کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5368621 | 1388404 | 2010 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Microstructures and properties of plasma sprayed FeAl/CeO2/ZrO2 nano-composite coating Microstructures and properties of plasma sprayed FeAl/CeO2/ZrO2 nano-composite coating](/preview/png/5368621.png)
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.
Journal: Applied Surface Science - Volume 256, Issue 13, 15 April 2010, Pages 4176-4184