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. With the increase in the drawing, there are some cracks to be found, but not delamination. This shows that nickel coating and the substrate have a good combinable performance. Key words: electrodeposited... with thickness of 0.3 mm was used as substrate. A uniform nickel coating of 3 μm in thickness was prepared by electrodepositing method on both sides of the steel sheet. The coating was obtained......
as the pretreatment process for electroless nickel plating on magnesium alloys. Key words: magnesium alloy; AM60; electroplating zinc; electroless nickel plating; corrosion resistance 1 Introduction Magnesium... corrosion is easy to take place between the porous Ni-P film and metal substrate when the nickel plating is deposited directly on the substrate[6]. In order to decrease the galvanic corrosion between......
widely used to prepare this film, due to the increased adhesion of the film to substrate. In this paper, we describe the development of sputtered iron-doped nickel oxide films used as oxygen evolution catalysts. The effects of processing parameters including oxygen content, working pressure, RF power and substrate temperature on the electrochemical and physical properties of iron-doped nickel......
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]. The Chinese Journal of Nonferrous Metals, 2007, 17(5): 789-794. (in Chinese) [7] RAJAN AMBAT, ZHOU W. Electroless nickel-plating on AZ91D magnesium alloy: Effect of substrate microstructure and plating... film and destroys the protection of fluoride film on magnesium substrate. So, the potential decreases subsequently. Fig.7 Open circuit potential of magnesium alloy in different baths 3.4 Stability......
to substrates is excellent for their successful performance [3-4]. With the development of this material, the processing technique that the nickel is firstly electrodeposited on the steel substrate and then the coating and substrate are wholly formed is put forward instead of the process technique that the steel is firstly formed and then the production surface is electrodeposited by nickel coating......
coatings and magnesium alloy is fine. The maximum value of microhardness reaches HV367 when the content of nanoparticles is 10 g/L, however, the microhardness of the pure nickel coatings is HV274... alloys is adhesion wear, and that of pure nickel coating is exfoliation wear, respectively.Key words:magnesium alloy; nano-composite coatings; microstructure; wear resistance......
agent and a complexing agent for electroless nickel plating[5] and electroplating iron-alloy[6], Ni-W alloy[7], Cu-Ni alloy[8] baths. Citrate ions in the citrate bath react with nickel ions to form..., GALOVA M. Influence of boric acid on the electrochemical deposition of Ni [J]. J Solid State Electrochem, 2006, 10: 61-68. [2] GOLODNITKY D, GUDIN N V, VOLYANUK G A. Study of nickel-cobalt alloy......
a potential danger. The nickel is a kind of cathodic coating on the anodic magnesium alloy substrate. If there are through pores in the coating, severe galvanic corrosion will destroy the magnesium... [J]. Surface and Coatings Technology, 2007, 201: 4913-4918. [8] AMBAT R, ZHOU W. Electroless nickel-plating on AZ91D magnesium alloy: Effect of substrate microstructure and plating parameters [J......
electrodeposition on the substrate of 45# carbon steel. The effects of average current density on the surface morphology, microstructure, average grain size and microhardness of nickel coatings were..., the nanocrystalline nickel coatings were prepared by PJED on a substrate of 45# carbon steel and the influence of hydrogen evolution on the deposits was studied as well. The effects of average current density......