The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1985
Filed:
Oct. 17, 1984
Sumitomo Light Metal Industries, Ltd., Tokyo, JP;
Abstract
A method of producing high purity aluminum-lithium mother alloys essentially free from other alkali metals than lithium, which comprises electrolyzing a mixed molten salts consisting of 34 to 64 wt. % of lithium chloride and 66 to 36 wt. % of potassium chloride, and, optionally, 1 to 20 wt. % of sodium chloride based on a combined weight of the aforesaid two components, using solid aluminum as cathodes, and an .alpha.+.beta. phase aluminum lithium alloy electrode or the alloy coated electrode as a reference electrode, under a current density in the range of 0.005 to 1 A/cm.sup.2, whereby producing aluminum-lithium alloys on the cathode. During electrolyzing, the potential difference between the cathode and the reference electrode is continuously measured and differentiated with respect to time and at the point of a sudden change in the differentiated value, electrolyzing is stopped.