The Role of Mass Transfer in the Formation of the Composition and Structure of CoW Coatings Electrodeposited from Citrate Solutions

被引：24
作者：
Belevskii, S. S. [1 ]
Cesiulis, H. [2 ]
Tsyntsaru, N. I. [1 ]
Dikusar, A. I. [1 ,3 ]
机构：
[1] Moldavian Acad Sci, Inst Appl Phys, MD-2028 Kishinev, Moldova
[2] Vilnius State Univ, LT-03225 Vilnius, Lithuania
[3] Shevchenko Trans Dniester State Univ, Tiraspol, Moldova
来源：
SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY | 2010年 / 46卷 / 06期
关键词：
W COATINGS; INDUCED CODEPOSITION; COBALT; ELECTROLYTES; BEHAVIOR; ALLOYS; IRON; DEPOSITION; NICKEL;
D O I：
10.3103/S1068375510060050
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The effect of the hydrodynamic conditions on the electrode process's rate and the composition and structure of cobalt-tungsten coatings electrodeposited from citrate solutions is studied. The rate of the electrode process depends on the hydrodynamic conditions. However, the electrochemical impedance data do not reveal the presence of slow diffusion processes. The analysis of the electrochemical impedance spectra shows the occurrence of slow adsorption processes, such as an intermediate adsorption stage. It is assumed that the hydrodynamic conditions have a strong effect on the surface state rather than on the mass transfer from the solution's bulk to the electrode.
引用
收藏
页码：570 / 578
页数：9
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