| 摘要 |
569,473. Light-sensitive cells. STANDARD TELEPHONES & CABLES, Ltd. Nov. 26,1942, No. 16824. Convention date, July 12, 1941.. [Class 40 (iii)] [Also in Groups II and XXXVI] A base metal of a selenium rectifier or photocell unit is first " selenided " or coated with a metal-selenimn compound, before the usual coat of selenium is applied. Base metals mentioned include iron, nickel, zinc and. magnesium-aluminium alloy, and the preferred method of " seleniding " is by immersion in an aqueous solution containing selenious acid and nitric acid. |
