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XPS STUDIES FOR AN IRON-ZIRCONIUM INTERFACE IN AN OXIDIZING ENVIRONMENT

1995; World Scientific; Volume: 02; Issue: 06 Linguagem: Inglês

10.1142/s0218625x95000686

1793-6667

Y.S. Li, W. Liu, P.C. Wong, K.A.R. Mitchell,

Corrosion Behavior and Inhibition

A bimetallic film of iron and zirconium (thicknesses about 17 and 52 Å respectively) was deposited on a gold substrate and studied by XPS after exposing to O 2 (approximately 10 3 L) at room temperature, and then heating at progressively higher temperatures up to 400°C. An iron-oxide/iron/zirconiumoxide sandwich structure is present after the room-temperature exposure to O 2 , and this work shows the ready transfer of O from the iron side to the zirconium side of the Fe/Zr interface. Fe migration also occurs at 220°C and above, while by 300°C this diffusion appears to cause a substantial restructuring of the ZrO 2 layer.