Effect of tungsten on the oxidation of alumina-forming austenitic stainless steel

As more W replaced Mo in alumina-forming austenitic stainless steels, weight gain by oxidation decreased after 336 h at 1053 K. Electron microscopy revealed slower growth of scale in the presence of more numerous second phases by W addition. The retardation of oxidation was attributed to the necessa...

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Detalles Bibliográficos
Autores principales: Kang, Jun-Yun, Ha, Heon-Young, Kim, Sung-Dae, Park, Jun Young, Jang, Min-Ho, Lee, Tae-Ho
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Singapore 2019
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7809583/
https://www.ncbi.nlm.nih.gov/pubmed/33580419
http://dx.doi.org/10.1186/s42649-019-0014-4
Descripción
Sumario:As more W replaced Mo in alumina-forming austenitic stainless steels, weight gain by oxidation decreased after 336 h at 1053 K. Electron microscopy revealed slower growth of scale in the presence of more numerous second phases by W addition. The retardation of oxidation was attributed to the necessary partitioning of W in front of the metal-oxide interface. The W-rich second phases interacted with growing oxides and finally transformed to fine particles of metallic W alloy within the scale.

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