| 摘要 |
1,239,888. Uses of luminescence. FORD MOTOR CO. Ltd. 15 April, 1970 [1 May, 1969], No. 17923/70. Heading C4S. [Also in Division H1] A photosensitive slurry containing Gd 2 O 3 or Y 2 O 2 particles with a stabilized pH of not more than 6 is treated with a source of fluoride ions to precipitate GdF 3 or YF 3 on to the oxide particles then applied to the face of a C.R.T. and exposed to light to fix the slurry and form a phosphor coating. The slurry may comprise isopropyl and polyvinyl alcohol, NH 4 dichromate and Eu doped Gd 2 O 3 to which NH 4 F is added and the pH adjusted with an acetic acid -NH 4 acetate system. |
