Electrodeposition & characterization of Co-W alloys

被引：0
|
作者：
Maruthi, BN
Ramesh, L
Mayanna, SM [3 ]
Landolt, D
机构：
[1] Indal Elect Ltd, Najangud, India
[2] Ecole Polytech Fed Lausanne, Phys Chem Lab, CH-1015 Lausanne, Switzerland
[3] Bangalore Univ, Dept Chem, Cent Coll, Bangalore, Karnataka, India
来源：
PLATING AND SURFACE FINISHING | 1999年 / 86卷 / 03期
关键词：
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Cobalt-tungsten alloys have been electroplated from alkaline bath solutions under different plating and bath conditions. Diammonium hydrogen citrate and dimethyl sulfoxide in the bath solution have produced good quality deposits. The hardness and magnetic properties of the alloys are found to depend on composition and heat treatment. Cyclic voltammetric and spectral studies revealed the complexation of cobalt ions with diammnonium hydrogen citrate in the plating bath solution. Dimethyl sulfoxide has activated the codeposition of tungsten. The alloys are amorphous under plating conditions and become partially crystalline upon heat treatment. AES analysis revealed the absence of oxygen, chlorine and carbon on the surface of the coated alloys. Working conditions were optimized to get good quality deposits with appreciable coercivity and hardness values.
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页码：85 / 89
页数：5
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