发明授权
US4952422A A method of coating a layer of an yttrium vanadate phosphor contained in
a fluorescent lamp with Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 and lamps
made therefrom
失效
用Y 2 O 3或Al 2 O 3或由其制成的灯在荧光灯中涂覆钒酸钇荧光体层的方法
- 专利标题： A method of coating a layer of an yttrium vanadate phosphor contained in a fluorescent lamp with Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 and lamps made therefrom
- 专利标题（中）： 用Y 2 O 3或Al 2 O 3或由其制成的灯在荧光灯中涂覆钒酸钇荧光体层的方法
-
申请号： US161643申请日： 1988-02-29
-
公开(公告)号： US4952422A公开(公告)日： 1990-08-28
- 发明人: Romano G. Pappalardo , Thomas E. Peters , Roger B. Hunt, Jr.
- 申请人： Romano G. Pappalardo , Thomas E. Peters , Roger B. Hunt, Jr.
- 申请人地址： MA Waltham
- 专利权人： GTE Laboratories Incorporated
- 当前专利权人： GTE Laboratories Incorporated
- 当前专利权人地址： MA Waltham
- 主分类号： C04B41/50
- IPC分类号： C04B41/50 ; C04B41/87 ; C09K11/02 ; C09K11/77
摘要：
A fluorescent lamp containing a Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 coating on a layer of yttrium vanadate phosphor and a method of coating the layer of the yttrium vanadate phosphor with a continuous protective coating of Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 is described. The method comprises applying a coating of a metal, such as yttrium or aluminum, on the yttrium vanadate phosphor then lehring the metallic coating at about 500.degree. C. to about 625.degree. C. to form a continuous protective coating of Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 overlaying the layer of phosphor.
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