Please wait a minute...
Acta Phys. -Chim. Sin.  2003, Vol. 19 Issue (11): 996-1000    DOI: 10.3866/PKU.WHXB20031102
A Kinetic Model for the Electrolytic Codeposition of α-Al2O3 Particles with Co-Ni Alloy
Wu Gang;Li Ning;Wang Dian-Long;Zhou De-Rui
Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001
Download:   PDF(1442KB) Export: BibTeX | EndNote (RIS)      

Abstract  A new kinetic model for the electrolytic codeposition of α-Al2O3 particles with Co-Ni alloys on a rotation disk electrode is presented, which is based on the balance of force acting on a particle near the electrode surface. Adsorption strength of particles on the electrode was used to describe the force intensity of the interaction between the particles and the electrode. The critical adsorption strength was used to classify the adsorption into effective adsorption and non-effective adsorption. Only when the adsorption strength of a particle is above the critical value, the adsorption becomes effective and may be incorporated into the deposit. The probability of the particles being effective adsorption dependents on the average adsorption strength, which is effected by the force acting on the particle. A kinetic mathematical model relating the content of embedded particles to suspension concentration was deduced. This relationship was verified experimentally by the codeposition systems of α-Al2O3/Co-Ni at the current density ranged from 1 to 20 A•dm-2. The variation of the content of particles in deposits with current density is an overall balance of two opposing effects, which leads to a maximum on the particle content against current density curves. Some model parameters were determined also by comparing theory and experimental data.

Key wordsKinetic model      Electrochemical codepositon mechanism      Adsorption strength      Co-Ni alloys      α-Al2O3     
Received: 03 April 2003      Published: 15 November 2003
Cite this article:

Wu Gang;Li Ning;Wang Dian-Long;Zhou De-Rui. A Kinetic Model for the Electrolytic Codeposition of α-Al2O3 Particles with Co-Ni Alloy. Acta Phys. -Chim. Sin., 2003, 19(11): 996-1000.

URL:     OR

[1] Gan XIAO,Yu-Sheng ZHANG,Guang-Jun JIANG. Systematic Construction and Validation of the Reduced Chemical Kinetic Model of Gasoline Multi-Component Surrogate Fuel[J]. Acta Phys. -Chim. Sin., 2016, 32(4): 879-892.
[2] Huan-Feng TANG,Zai-Yin HUANG,Ming XIAO,Min LIANG,Li-Ying CHEN. An Investigation into the Reaction Kinetics of Cubic Nano-Cu2O in Theory and Experiment[J]. Acta Phys. -Chim. Sin., 2016, 32(12): 2891-2897.
[3] PANG Bin, XIE Mao-Zhao, JIA Ming, LIU Yao-Dong. Improved Phenomenological Soot Model for Multicomponent Fuel Based on Variations in PAH Characteristics with Fuel Type[J]. Acta Phys. -Chim. Sin., 2013, 29(12): 2523-2533.
[4] COLE Christine Lind, QIAN Hong. Simple Chemical Model for Facilitated Transport with an Application to Wyman-Murray Facilitated Diffusion[J]. Acta Phys. -Chim. Sin., 2010, 26(11): 2857-2864.
[5] ZHAO Wei-Tao, CHEN Hai-Xiang, ZHOU Jian-Jun, LIU Nai-An. Characteristics and Kinetics of Forest Peat Pyrolysis[J]. Acta Phys. -Chim. Sin., 2009, 25(09): 1756-1762.
[6] CHEN Hai-Xiang;LIU Nai-An;FAN Wei-Cheng. Two-step Consecutive Reaction Model of Biomass Thermal Decomposition by DSC[J]. Acta Phys. -Chim. Sin., 2006, 22(07): 786-790.
[7] Wu Gang;Li Ning;Zhou De-Rui;Xu Bo-Qing. Influence of α-Al2O3 Nanoparticles on the Anomalous Electrodeposition of Co-Ni Alloys[J]. Acta Phys. -Chim. Sin., 2004, 20(10): 1226-1232.