Abstract:
A lead-antimony alloy is disclosed containing 0.5-3.5% by weight antimony, 0.025-0.3% by weight arsenic, 0.005-0.1% by weight selenium, 0.002-0.05% by weight tin, 0.01-0.1% by weight copper, balance lead. The alloy also preferably contains from 0.025-0.1% by weight silver.
Abstract:
A method for manufacturing a hardened lead storage battery electrode wherein fine, particulate solids, that are insoluble in lead, are incorporated into a lead matrix. The method includes the steps of incorporating solids, dissolved or suspended in an electrolyte, into a lead matrix such that shaping simultaneously occurs during the deposition of lead due to a suitable fashioning of a plurality of electrically conductive surface regions; vigorously agitating the electrolyte by introducing air through an apertured plate in the bottom of an electrolyte vessel providing an electro-chemical cell including a cathode and a Cu/Ta/Pt anode and an electrolyte solution including HBF.sub.4 and an electrolyte selected from PbO, Pb(OH).sub.2 and PbCO.sub.3 or including a graphite anode and an electrolyte solution of Fe(BF.sub.4).sub.2 and Fe(BF.sub.4).sub.3. The electrolyte is prepared from a raw material selected from lead, waste material containing lead and desulfured lead storage battery electrolyte paste. The deposition is carried out at a current density of about 100 to about 2000 A/m.sup.2.