Oxidation kinetics of overstoichiometric TiB2 thin films grown by DC magnetron sputtering
نویسندگان
چکیده
We systematically study the oxidation properties of sputter-deposited TiB2.5 coatings up to 700 °C. Oxide-scale thickness dox increases linearly with time ta for 300, 400, 500, and °C, while an oxidation-protective behavior occurs dox=250?ta0.2 at 600 Oxide-layer’s structure changes from amorphous rutile/anatase-TiO2 temperatures ? 500 Abnormally low rate °C is attributed a highly dense columnar TiO2-sublayer growing near oxide/film interface top-amorphous thin layer, suppressing oxygen diffusion. A model proposed explain oxide-scale evolution Decreasing heating 1.0 °C/min plays noticeable role in oxidation.
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ژورنال
عنوان ژورنال: Corrosion Science
سال: 2022
ISSN: ['1879-0496', '0010-938X']
DOI: https://doi.org/10.1016/j.corsci.2022.110493