Electrochemical corrosion of Pb-1 wt% Sn and Pb-2.5 wt% Sn alloys for lead-acid battery applications

被引：35
|
作者：
Osorio, Wislei R. [1 ]
Peixoto, Leandro C. [1 ]
Garcia, Amauri [1 ]
机构：
[1] Univ Estadual Campinas, UNICAMP, Dept Mat Engn, BR-13083970 Campinas, SP, Brazil
来源：
JOURNAL OF POWER SOURCES | 2009年 / 194卷 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
As-cast Pb-Sn alloys; Lead-acid battery; Cellular array; Electrochemical impedance; Corrosion resistance; SULFURIC-ACID; IMPEDANCE SPECTROSCOPY; SB ALLOY; ANTIMONY ELECTRODE; ANODIC LAYER; TIN ALLOYS; AL-ALLOYS; BEHAVIOR; RESISTANCE; GRIDS;
D O I：
10.1016/j.jpowsour.2009.06.051
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The aim of this study was to compare the electrochemical corrosion behavior of as-cast Pb-1 wt% Sn and Pb-2.5 wt% Sn alloy samples in a 0.5 M H(2)SO(4) Solution at 25 degrees C. A water-cooled unidirectional solidification system was used to obtain the as-cast samples. Electrochemical impedance spectroscopy (EIS) diagrams, potentiodynamic polarization curves and an equivalent circuit analysis were used to evaluate the electrochemical corrosion response. It was found that a coarse cellular array has a better electrochemical corrosion resistance than fine cells. The pre-programming of microstructure cell size of Pb-Sn alloys can be used as an alternative way to produce as-cast components of lead-acid batteries with higher corrosion resistance associated with environmental and economical aspects. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1120 / 1127
页数：8
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