Deep oxidation of aluminum by a DC oxygen plasma

A novel way of oxidising aluminum using a DC oxygen plasma is described. The oxidation is carried out with a pressure of ∼0.1 bar, an electrical current lower than 3 mA, and a working distance between the electrodes of the order of 1 cm. The pressure is seen to have a stronger influence on the resul...

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Veröffentlicht in:Surface & coatings technology 2005-05, Vol.195 (2), p.168-175
Hauptverfasser: Baier-Saip, J.A., Avila, J.I., Tarrach, G., Cabrera, A.L., Fuenzalida, V., Zarate, R.A., Schuller, I.K.
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container_end_page 175
container_issue 2
container_start_page 168
container_title Surface & coatings technology
container_volume 195
creator Baier-Saip, J.A.
Avila, J.I.
Tarrach, G.
Cabrera, A.L.
Fuenzalida, V.
Zarate, R.A.
Schuller, I.K.
description A novel way of oxidising aluminum using a DC oxygen plasma is described. The oxidation is carried out with a pressure of ∼0.1 bar, an electrical current lower than 3 mA, and a working distance between the electrodes of the order of 1 cm. The pressure is seen to have a stronger influence on the results than the working distance. The process does not damage the surface and only minor differences are detected in the topography due to the expansion of the aluminum during oxidation. It is shown that the region affected by the plasma results in a ∼50-nm-thick amorphous aluminum oxide layer (OL). We find that the kinetics of oxide growth can be described as having two main sources, the main one originating from the plasma and the other from the surrounding ionized gas.
doi_str_mv 10.1016/j.surfcoat.2004.06.020
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source Elsevier ScienceDirect Journals Complete
subjects [B] AES
[B] AFM
[B] Amorphous
[B] Raman scattering spectroscopy
[B] SEM
[D] Aluminum oxide
Applied sciences
Corrosion
Corrosion environments
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals. Metallurgy
Other topics in materials science
Physics
title Deep oxidation of aluminum by a DC oxygen plasma
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