Method for forming electroplated coating on surface of article
A kind of article, ionization potential technology, applied in the direction of magnetic film to substrate application, circuit, electrical components, etc., can solve the problems of low film deposition efficiency, increased cost, weak adhesion, etc.
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[0063] Hereinafter, the present invention will be explained in more detail by referring to the following experiments, but it should be understood that the present invention is not limited thereby.
[0064] Experiment A (forming a plating film on the surface of a ring-shaped rare earth bonded magnet)
[0065] An alloy powder composed of particles with an average major axis diameter of 150μm containing 12% atomic percent of Nd, 77% Fe, 6% B, and 5% Co was prepared by a rapid curing process, and an additive concentration of 2% by weight was used. Oxygen resin mixing. The resulting mixture is 686N / mm 2 Compression molding was performed under a pressure of 150°C, followed by treatment at 150°C for 1 hour. In this way, a ring-shaped bonded magnet having an outer diameter of 30 mm, an inner diameter of 28 mm, and a length of 4 mm (hereinafter referred to as "magnet sample") was obtained, and this magnet sample was subjected to subsequent experiments.
example 1
[0067] EPO ROVAL (the trade name of a commercially available product of ROVAL; when processed, it produces a Rockwell hardness of M80, and is based on an epoxy resin containing zinc powder with an average particle diameter of 4 μm) is used as an epoxy resin containing dispersed therein Zinc powder is a non-conductive resin, and is diluted with EPO diluent (trade name of a commercially available product of ROVAL) at a weight ratio of 1:0.5 (EPO ROVAL: diluent). By uniformly stirring the resulting product, a non-conductive resin solution containing zinc powder dispersed therein is obtained. By operating an air spraying device equipped with a spray gun with an aperture of 1.5 mm, the solution thus obtained was used to spray the entire surface of the magnet sample under a spray pressure of 0.2 Mpa. Therefore, by drying at normal temperature (20°C) for 60 minutes and drying at 200°C for 30 minutes, a film with a thickness of 15 μm (measured by observing the cross-section) was formed on...
example 2
[0077] By using the same non-conductive solution containing zinc powder dispersed therein as in Example 1, and by performing the same process as in Example 1, a non-conductive coating made of resin containing zinc powder dispersed therein is obtained and has been Magnet sample polished by barrel. After the barrel polished magnet sample containing the non-conductive coating formed thereon was ultrasonically cleaned for 3 minutes with water, the magnet sample was immersed in the same plating solution as the Watt solution used in Example 1. The difference between Example 2 and Example 1 is that it passes at 1.5A / dm 2 Apply voltage from the initial stage of immersion at a current density of 120 minutes, and perform a Ni electroplating process for 120 minutes. Therefore, a Ni plating film was formed on the outermost surface of the magnet sample.
[0078] The thus-obtained magnet sample containing the Ni plating film on the outermost surface was ultrasonically cleaned for 3 minutes with...
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Abstract
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