Zn-Mn alloy electrodeposition on steel

被引:37
作者
Bozzini, B [1 ]
Pavan, F [1 ]
Bollini, G [1 ]
Cavallotti, PL [1 ]
机构
[1] SOC PNEUMAT PIRELLI,BUSINESS UNIT,I-50063 FIGLINE VALDARNO,FI,ITALY
来源
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING | 1997年 / 75卷
关键词
D O I
10.1080/00202967.1997.11871168
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Electrodeposition of Zn-Mn (0 divided by 50 w/o) onto carbon steel sheet and wire is discussed in the present paper. An original bath is proposed and effects of stabilisers are studied. Baths and deposits are studied from the electrochemical and structural points of view. Electrochemical investigations include galvanostatic and potentiodynamic studies carried out in laboratory cells under natural and forced (rotating disk electrode) convection and a wire-plating pilot plant. Structural and compositional investigations include X-ray diffraction analyses, scanning electron imaging and energy dispersive analyses on steel sheet and wire. Electrochemical data can be correlated with alloy composition (limiting currents and how they are affected by mass transport conditions), morphological results (lamellar low-Mn vs. globular high-Mn) and crystallographic (metastable epsilon monophasic deposits in the high-Mn range, polyphasic low-Mn coatings) structure, the variables which have a bearing on functional properties of the coatings.
引用
收藏
页码:175 / 180
页数:6
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