کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5361110 | 1388269 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The comparative study on microstructure and properties of nano-CeO2 and Sm2O3 particulate reinforced nickel-based composites by laser deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Micron size Ni-based alloy (NBA) powders are mixed with both 1.5Â wt% nano-CeO2 (n-CeO2) and nano-Sm2O3 (n-Sm2O3) powders. These mixtures are coated on low carbon steel by laser deposition. Based on the thermodynamic characteristic of rare earth oxides, evolution of microstructure and variety of phase and properties of the coatings by the addition of n-CeO2 and Sm2O3 powders to NBA have been investigated comparatively. The morphology of dendrite is transformed from bulky without n-CeO2 and Sm2O3 into fine and compact with the addition of 1.5% n-CeO2 and Sm2O3. And lamellar spacing of the eutectic of n-CeO2/NBA is smaller than that of n-Sm2O3/NBA. The microhardness, wear resistance and corrosion resistance of the coatings are greatly improved by n-CeO2 and Sm2O3 powder addition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 22, 15 September 2008, Pages 7446-7452
Journal: Applied Surface Science - Volume 254, Issue 22, 15 September 2008, Pages 7446-7452
نویسندگان
Shihong Zhang, Mingxi Li, Jae Hong Yoon, Tong Yul Cho, Chan Gyu Lee, Yizhu He,