Micro-crystalline Fe-Cr-Ni-Al-Y2O3ODS alloy coatings produced by high frequency electric-spark deposition

被引：28
|
作者：
He, Y
Pang, H
Qi, H
Wang, D
Li, Z
Gao, W
机构：
[1] Univ Auckland, Dept Chem & Mat Engn, Auckland 1, New Zealand
[2] Univ Sci & Technol Beijing, Ctr Corros & Protect, Beijing 100083, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2002年 / 334卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
ODS alloy coatings; micro-crystallization; high-frequency electric-spark deposition; high-temperature oxidation;
D O I：
10.1016/S0921-5093(01)01805-6
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fe-Cr-Ni-Al-Y2O3 oxide dispersion strengthened (ODS) alloy coatings were deposited on the surface of 1Cr18Ni9Ti stainless steel by using high-frequency electric-spark technique. The composition of these ODS coatings was determined by the interaction between the electrode material MA956 ODS alloy and the substrate alloy. These ODS coatings possess micro- or nano-crystalline structure with metallurgical bonding to the substrates. The microstructures of the dispersed oxide particles were observed by TEM. High-temperature oxidation was performed in air at 1000 degreesC. Results indicated that the selective oxidation of Cr was greatly promoted and the scale spallation resistance was significantly improved. The synergistic effects of micro-crystallization and dispersed Y2O3 particles on the oxidation behaviors have been discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：179 / 186
页数：8
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