Long decay luminescent material
    1.
    发明授权
    Long decay luminescent material 失效
    长衰变发光材料

    公开(公告)号:US5853614A

    公开(公告)日:1998-12-29

    申请号:US897000

    申请日:1997-07-21

    摘要: Long decay luminescent materials having improved long decay time and improved high brightness is represented by the formula as Sr.sub.0.9995 .about..sub.0.998 Eu.sub.0.0005 .about..sub.0.002)Al.sub.2 O.sub.4 .multidot.(Sr.sub.0.9995 .about..sub.0.998 Eu.sub.0.0005 .about..sub.0.002)O .multidot.n(Al.sub.1-a-b B.sub.b Dy.sub.a).sub.2 O.sub.3 in it a=0.0005.about.0.0002, b=0.0001.about.0.35, n=1.about.8 and the method for manufacturing the long decay luminescent materials is characterized in heating the raw materials as SrCo.sub.3, .alpha. type alumina, .gamma. type alumina, boron-containing compound, Eu.sub.2 O.sub.3 and Dy.sub.2 O.sub.3 gradually from 400.degree. C. up to 1250.degree. C..about.1600.degree. C. during 7.about.10 hours, firing it at 1250.degree. C..about.1600.degree. C. for 3.about.5 hours and then cooing it gradually from 1250.degree. C..about.1600.degree. C. down to 200.degree. C. during 7.about.10 hours and the heating, firing and cooling processes are all conducted under the condition of existence of carbon.

    摘要翻译: 具有改善的长衰减时间和改善的高亮度的长衰减发光材料由以下公式表示:Sr0.9995 DIFFERENCE 0.998Eu0.0005差异0.002)Al 2 O 4 x(Sr 0.9995差异0.998 Eu 0.0006 D 0.02 0.002)O xn(Al 1-a- bBbDya)2O3其中a = 0.0005差异0.0002,b = 0.0001分辨率0.35,n = 1差分8及其制造长衰变发光材料的方法的特征在于将原料加热为SrCo 3,α型氧化铝,γ型氧化铝, 含硼化合物,Eu 2 O 3和Dy 2 O 3从400℃逐渐降至1250℃。差速1600℃,7℃差10小时,在1250℃下焙烧5分钟,然后3小时 在12小时内将其从1250℃降温至1600℃,达到200℃,加热,焙烧和冷却过程均在碳存在的条件下进行。

    Long afterglow phosphor and a process for the preparing thereof
    2.
    发明授权
    Long afterglow phosphor and a process for the preparing thereof 失效
    长余辉荧光体及其制备方法

    公开(公告)号:US5885483A

    公开(公告)日:1999-03-23

    申请号:US703152

    申请日:1996-08-29

    IPC分类号: C09K11/77 C09K11/64

    CPC分类号: C09K11/7712

    摘要: The invention relates to a long afterglow phosphor and a process for preparing the phosphor, characterized in that the phosphor comprises the sinter expressed by a general formula MO.multidot.(n-x)�a Al.sub.2 O.sub.3.sup..alpha. .div.(1-a)Al.sub.2 O.sub.3.sup..gamma. !.multidot.B.sub.2 O.sub.3 : R, where, M represents and alkaline earth metal, R represents a rare earth element, 0.5

    摘要翻译: 本发明涉及一种长余辉荧光体及其制备方法,其特征在于,该荧光体包括通式为MOx(nx)[a Al 2 O 3αDIVIDED(1-a)Al 2 O 3] xB 2 O 3 :R, 其中,M表示碱土金属,R表示稀土元素,0.5≤a≤0.99,0.001,0:0,0,0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 可以用至少一种选自Mg,Ca和Ba的碱土金属代替。 除了Eu作为附加的活化剂之外,R还可以使用其它稀土元素。 制备本发明的长余辉荧光体的方法包括几个步骤,其中烧结温度需要在800-1200℃。