Some Investigations on Co-Ni Alloy Bright Plating
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概要
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Behaviors of various plating solution of Co-Ni alloy series used in our country are investigated and properties of the electrodeposited alloys are examined.The result obtained is as follows:(1) Formate is an effective baffer indispensable to the plating solution of low pH value. As a buffer for cathode film boric acid is also effective.(2) Hardness of the deposit of Co-Ni alloy bright plating is between 500 and 600 Vickers, and is not affected by the adition of organic brightener and magnesium sulphate.(3) Electron-diffraction examination reveals that the deposit of Co-Ni alloy plating has no clear orientation, but consists of fine grains.
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