Characteristics of plasma cladding Fe-based alloy coatings with rare earth metal elements
Characteristics of plasma cladding Fe-based alloy coatings with rare earth metal elements
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DOI：
10.1016/j.msea.2006.10.142
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发表时间：
2007-04
期刊：
影响因子：
6.4
通讯作者：
Limin Zhang;Dong-bai Sun;Hongying Yu
中科院分区：
文献类型：
--
作者：
Limin Zhang;Dong-bai Sun;Hongying Yu
The characteristics of plasma cladding Fe-based alloy coatings with rare earth (RE) oxide CeO2and La2O3have been investigated. Fe-based alloy powders with different contents of CeO2and La2O3were cladded onto a steel substrate. The clad coatings were examined and tested for microstructural features, chemical compositions, phase structures and hardness of the clad coatings. A scanning electron microscope (SEM) equipped with energy dispersive analysis X-rays energy dispersive spectrum (EDS) was employed to observe the microstructure and analyze the chemical compositions of the clad coatings. The crystallographic phases formed during plasma cladding were characterized by an X-ray diffractometer. And the microhardness was tested by HVS-1000 digital microhardness tester. The results showed that when the addition content of CeO2and La2O3was 0.5wt.%, the microstructure of the coatings could be refined and purified. And the dilution of clad material from the substrate was reduced. Moreover, some new compounds such as LaNi4Si and Ce2Ni22C3and hard crystallographic phase, Cr3Si, formed in the coatings and the microhardness values were higher than those of other coatings. The mechanism of the effects of RE oxide on the coating was discussed in the paper.
