Composite plated part and manufacturing method thereof
A manufacturing method and composite plating technology, applied to contact parts, electrical components, coatings, etc., can solve problems such as inaccessible contacts or terminals with high life expectancy and high friction coefficient
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Embodiment 1
[0039] As carbon particles, 6% by weight of flaky graphite particles having an average particle diameter of 5 μm was added to 3 L of pure water, and the mixed solution was heated up to 50° C. while stirring. Next, 1.2 L of a 0.1 mol / L potassium persulfate aqueous solution was slowly added dropwise to the mixed solution as an oxidizing agent, followed by stirring for 2 hours to carry out oxidation treatment, followed by filtration with filter paper and washing with water.
[0040] The carbon particles before and after the oxidation treatment were analyzed using a purge-and-trap gas chromatography-mass spectrometer (Japan Analytical Industry JHS-100) (GCMAS QP-5050A manufactured by Shimadzu Corporation) to analyze the gas generated by heating at 300°C. , lipophilic aliphatic hydrocarbons (such as nonane, decane, 3-methyl-2-heptene, etc.) and lipophilic aromatic hydrocarbons (such as xylene) adhering to the carbon particles have been removed by the above oxidation treatment.
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Embodiment 2
[0050] A composite plated material was produced in the same manner as in Example 1 except that the ultrasonic cleaning time was 250 seconds.
[0051] For the obtained composite plated material, the area ratio (area ratio) occupied by the carbon particles on the surface of the composite plated film was calculated by the same method as in Example 1. As a result, the area ratio was 26 area%, the area ratio of the composite plated article before the treatment to remove part of the surface carbon was 64 area%, and the change in the area ratio based on the treatment of removing part of the surface carbon was 38 area% (=64 area%-26 area%), and the rate of change of the area ratio was 59 area% (=(64-26) area%×100 / 64 area%).
[0052] Moreover, arithmetic average roughness Ra was calculated by the same method as Example 1 about the obtained composite plated material, and it was 0.55 micrometers.
[0053] Moreover, the wear resistance was evaluated by the same method as Example 1 about ...
Embodiment 3
[0056]The same raw material as in Example 1 was used as the cathode, and the Ni electrode plate was used as the anode. In a nickel plating bath composed of 80g / L nickel sulfamate and 45g / L boric acid, the , current density 4A / dm 2 Electroplating (Ni plating) was performed for 30 seconds while stirring, and Ag strike plating was performed after forming a Ni plating film with a thickness of 0.3 μm on the raw material. A composite plated article was produced by the same method as in Example 1.
[0057] For the obtained composite plated material, the area ratio (area ratio) occupied by the carbon particles on the surface of the composite plated film was calculated by the same method as in Example 1. As a result, the area ratio was 32 area%, the area ratio of the composite plated article before the treatment to remove part of the carbon on the surface was 64 area%, and the change in the area ratio based on the treatment to remove part of the surface carbon was 32 area% (=64 area%-...
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Abstract
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