal ZrO 2 (t-ZrO 2) + Al 2O 3 + metallic Cu (oxidation product from the SCL state of the glass matrix) and inner layer comprised of m-ZrO 2 + metallic Cu islands (oxidation product from the crystallized matrix). Cu-enriched regions consisting of Cu 51Zr 14 (in Cu 50Zr 50) or AlCu 2Zr + Cu 70Zr 15Al 15 + Cu 51Zr 14 (in Cu 46Zr 46Al 8) are present below the oxide layer. The present study shows that the addition of Al (8 at.%) in Cu 50Zr 50 results in a significant deterioration of the oxidation resistance in the SCL state since the solutionizing of Al in t-ZrO2 leads to a higher oxygen ion vacancy concentration, thus providing a higher activity of oxygen ions.

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