Nano/micro-laminated (ZrO2-Y2O3)/(Al2O3-Y2O3) composite coatings and their oxidation resistance

被引：2

作者：

Yao, Mingming

He, Yedong

Wang, Deren

Gao, Wei

机构：

[1] Univ Auckland, Sch Engn, Auckland 1, New Zealand

[2] Univ Sci & Technol Beijing, Beijing Key Lab Corros Eros & Surface Technol, Beijing 100083, Peoples R China

[3] Jinan Univ, Sch Chem & Chem Engn, Jinan 250022, Peoples R China

来源：

OXIDATION OF METALS | 2007年 / 68卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

nano/micro-laminated coating; ZrO2-Y2O3; Al2O3-Y2O3; high-temperature oxidation; Fe-25Cr-7Ni-N alloy;

D O I：

10.1007/s11085-007-9057-y

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Nano/micro-laminated (ZrO2-Y2O3)/(Al2O3-Y2O3) composite coatings were deposited onto an Fe-25Cr-7Ni-N alloy substrate by using alternate electrochemical and sintering processes. The thickness of each layer was in the range of 80-500 nm. Experimental results indicated that the multi-laminated coatings were more effective in providing oxidation resistance than monolithic ZrO2-Y2O3 or Al2O3-Y2O3 coatings, with the oxidation resistance of the former increasing with increasing number of laminated layers. The microstructural studies suggest that the laminated coatings possess the advantages of these two types of coatings and avoid the weakness of single ZrO2-Y2O3 or Al2O3-Y2O3 coatings. Reactive elements Y and Zr also played a role in this nano-layered setting in improving the oxidation resistance of the coatings.

引用

页码：1 / 8

页数：8

共 31 条

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