Analysis of KMNO4 /NaOH Battery Header Cleaning Procedure

摘要

KMnO4 /NaOH solutions are used to remove the oxides that form on the stainless steel conductor of battery headers during high-temperature glass sealing operations. The cleaning procedure has been evaluated to determine if these corrosive solutions damage TA-23 glass insulators to a degree that would make the headers unacceptable. Battery headers and solid pieces of TA-23 glass were tested, and a colorimetric method was developed to analyze reaction products in the solutions. The analyses showed that the solutions contained 1--10 mu g SiO2 per mL, indicating minimal deterioration of the glass. The procedure is an acceptable method for cleaning battery headers containing TA-23 glass insulators. 11 refs., 4 figs., 2 tabs. (ERA citation 14:011152)