電鍍鎳-鐵-二氧二鈦複合鍍層之研究

The Study of Electroplating Composite Ni-Fe-TiO2 Coating

洪鴻鈞(Hong, Hong Juin)

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(1995年)

摘要

無資料

關鍵字

複合電鍍 ； 旋轉圓盤電極 ； 共沉積促進劑 ； 表面電位

並列摘要

Abstract Ni-Fe-TiO2 ccomposite coating was
deposited potentiostatically on the rotating disk electrode by
adding inert particle TiO2 into Ni-Fe plating bath. We study
the variations Ni,Fe and TiO2 within coatings at different TiO2
bulk concentrations, pH values and disk rotation speeds.
Generally,the surface charge of the particle in the plating
solution affectsthe plating process. We studied the zeta
potential of the particles in various plating solutions using
Zeta Meter. To obtain significant amount of TiO2 within the
deposite and improve the stability of the composite coating,we
add the promoting agent-Tl2SO4 into thesolution. It was found
that the partial current densities of Ni,Fe are increased
whenadding a slight amount of TiO2. However the current
densities of Ni,Fe are inhibited when adding large amounts of
TiO2. Content of TiO2 in the deposit is higher when the disk
rotation is decreased.The partial current densities of Ni,Fe are
increased at a higher solution pH value,but the TiO2 content is
decreased. The TiO2 content is increased significantly by
adding Tl+ to the platingsolution.The deposited rate of Fe is
inhibited while Ni is enhanced at the adding of Tl+. The
surface morphology of composite coating was studied by scaning
electronmicrograph.

並列關鍵字

composite plating ； rotating disc electrode ； codeposition promoting agent