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A Computational Study on the Effect of Minor Yttrium on the Interfacial Adherence of Al Oxide film to Aluminum Substrate.

08:00 EDT 11th April 2019 | BioPortfolio

Summary of "A Computational Study on the Effect of Minor Yttrium on the Interfacial Adherence of Al Oxide film to Aluminum Substrate."

It is well documented that minor rare-earth can improve interfacial adherence of oxide films to passive metallic substrates. However, such benefit vanishes when the amount of rare-earth increases. The mechanism for such a change has never been well clarified. This article reports our ab initio calculations to investigate the role that yttrium plays in promoting the interfacial adherence of Al oxide film to Al substrate. Influences of Y3+-ions on Al2O3/Al interfacial bonding, strength of Y-doped Al2O3 layer and that of Y-contained Al substrate were analyzed. Efforts are made to elucidate the beneficial effect of minor yttrium on the interfacial bonding and how an opposite effect is caused as the amount of yttrium increases.

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This article was published in the following journal.

Name: Journal of physics. Condensed matter : an Institute of Physics journal
ISSN: 1361-648X
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Medical and Biotech [MESH] Definitions

Stable yttrium atoms that have the same atomic number as the element yttrium, but differ in atomic weight. Y-89 is the only naturally occurring stable isotope of yttrium.

Unstable isotopes of yttrium that decay or disintegrate emitting radiation. Y atoms with atomic weights 82-88 and 90-96 are radioactive yttrium isotopes.

An element of the rare earth family of metals. It has the atomic symbol Y, atomic number 39, and atomic weight 88.91. In conjunction with other rare earths, yttrium is used as a phosphor in television receivers and is a component of the yttrium-aluminum garnet (YAG) lasers.

Nitrogen oxide (N2O). A colorless, odorless gas that is used as an anesthetic and analgesic. High concentrations cause a narcotic effect and may replace oxygen, causing death by asphyxia. It is also used as a food aerosol in the preparation of whipping cream.

Factors that modify the effect of the putative causal factor(s) under study.

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