| 摘要 |
A process for treating the surface of a fluorescent material comprises the steps of adding a suitable amount of water glass (K2O, SiO2) to a dispersion of a fluorescent material, the mixture of the dispersion and water glass being stirred, adding silica particulates to the mixture, and finally adding a suitable amount of metal salt to the mixture containing the silica particulates, whereby the silica particulates adhere to the surface of the fluorescent material. <IMAGE> |
