Thermal stability of amorphous oxide in Al87Ni3Y10 metallic glass

Kang Cheol Kim, Ka Ram Lim, Eun Sung Lee, Won Tae Kim, Annett Gebert, Jürgen Eckert, Do Hyang Kim

Research output: Contribution to journalShort survey

11 Citations (Scopus)

Abstract

The oxidation behavior of melt-spun Al87Ni3Y10 metallic glass at 873K is investigated in the present study. The simultaneous presence of aluminum and yttrium in the oxide markedly promotes the thermal stability of the amorphous oxide phase, enabling the growth of the amorphous oxide layer up to ~100nm thickness. The stability of the amorphous oxide can be enhanced by suppressing the nucleation of the crystalline oxide at the oxide/matrix interface. The dense structure of aluminum-yttrium oxide due to large difference in ionic radius between aluminum and yttrium ions disturbs the diffusion of oxygen ions through the amorphous oxide layer.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalCorrosion Science
Volume77
DOIs
Publication statusPublished - 2013 Jan 1

Fingerprint

Metallic glass
Oxides
Thermodynamic stability
Aluminum
Yttrium
Ions
Yttrium oxide
Nucleation
Oxygen
Crystalline materials
Oxidation

All Science Journal Classification (ASJC) codes

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

Cite this

Kim, Kang Cheol ; Lim, Ka Ram ; Lee, Eun Sung ; Kim, Won Tae ; Gebert, Annett ; Eckert, Jürgen ; Kim, Do Hyang. / Thermal stability of amorphous oxide in Al87Ni3Y10 metallic glass. In: Corrosion Science. 2013 ; Vol. 77. pp. 1-5.
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Thermal stability of amorphous oxide in Al87Ni3Y10 metallic glass. / Kim, Kang Cheol; Lim, Ka Ram; Lee, Eun Sung; Kim, Won Tae; Gebert, Annett; Eckert, Jürgen; Kim, Do Hyang.

In: Corrosion Science, Vol. 77, 01.01.2013, p. 1-5.

Research output: Contribution to journalShort survey

TY - JOUR

T1 - Thermal stability of amorphous oxide in Al87Ni3Y10 metallic glass

AU - Kim, Kang Cheol

AU - Lim, Ka Ram

AU - Lee, Eun Sung

AU - Kim, Won Tae

AU - Gebert, Annett

AU - Eckert, Jürgen

AU - Kim, Do Hyang

PY - 2013/1/1

Y1 - 2013/1/1

N2 - The oxidation behavior of melt-spun Al87Ni3Y10 metallic glass at 873K is investigated in the present study. The simultaneous presence of aluminum and yttrium in the oxide markedly promotes the thermal stability of the amorphous oxide phase, enabling the growth of the amorphous oxide layer up to ~100nm thickness. The stability of the amorphous oxide can be enhanced by suppressing the nucleation of the crystalline oxide at the oxide/matrix interface. The dense structure of aluminum-yttrium oxide due to large difference in ionic radius between aluminum and yttrium ions disturbs the diffusion of oxygen ions through the amorphous oxide layer.

AB - The oxidation behavior of melt-spun Al87Ni3Y10 metallic glass at 873K is investigated in the present study. The simultaneous presence of aluminum and yttrium in the oxide markedly promotes the thermal stability of the amorphous oxide phase, enabling the growth of the amorphous oxide layer up to ~100nm thickness. The stability of the amorphous oxide can be enhanced by suppressing the nucleation of the crystalline oxide at the oxide/matrix interface. The dense structure of aluminum-yttrium oxide due to large difference in ionic radius between aluminum and yttrium ions disturbs the diffusion of oxygen ions through the amorphous oxide layer.

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