Topic
Electroless nickel plating
About: Electroless nickel plating is a research topic. Over the lifetime, 1593 publications have been published within this topic receiving 14940 citations.
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Journal Article•
TL;DR: In this article, a nickel-phosphor coating was prepared on the surface of AZ91D magnesium alloy by electroless plating, which was so uniform and dense that it had no obvious surface defects.
Abstract: A nickel-phosphor coating was prepared on the surface of AZ91D magnesium alloy by electroless plating.The coating was so uniform and dense that it had no obvious surface defects.The structure of the coating was single phase (Ni) by X-ray diffraction and the adhesion was good by quenching.By dynamic potential polarization,it was shown that the free corrosion potential of the coating approached -0.4 V(SCE) and it had evident passivation.The coating had better corrosion resistance than the substrate,and had extensive application prospect.
6 citations
Patent•
30 Apr 1999
TL;DR: In this paper, the authors proposed a method to prevent a sliding part from being oxidized by catalytic action of an iron element, and improve reliability in breaking operation by constituting the sliding part by arranging a prescribed shielding film on a surface of a nitrogen compound, formed on a member containing iron or an iron compound.
Abstract: PROBLEM TO BE SOLVED: To prevent lubricating oil applied to a sliding part from being oxidized by the catalytic action of an iron element, and improve reliability in breaking operation by constituting the sliding part by arranging a prescribed shielding film on a surface of a nitrogen compound, formed on a surface of a member containing iron or an iron compound. SOLUTION: A nitrogen compound layer 2 is formed by performing gas nitriding treatment on iron or an iron base material 1 of a siding structure. A high strength diffusing layer 3 is diffusedly formed in the iron base material 1 during soft nitriding treatment time. Next, an Fe3 O4 film 4 as a shielding film is formed by superheated steam treatment. Therefore, an iron element in the iron base material 1 and the nitrogen compound layer 2 is restrained from acting as a catalyst to accelerate the oxidation of lubricating oil 5 applied to an upper surface, and the lubricating oil 5 is solidified by oxidation, and sliding resistance increases, and the occurrence of operational failures or non- operability is prevented, and rust preventive effect of iron parts is also improved. A nickel-electroplating film, an electroless nickel plating film or an electroless nickel-PTFE plating film may also be formed as the shielding film.
6 citations
TL;DR: In this article, the coefficient of performance of a vapour compression refrigeration system can be improved if a reducer is added to the system, which can improve the efficiency of the system.
Abstract: Nowadays, refrigeration systems are important for industrial and domestic applications. The coefficient of performance of a vapour compression refrigeration system can be improved if a redu...
6 citations
Journal Article•
TL;DR: In this paper, an electroless plating Ni-P alloy on the cenospheres surface was obtained through activation process without palladium, and the effects on the plating velocity and plating bath were investigated.
Abstract: The metal-modified cenospheres can be used as conductive composite filler to make electromagnetic shielding or microwave absorbing materials.The electroless plating Ni-P alloy on the cenospheres surface was obtained through activation process without palladium in this paper.The effects on the plating velocity and plating bath were investigated.The results of ESEM,energy dispersive X ray spectroscopy(EDS) and RXD analysis indicated that the Ni-P alloy could be plated on the surface of cenospheres homogenously,and presented amorphous phase.The activation mechanism of electroless nickel plating on the surface of cenospheres was discussed.
6 citations
Journal Article•
6 citations