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首页> 外文期刊>International Journal of Electrochemical Science >Role of Aluminide Coating on Oxidation Resistance of Ni-Based Single Crystal Superalloy at 900 °C
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Role of Aluminide Coating on Oxidation Resistance of Ni-Based Single Crystal Superalloy at 900 °C

机译：铝化物涂层在900°C下对镍基单晶高温合金抗氧化性的作用

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摘要

In the present study, the role of aluminide coating on oxidation resistance of Ni-based single crystalsuperalloy was studied at 900 C. The oxidation kinetics curves obey the parabolic law in bothconditions. However, the significant difference was found after 100 h oxidation in both conditions. Thecoated specimens showed a better oxidation resistance than the uncoated ones. This is due to the phasetransformation occurred from Al2O3 to Al2O3 in the coated specimens with increasing oxidationtime but not in the uncoated ones. The production of more Al2O3 during oxidation is expected sinceAl2O3 acts as a protective layer against oxidation due to its stability at high temperatures. It could bealso recognized from the surface morphology of the oxidized coated specimen after 500 h oxidation.
机译：在本研究中，研究了铝化物涂层在900°C下对Ni基单晶高温合金抗氧化性的作用。在两种条件下，氧化动力学曲线均符合抛物线定律。但是，在两种条件下氧化100小时后，都发现了显着差异。涂层样品比未涂层样品具有更好的抗氧化性。这是由于随着氧化时间的增加，涂层样品中Al2O3发生了向Al2O3的相变，而未涂层样品则没有。由于Al2O3由于其在高温下的稳定性而起着抗氧化保护层的作用，因此有望在氧化过程中产生更多的Al2O3。从500 h氧化后的氧化涂层标本的表面形态也可以识别出它。

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