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98739 Role of tin in the depassivation of PbCaSn alloys maintained in deep discharge conditions of lead/acid batteries

Product Number: 51300-98739-SG
ISBN: 98739 1998 CP
Author: Ph. Steyer, E. Rocca, J.P. Hilger, J. Steinmetz, P. Steinmetz
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The tin content of the lead-calcium-tin alloys, used in the positive grids of the Ieadfacid batteries, must be controlled at a sufficient level to avoid passivation, mainly under deep discharge conditions. The passivation phenomenon is attributed to the formation of a semiconductive PbO layer, growing under a porous superficial layer of PbSO4. Electrochemical measurements, as well as TEM and SIMS experiments have established that the PbO growth is controlled by the diffusion of ... Keywords : lead/acid batteries, corrosion, passivation, lead-calcium-tin alloys, electrochemistry, TEM, SIMS
The tin content of the lead-calcium-tin alloys, used in the positive grids of the Ieadfacid batteries, must be controlled at a sufficient level to avoid passivation, mainly under deep discharge conditions. The passivation phenomenon is attributed to the formation of a semiconductive PbO layer, growing under a porous superficial layer of PbSO4. Electrochemical measurements, as well as TEM and SIMS experiments have established that the PbO growth is controlled by the diffusion of ... Keywords : lead/acid batteries, corrosion, passivation, lead-calcium-tin alloys, electrochemistry, TEM, SIMS
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