Abstract
The resistance to oxidation of the W-alloyed magnetron sputtered &\#x3b3;-TiAl fine-crystalline 4&\#xa0;&\#x3bc;m thick coatings have were investigated in this work. The oxidation tests were performed in an atmosphere of pure oxygen or in the air at a temperature of 1173&\#xa0;K for 120&\#xa0;h. The resistance to high-temperature oxidation was investigated by means of micro-thermogravimetric analysis with continuous or stepwise control of the substrate weight. Before and after the oxidation the morphology of the coatings as well as their chemical and phase composition were investigated by SEM, EDS and EBSD, respectively. The results have been compared with those obtained for the uncoated &\#x3b3;-TiAl substrate.
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