Aluminum surface layer of nickel-molybdenum-phosphorus alloy Preparation

Title: Aluminum surface layer of nickel-molybdenum-phosphorus alloy Preparation and Catalytic Properties of
　　Author: Luo Yu Xia
　　Degree-granting units: Xi'an University of Electronic Science and Technology
　　Keywords: chemical plating;; amorphous alloy;; electrocatalysis;; methanol oxidation
　　Summary:
　　In this paper, the aluminum surface of the electroless nickel-molybdenum-phosphorus alloy layer alloy layer preparation process and performance. By orthogonal experiments to determine the best chemical plating process conditions, and in this condition Neodymium Magnets for modification of the coating doped; using XRD, SEM, anodic polarization and cyclic voltammetry testing methods such as layer on the alloy phase structure, surface morphology, corrosion resistance and catalytic activity, etc. were analyzed.
　　1 determined by orthogonal experiments prepared by chemical plating nickel-molybdenum-phosphorus alloy the optimum conditions, and by XRD, SEM test method for coating derived from the phase structure and surface morphology was analyzed.
　　2 by acid / alkali corrosion and anodic polarization method were investigated crystalline nickel-phosphorus alloy layer, amorphous nickel-phosphorus alloy layer and the layer of amorphous nickel-molybdenum-phosphorus alloy corrosion resistance.
　　3 In the optimum conditions, in the bath by adding rare earth elements cerium, precious metals platinum, solid particles such as titanium dioxide, the nickel-molybdenum-phosphorus alloy layer doped.
　　4 using cyclic voltammetry and AC impedance method to test the nickel-molybdenum-phosphorus alloy layer, the rare earth modified nickel-molybdenum-phosphorus alloy layer, the precious metals platinum modified nickel-molybdenum-phosphorus alloy layer and Titania-nickel-molybdenum-phosphorus alloy layer on the anode methanol the electro-catalytic oxidation activity.
　　5 The analysis of the impact of http://www.everbeenmagnet.com/en/products/110-sintered-neodymium-magnets nickel-molybdenum-phosphorus alloy layer electro-catalytic properties of the main factors.
　　The results show that nickel-molybdenum-phosphorus alloy layer showing amorphous characteristics, good corrosion resistance and surface morphology of the anodic oxidation of methanol has good electro-catalytic activity. By the method can be further doped nickel-molybdenum-phosphorus alloy layer to improve the catalytic activity of nickel-molybdenum-phosphorus alloy layer of catalytic activity is not only related to its own nature, but also by the electrochemical processes of the test parameters.
　　Degree Year: 2010