A study on the electrodeposition of palladium - iron alloy and its electrocrystallization mechanism 鈀鐵合金共沉積行為及其成核機(jī)理的研究
In the fourth chapter of this thesis , the initial stages of electrocrystallization of nickel on vitreous carbon from a leaching solution containing ammonia and chloride were illustrated in terms of cyclic voltammetric and chronoamperometric techniques 在第四章中,通過采用循環(huán)伏安法和恒電位階躍法研究了氨絡(luò)合物體系中鎳存玻璃碳上電結(jié)晶的初期行為。
The results show that the deposition of nickel on the substrate do not undergo upd process , but undergoes nucleation process . in the experimental conditions , the electrocrystallization of nickel follows the mechanism of three dimensional progressive nucleation and growth 結(jié)果表明,鎳在該基體上的沉積沒有經(jīng)歷upd過程,鎳的電沉積經(jīng)歷了晶核形成過程,在所研究的外加電位范圍內(nèi),其電結(jié)晶按連續(xù)成核和三維生長方式進(jìn)行,外加電位對晶體生長具有顯著的影響。
According to the i - t curves of potential step , it was revealed that electrocrystallization of ni - w - b alloy on glassy carbon followed the mechanism of instantaneous nucleation and three dimensional growth with diffusion controlled . the crystal nucleus number on the surface of electrode raised by the increase of over potential 根據(jù)電位階躍的i t曲線分析得知,在玻摘要碳電極上ni wb合金電結(jié)晶過程遵從擴(kuò)散控制瞬時成核三維成長模式進(jìn)行,且隨著過電位的增加,電極表面上晶核數(shù)增多。