Microstructures and properties of plasma sprayed FeAl/CeO2/ZrO2 nano-composite coating

被引：37

作者：

Yin, Bin ^{[1
,2
]}

Liu, Guang ^{[1
,2
]}

Zhou, Huidi ^{[1
]}

Chen, Jianmin ^{[1
]}

Yan, Fengyuan ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2010年 / 256卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Plasma spraying; Intermetallic compound; Nano-composite coating; Mechanical property; Friction and wear; TRIBOLOGICAL PROPERTIES; MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; EROSION BEHAVIOR; WEAR-RESISTANCE; ABRASIVE WEAR; CEO2; HARDNESS; PERFORMANCE; OXIDATION;

D O I：

10.1016/j.apsusc.2010.01.121

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Commercial FeAl powders and ZrO2 nano-particles as well as CeO2 additive were reconstituted into a novel multi-compositional feedstock powders via spray drying. The resulting feedstock powders were used to deposit FeAl/CeO2/ZrO2 nano-composite coating by plasma spraying on 1Cr18Ni9Ti stainless steel. An X-ray diffractometer (XRD), a scanning electron microscope equipped with an energy dispersive spectrometer (SEM/EDS), and a field emission scanning electron microscope equipped with an energy dispersive spectrometer (FESEM/EDS) were employed to characterize the microstructure of the as-prepared feedstock powders and nano-composite coating. At the same time, the mechanical properties and friction and wear behavior of the nano-composite coating and pure FeAl coating were comparatively evaluated by using a Vickers microindentation tester and ball-on-disk sliding wear tribotester, respectively. And the wear mechanisms for the two types of coatings are discussed in terms of their microstructure and mechanical properties. Results indicate that the nano-composite coating has a much higher hardness and fracture toughness as well as drastically increased wear resistance than pure FeAl coating, which could be mainly attributed to the reinforcing effect of ZrO2 nano-particles and partially attributed to the refining effect of CeO2 in the nano-composite coating. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：4176 / 4184

页数：9

共 42 条

[1] The room temperature strengthening effect of boron as a function of aluminum concentration in FeAl [J].