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) Abstract: The electroless nickel-plating on as-cast Zr-Al alloy was studied. After degreasing, pickling, chemical conversion treatment, Ni-P coating on Zr-Al alloy was plated from the electroless plating solution. The microstructure and the phase composition of Zr-Al alloy, phosphate coating and Ni-P coating were observed using scanning electron microscopy (SEM) and XRD, respectively. The results......
circuit potential (OCP) curve of AZ31 magnesium alloy and to observe the morphology variation of Ni-P coating during the process of the electroless plating. The deposition mechanism of the electroless Ni-P plating on AZ31 Mg alloy was studied by OCP curve, scanning electron microscopy (SEM), and energy dispersion spectroscopy (EDS). The process of electroless Ni-P plating contains the coating formation......
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plating layer, which was integrated into the matrix metal, was obtained. The P content of the Ni-P coating reached 13.56% (mass fraction). The hardness value of the Ni-P coating was about HV 549. The polarization curve showed that the corrosion potential of the Ni-P coating reached -0.249 V (vs SCE). A long passivation region was found on the polarization curve, and this phenomenon indicated......
, %) Coating Ni P La Ce Ni-P 95.065 4.935 0 0 Ni-P (RE) 95.182 4.818 0 0 图3 稀土对Ni-P合金电沉积阴极极化曲线的影响... DOI:10.19476/j.ysxb.1004.0609.2000.s1.056 稀土对电沉积Ni-P合金镀层显微组织的影响 邵光杰 秦秀娟 于升学 荆天辅 姚枚 燕山大学材料化工学院!秦皇岛066004  ......
; 文献标志码:A Friction and wear properties of amorphous Ni-P coating prepared by electroless plating KONG De-jun1, 2, WANG Jin-chun1, LIU Hao1 (1. College of Mechanical..., respectively. The friction coefficients and wear performances of Ni-P coating and 5052 aluminum alloy were investigated with wear test, the wear resistance mechanism of Ni-P coating was discussed. The results......
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for the application of pretreatment-free Ni-P coating on AM60B magnesium alloy at low temperatures and the obtained coating was characterized by SEM, AFM, EDS and XRD techniques. Compact, uniform, and medium-phosphorus Ni-P coating with mixed crystalline-amorphous microstructure was obtained by applying a cathodic current density of 4 mA/cm2 at 50 °C. Also, island-like nickel clusters were deposited......
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, Changzhou 213016, China) Abstract: The Ni-P coating was prepared on the surface of 5052 type aluminium alloy with chemical plating, the surface and interface morphologies, compositions, microstructures and properties were characterized and analyzed by SEM, EDS and XRD, respectively. The results show that the Ni-P alloy coating by chemical plating is in an amorphous state and mainly composed of Ni element......