Title:
ALUMINUM SILICATE LUMINOUS MATERIAL EMITTING BLUE OR BLUISH GREEN LIGHT AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3488602
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject new compound capable of exciting with an electron beam, an ultraviolet light and a visible light indoors, outdoors and at a dark place such as underwater, exhibiting luminescence in blue to bluish green color, showing thermal stability and excellent chemical stability in an acidic and a reducing atmospheres.
SOLUTION: This compound is shown by the formula (Square make is a composition defective; M is one or more alkaline earth metals selected from magnesium, calcium, etc.; M* is one or more divalent metal elements selected from manganese, zinc, etc.; (n), (m) and (x) are numbers to satisfy 0≤n≤0.2, 0<x<0. 6, 0.0001≤m≤0.1) such as Sr0.995Eu0.005Al1.85Si0.15O40. The compound is obtained by baking raw material powder comprising an M element-containing compound, an M* element-containing compound, an aluminum element-containing compound and an Si element-containing compound or a compound containing silicon and Eu elements in the ratio of the composition formula together with sodium carbonate, etc.
Inventors:
Tadashi Endo
Common sense
Common sense
Application Number:
JP23896697A
Publication Date:
January 19, 2004
Filing Date:
August 20, 1997
Export Citation:
Assignee:
Lead Co., Ltd.
International Classes:
C09K11/08; C09K11/64; C09K11/77; C09K11/80; (IPC1-7): C09K11/64; C09K11/08
Domestic Patent References:
| JP1121552A | ||||
| JP9111236A | ||||
| JP4845480A | ||||
| JP62243680A | ||||
| JP62578A | ||||
| JP4820110B1 |
Attorney, Agent or Firm:
Hiroshi Hayashi (1 person outside)
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