2014•Cailiao baohuRequires access
Microstructure and Friction and Wear Behavior of Electro-Brush Plated Nickel/Nanoscale Yttrium Oxide Composite Coating
Ling Wen-da
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Abstract
Ni/nano-Y_2O_3 composite coating was prepared on 2Crl3 stainless steel by electro- brush plating.The effect of dosage of nano-Y_2O_3 on the microstructure as well as hardness and friction and wear behavior of as-obtained composite coating was investigated.Results showed that the Ni/nano-Y_2O_3 composite coating was more smooth and compact than electro- brush plated Ni coating.With the increase of nano-Y_2O_3,dosage in the electro-brush plating bath,the hardness of the composite coating initially rose and declined later.The Ni/nano-Y_2O_3 composite coating prepared from the plating bath containing15 g/L nano-Y_2O_3 consisted of fine grains and exhibited the maximum hardness,and its friction coefficient(0.20) was much lower than that of fast electro-brush plated Ni coating(0.38).The adhesion and peeling of the Ni/nano-Y_2O_3 composite coating were greatly mitigated,corresponding to its good wear resistance.