Influence of codoping with Hf and La on grain‐boundary transport in alumina

The role of reactive elements (RE) is an important topic in understanding the oxidation behavior of high‐temperature alloys. In this work, the influence of codoping alumina with two different RE elements (500 ppm Hf + 500 ppm La) was studied. The kinetics of oxygen grain‐boundary (GB) transport were...

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Veröffentlicht in:	Journal of the American Ceramic Society 2021-01, Vol.104 (1), p.514-523
Hauptverfasser:	Wu, Qian, Yu, Zhiyang, Wang, Yan, Diercks, David, Gorman, Brian P., Rickman, Jeffrey M., Harmer, Martin P., Chan, Helen M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alumina Aluminum oxide Composition Depletion diffusion/diffusivity dopants/doping Doping Grain boundaries Oxidation Scanning transmission electron microscopy segregation
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