The synergy effect of elements on the oxidation resistance of a high-purity directionally solidification nickel-based superalloy

Guanqin Wang; Jinming Zhang; Yanzhao Li; Debiao Zhao; Yongqi Yang; Qiang Li; Kai Xie

Journal of Materials Research and Technology (Sep 2023)

The synergy effect of elements on the oxidation resistance of a high-purity directionally solidification nickel-based superalloy

Guanqin Wang,
Jinming Zhang,
Yanzhao Li,
Debiao Zhao,
Yongqi Yang,
Qiang Li,
Kai Xie

Affiliations

Guanqin Wang: Corresponding author. University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China; University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China
Jinming Zhang: University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China
Yanzhao Li: University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China
Debiao Zhao: University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China
Yongqi Yang: University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China
Qiang Li: Corresponding author. University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China; University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China
Kai Xie: University Featured Laboratory of Materials Engineering for Agricultural Machinery of Shandong Province, Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Weifang 262700, China

Journal volume & issue: Vol. 26
pp. 2796 – 2805

Abstract

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A study on the film characteristics of a Cr2O3-forming nickel-based superalloy is conducted. A triplex structure is observed, in which Ta–Ti layer is developed between the external Cr2O3 and inner Al2O3 layer. When the exposure time increased, Ti atoms are divorced from the Ta–Ti layer, filling the voids inside the Cr2O3 layer, which improve the density of the external Cr2O3 layer and retard the inward penetration of the nitrogen. As a result, the degree of internal nitrides is reduced. Consequently, the synergy effect of Ta and Ti in the Cr2O3 forming alloy is beneficial to improve the oxidation resistance.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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