引用本文:田立辉,李长久,李成新,杨冠军.大气等离子喷涂球磨Fe-Al合金制备FeAl涂层及其结构表征[J].中国表面工程,2010,(2):20~25
TIAN Li–hui, LI Chang–jiu, LI Cheng–xin, YANG Guan–jun.Characterization of the Microstructure of Atmospheric Plasma-sprayed FeAl Intermetallics Using Mechanically Alloyed Fe-Al Powder[J].China Surface Engineering,2010,(2):20~25
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大气等离子喷涂球磨Fe-Al合金制备FeAl涂层及其结构表征
田立辉,李长久,李成新,杨冠军
西安交通大学,材料科学与工程学院,金属材料强度国家重点实验室,西安,710049?
摘要:
FeAl金属间化合物具有良好的抗高温氧化和硫化、抗高温冲蚀性能与较高的高温强度，且密度小、成本低。将FeAl用作SOFC支撑体材料，不仅可提高SOFC的高温强度，而且可显著降低其制作成本。本研究采用机械合金化工艺制备了Fe–35Al粉末，通过大气等离子喷涂（APS）制备了FeAl涂层。利用XRD、SEM表征了球磨粉末及热处理前后涂层的微观结构。研究结果表明，通过大气等离子喷涂球磨粉末，可以制备出FeAl金属间化合物涂层，涂层经800 ℃热处理30 h后，可提高FeAl相的有序度。
关键词:  大气等离子喷涂  机械合金化  FeAl金属间化合物  固体氧化物燃料电池  支撑体
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基金项目:
Characterization of the Microstructure of Atmospheric Plasma-sprayed FeAl Intermetallics Using Mechanically Alloyed Fe-Al Powder
TIAN Li–hui, LI Chang–jiu, LI Cheng–xin, YANG Guan–jun
State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049
Abstract:
FeAl intermetallic compound is a promising high temperature structural material owing to its excellent mechanical, physical and chemical properties such as oxidation and sulfuration resistances, low density, and low cost. The low cost feature and high temperature performance makes FeAl be a promising candidate material as support in SOFC. In this study, atmospheric plasma spraying (APS) was employed to fabricate FeAl intermetallics deposit. Fe–35Al alloy powder prepared by mechanical alloying was used as the feedstock powders. The effect of annealing treatment on the microstructure of FeAl coating was investigated. The microstructure of the powder and coating was characterized by XRD and SEM. The results showed that the FeAl intermetallic coating could be prepared by atmospheric plasma spraying of the ball–milled Fe(Al) powder. The order parameter of FeAl could be enhanced after the annealing treatment at 800oC for 30 h.
Key words:  atmospheric plasma spraying (APS)  mechanical alloying  FeAl intermetallic compound  solid oxide fuel cells (SOFCs)  support
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