| 摘要 |
1,131,806. Luminescent materials. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 1 Aug., 1966 [30 July, 1965], No. 34352/66. Heading C4S. A luminescent material consisting of apatite Ba, Ca or Sr halophosphate activated by trivalent Sb is made by mixing an Sb oxychloride with a first apatite Ba, Ca or St halophosphate and heating at 1000‹ to 1300‹ C. The first halophosphate may be Ca chlorofluorophosphate activated by Mn and made by heating CaHPO 4 , CaCO 3 , CaF 2 , MnNH 4 PO 4 and NH 4 Cl at 700‹ C. Cd may be added and the material used in a I.p. Hg vapour discharge lamp. |
