環盤電極研究鎳鐵合金之動力行為

Use Rotation Ring Disk To Study The Kinetic Behavior Of Nickel-Iron Alloy

邱樹國

指導教授 ： 尹庚鳴

元智大學/工程學院/化學工程與材料科學學系/碩士(2001年)

摘要

我們建立一套即時快速的鎳鐵合金電鍍過程分析工具。利用旋轉環盤電極(RRDE)之雙工作電極特性能分別操控環與盤電位，我們能對電鍍合金成份，以及鍍液穩定性做一分析。工作的內容包含:( i )以盤上合金鍍層剝離法，求取Ni-Fe合金電鍍之各分電流密度。部分剝除電荷會被環收集因為在環上Fe(Ⅱ)會被氧化成Fe(Ⅲ)。根據收集效率的觀念我們可以算出各別的反應速率; (ii) 在含錯合劑之剝離液中，剝離盤上鎳鐵合金鍍層方式來算出金屬離子錯合反應率。我們可以評估不同錯合劑對Fe(Ⅱ)或Ni(Ⅱ)之錯合效應，研究增進鑄液穩定性的方法。

關鍵字

鎳鐵合金電鍍 ； 旋轉環盤電極 ； 錯合劑

並列摘要

We develop a fast analytical method for nickel-iron electrodeposition system. Due to the double working electrode nature characteristics of RRDE which can individually control ring and disk potential, we can evaluate the alloy composition and the stability of the plating bath. The content of the study includes : (i) Measurement of the Ni-Fe alloy partial current densities by stripping the deposited alloy on the disk. Part of the stripping charges are collected by the ring by oxidizing Fe(II) to Fe(III). With the concept of collection efficiency, one can calculate the individual reaction rates. (ii) Determine the complexation rate of the metal ions by stripping the disk nickel-iron alloy on the complexant-containing solution. We may evaluate the effects of various complexants on Fe(II) or Ni(II) and to find the method to improve the bath stability.

並列關鍵字

nickel-iron electrodeposition ； rotating ring-disk electrode ； complexing agent

參考文獻

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