高速・ニッケル/リン合金電鋳技術の開発とマイクロ研削用工具への応用(機械要素,潤滑,工作,生産管理など)

概要

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An attempt to develop a high-speed electroforming technique that can produce fine nickel/phosphorous alloy at high speed was made, in order to fabricate a microgrinding tool with superior bending strength. The amount of phosphorous acid dissolved in the plating solution was increased in order to decrease the deposited Ni/P grain size. The amount of nickel hydroxide that is commonly used for adjusting the pH of the plating solution to a fixed value was used to increase the current efficiency for high-speed electroforming. In addition, citric acid was employed as a pH buffer agent to prevent plating burn when the amount of nickel oxide increased. The current efficiency was successfully increased from 5 to 60% by using a citric bath where the pH of the plating solution was increased by the addition of nickel hydroxide. In addition, it was verified through the bending test that an electroformed coating with a deposited Ni/P grain size of 20 Å pocessed the same bending strength as the cemented carbide that is commonly used for the cutting tool.
一般社団法人日本機械学会の論文
2004-06-25