(1. 昆明理工大學(xué) 材料與冶金工程學(xué)院，昆明 650093；
2. 曲靖師范學(xué)院 化學(xué)與生命科學(xué)系，曲靖 650011)
摘 要: 將陽離子型ZFS促進(jìn)劑與SiO2微粒加入Zn-Fe合金鍍液中，制備了Zn-Fe-SiO2復(fù)合鍍層，研究了ZFS共沉積促進(jìn)劑對鍍層中SiO2微粒沉積量的影響，并分析了促進(jìn)劑的作用機(jī)理。結(jié)果表明：ZFS共沉積促進(jìn)劑可以明顯提高SiO2微粒在鍍層中的沉積量，并且無需對SiO2微粒進(jìn)行鍍前特殊處理。其原因是該促進(jìn)劑吸附在SiO2微粒表面，使微粒表面呈正電性，在電場引力的作用下，SiO2微粒容易吸附在陰極表面并與還原金屬實(shí)現(xiàn)復(fù)合共沉積。
關(guān)鍵字: 復(fù)合電沉積；ZFS促進(jìn)劑；機(jī)理；吸附
composite electrodeposition
（1. Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology,
Kunming 650093, China;
2. Faculty of Chemistry and Life Sciences, Qujing Normal University, Qujing 650011, China）
Abstract:Cation-additive ZFS and SiO2 particles were added into Zn-Fe alloy electrolyte, and Zn-Fe-SiO2 composite coatings were obtained. Effect of additive ZFS on SiO2 content in the coating was studied, and the action mechanism of additive ZFS during composite electrodepositing was analyzed. The results show that additive ZFS can markedly improve the SiO2 content in the composite coating with no pre-treatment on SiO2 particles because SiO2 particles attached with additive ZFS show positive charge and the electric field gravitation between SiO2 particles and cathode makes SiO2 particles absorb onto the cathode and deposit with reductive metal easily.
Key words: composite electrodeposition; additive ZFS; mechanism; adsorption
