PRODUCTION OF SELF-ACTIVATED ZINC OXIDE FLUORESCENT MATERIAL

摘要

PURPOSE:To improve the excellent burning characteristics of a self-activated zinc oxide fluorescent material. CONSTITUTION:An alumina-modified colloidal silica or a colloidal silica and an alumina sol are used as the surface-treating substance for coating the surface of the particle of a fluorescent material. The surface-treated fluorescent material has 0.001-0.1wt.% of the alumina and silica attached to the surface. The fluorescent material has high compatibility with the surface-treating substance. The surface-treating substance protects the Zn on the crystal surface from the continuous stimulation of electron ray, suppresses the temperature increase of the fluorescent material caused by electron ray and the chemical change of the crystal surface caused by thermal reduction and improves the burning characteristics of the fluorescent material.