Analysis of the initial oxidation layer of W-substituted alumina-forming heat-resistant steel

被引：1

作者：

Ha, Heon-Young ^{[1
]}

Lee, Tae-Ho ^{[1
]}

Kim, Sung-Dae ^{[1
]}

Kang, Jun-Yun ^{[1
]}

Jang, Jae Hoon ^{[1
]}

Moon, Joonoh ^{[1
]}

Jang, Min-Ho ^{[2
]}

Hong, Hyun-Uk ^{[3
]}

机构：

[1] Korea Inst Mat Sci, Adv Met Div, Chang Won, South Korea

[2] Hyundai Steel, Surface Coating Dev Team, Dangjin, South Korea

[3] Changwon Natl Univ, Dept Mat Convergence & Syst Engn, Chang Won, South Korea

来源：

PHILOSOPHICAL MAGAZINE | 2021年 / 101卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

Alumina; STEM; stainless steels; oxidation; XPS;

D O I：

10.1080/14786435.2021.1873447

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-temperature oxidation behaviour of an alumina-forming austenitic (AFA, Fe-balance-20Ni-14Cr-2.5Al-0.15Si-2Mn-2.5Mo-0.9Nb, in wt%) steel and W-substituted AFA steel was examined. The isothermal oxidation tests were performed on the two steels at 780 degrees C for 2 weeks in air, which indicated that the substitution of W for Mo was beneficial to improve the oxidation resistance of the AFA steel. After oxidation at 780 degrees C for 30 min, more compact and protective initial oxide layer against cation diffusion was formed on the W-substituted AFA steel than that of the original AFA steel, which was considered to be responsible for the reduced weight gain after the long-term oxidation.

引用

页码：907 / 928

页数：22

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