| 摘要 |
PURPOSE:To improve luminous flux deterioration in lighting a fluorescent lamp, provide a green color component of three-wavelength type fluorescent lamps and industrially obtain an inexpensive fluorescent substance, by introducing Mn into a zinc silicate fluorescent substance matrix, quick heating and quenching the surface of the above-mentioned fluorescent substance particles at a specific temperature. CONSTITUTION:Mn is introduced into a fluorescent substance matrix of zinc silicate and the surfaces of the above-mentioned fluorescent substance particles are quick heated and quenched within the temperature range of 1,000-1,300 deg.C, preferably in a reducing atmosphere for several sec - several min using a rotary kiln, vibrokiln, etc., to afford the aimed fluorescent substance. Furthermore, a fluorescent substance prepared by preapplying an organic high polymer, such as PVA, in an amount of, e.g. 0.01-0.5wt.%, is preferably quick heated and quenched in an inert gas atmosphere.
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