Formation of Al2O3 Scales on Single-Phase RuAl Produced by Reactive Sintering
作者： F Soldera , N Ilić , S Brännström , I Barrientos , H Gobran
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摘要: The oxidation behavior of single-phase RuAl produced by powder metallurgy combined with arc melting was investigated. Oxidation conducted at 1000°C; oxide scale growth and phase formation were studied using scanning-electron microscopy (SEM) x-ray diffraction (XRD). A dense protective an Al–depleted sublayer formed during oxidation. is the stable α-Al2O3. oxide-scale morphology shows presence whiskers, a needle-like form, which suggests that outward diffusion Al. At beginning, follows parabolic law, but, after 100 hr oxidation; rate slower than expected from law.
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