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Three protective coatings (TiAlCr coating, TiAlN+Al 2 O 3 and TiAlYN/CrN+Al 2 O 3 ) were deposited on a Ti–45Al–8Nb alloy and exposed at 750°C for oxidation test for 5000h. The materials with Al 2 O 3 top coat showed much better resistance than TiAlCr coating where mainly TiO 2 and Al 2 O 3 phases developed. The corrosion kinetics...
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