Oxygen permeation through thin zirconia/yttria membranes prepared by EVD

Jonghee Han, George Xomeritakis, Jerry Lin

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Ultra-thin dense zirconia/yttria membrane composites were fabricated by EVD technique on porous α-alumina substrates. The deposited membranes consisted primarily of cubic/tetragonal phases as determined by XRD. The EVD film growth rate estimated by SEM photographs was 3-4 μm/h. Oxygen permeation data of thin dense zirconia/yttria membranes with different thickness (2-15 μm) were measured at 900°C and 1000°C. From the oxygen permeation data, the surface reaction and bulk diffusion rate parameters, α and β, were calculated. At 900°C, α = 3.0 × 10-8 mol/cm2 · s · atm1/2 and β = 3.0 × 10-8 mol/cm · s · atm1/4 with activation energy 53 KJ/mol and 72 KJ/mol for α and β, respectively. Presence of steam in the high oxygen partial pressure side promoted electrochemical surface reaction.

Original languageEnglish (US)
Pages (from-to)263-272
Number of pages10
JournalSolid State Ionics
Volume93
Issue number3-4
StatePublished - Jan 1997
Externally publishedYes

Fingerprint

Yttrium oxide
zirconium oxides
Permeation
Zirconia
Surface reactions
Oxygen
membranes
Membranes
surface reactions
oxygen
Aluminum Oxide
Composite membranes
Steam
Film growth
photographs
steam
Partial pressure
partial pressure
Alumina
aluminum oxides

Keywords

  • Membranes
  • Oxygen permeation
  • Yttria
  • Zirconia

ASJC Scopus subject areas

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Oxygen permeation through thin zirconia/yttria membranes prepared by EVD. / Han, Jonghee; Xomeritakis, George; Lin, Jerry.

In: Solid State Ionics, Vol. 93, No. 3-4, 01.1997, p. 263-272.

Research output: Contribution to journalArticle

Han, Jonghee ; Xomeritakis, George ; Lin, Jerry. / Oxygen permeation through thin zirconia/yttria membranes prepared by EVD. In: Solid State Ionics. 1997 ; Vol. 93, No. 3-4. pp. 263-272.
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