Temperature Effect on Early Oxidation Behavior of NiCoCrAlY Coatings: Microstructure and Phase Transformation

被引：0
作者：
A. Ullah
A. Khan
Z. B. Bao
Y. F. Yang
M. M. Xu
S. L. Zhu
F. H. Wang
机构：
[1] University of Chinese Academy of Sciences,Shi
[2] Chinese Academy of Sciences,Changxu Innovation Center for Advanced Materials, Institute of Metal Research
[3] Anhui University of Technology,Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Ministry of Education, School of Materials Science and Engineering
[4] Jinan University,Institute of Advanced Wear and Corrosion Resistant and Functional Material
[5] Northeastern University,Shenyang National Laboratory for Materials Science
来源：
Acta Metallurgica Sinica (English Letters) | 2022年 / 35卷
关键词：
CrAlY coating; Phase transformation; Isothermal oxidation; Temperature effect;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Initial oxidation behavior of NiCoCrAlY coating prepared by arc-ion plating has been studied in air at 900, 1000 and 1100 °C. The results showed that phase transformation from transient θ-Al2O3 to α-Al2O3 was highly related to the temperature and oxidation time. The oxide scale in the initial stage was mainly composed of θ-Al2O3 at 900 °C. Instead, more amount of α-Al2O3 emerged out with increasing oxidation temperature. The elemental distribution after oxidation confirmed that faster chromium diffusion to the oxide scale played an important role in the speedy transformation from θ-Al2O3 to α-Al2O3. Y segregation at scale/coating interface resulted in less cavity formation and hence improved the oxide scale adherence.
引用
收藏
页码：975 / 984
页数：9
相关论文
共 160 条
[1]  
Goward GW(1998)undefined Surf. Coat. Technol. 108–109 73-undefined
[2]  
Wang X(2013)undefined Corros. Sci. Prot. Technol. 25 175-undefined
[3]  
Xin L(2005)undefined Mater. Des. 26 223-undefined
[4]  
Wei H(2003)undefined Acta Metall. Sin. Engl. Lett. 51 5775-undefined
[5]  
Zhu S(2021)undefined Acta Metall. Sin. Engl. Lett. 18 1-undefined
[6]  
Wang F(2018)undefined Vacuum 155 55-undefined
[7]  
Pomeroy MJ(2019)undefined Surf. Coat. Technol. 357 1037-undefined
[8]  
Williams JC(2018)undefined Acta Mater. 159 150-undefined
[9]  
Srarke EA(2017)undefined Corros. Sci. 126 317-undefined
[10]  
Liu YL(2004)undefined Surf. Coat. Technol. 188–189 153-undefined
12345678910