Method for producing cadmium free green emitting cathodoluminescent
phosphor
    1.
    发明授权
    Method for producing cadmium free green emitting cathodoluminescent phosphor 失效
    用于生产无镉自由绿光发光磷光体的方法

    公开(公告)号:US4038205A

    公开(公告)日:1977-07-26

    申请号:US702624

    申请日:1976-07-06

    IPC分类号: C09K11/64 C09K11/30

    CPC分类号: C09K11/642

    摘要: A green emitting ZnS : Cu, Al cathodoluminescent phosphor having x and y coordinate values of from 0.250 to 0.280 and 0.560 to 0.615 respectively, is produced by a critical firing schedule exemplified by slow heating to about 1000.degree. C, soaking at this temperature for about 1 hour, followed by slow cooling at about 3.degree. C per minute to 700.degree. C, followed by air quenching. The phosphor is useful for example, in tri-color television color television cathode ray tube.

    Method for preparing zinc orthosilicate phosphor
    2.
    发明授权
    Method for preparing zinc orthosilicate phosphor 失效
    制备原硅酸铅荧光粉的方法

    公开(公告)号:US5188763A

    公开(公告)日:1993-02-23

    申请号:US865732

    申请日:1992-04-09

    IPC分类号: C09K11/59 C09K11/67

    摘要: A manganese-activated zinc orthosilicate phosphor having the empirical formula:Zn.sub.(2.00-x-y) Mn.sub.x SiO.sub.(4.00-y) (WO.sub.3).sub.zwherein:0.04.ltoreq.x.ltoreq.0.15;0.ltoreq.y.ltoreq.0.05; and0.ltoreq.z.ltoreq.0.002is provided. A method for preparing the above described phosphor is also disclosed. The method comprises blending a method for preparing manganese-activated zinc orthosilicate phosphor having the empirical formula:Zn.sub.(2.00-x-y) Mn.sub.x SiO.sub.(4.00-y) (WO.sub.3).sub.zwherein:0.04.ltoreq.x.ltoreq.0.15;0.ltoreq.y.ltoreq.0.05; and0.ltoreq.z.ltoreq.0.002;the method comprising: blending a zinc source, a manganese (II) source, a silicon source, and a tungsten source in amounts in accordance with the formula together with up to about 2 weight percent NH.sub.4 Cl and up to about 0.2 weight percent NH.sub.4 F to form a relatively uniform admixture; firing the admixture in a closed container under an inert atmosphere to form the phosphor; milling and washing the phosphor in an aqueous citric acid solution; and rinsing the citric acid washed phosphor with ammonium hydroxide. A low pressure mercury arc discharge device including the above-described phosphor is still further disclosed.

    摘要翻译: 具有以下经验式:Zn(2.00-x-y)Mn xSiO(4.00-y)(WO 3)z)的锰活化的原硅酸锌荧光体,其中:0.04≤x≤0.15; 0

    Coated phosphors, method for producing same and articles employing same
    3.
    发明授权
    Coated phosphors, method for producing same and articles employing same 失效
    涂覆荧光体,其制造方法和使用其的制品

    公开(公告)号:US4473634A

    公开(公告)日:1984-09-25

    申请号:US348466

    申请日:1982-02-12

    IPC分类号: C09K11/02 B05D5/06

    CPC分类号: C09K11/025 Y10T428/2993

    摘要: The red and blue color cathode ray tube phosphors for color television are pigmented with a coating of an aqueous-insoluble silicate-based glass matrix containing pigment particles. When incorporated into a tridot color cathode ray tube, the contrast of the tube is improved. The coated particles are formed by dispersing the particles in a slurry with a silicate, the pigment particles and an optional wetting agent, and evaporating the slurry to dryness. The dried coated particles are then heated in order to insolubilize the glass matrix, and soluble ions are then removed by washing.

    摘要翻译: 用于彩色电视机的红色和蓝色彩色阴极射线管荧光体用含有颜料颗粒的水不溶性硅酸盐基玻璃基质的涂层着色。 当结合到三极管彩色阴极射线管中时,管的对比度得到改善。 涂覆的颗粒通过将颗粒分散在具有硅酸盐,颜料颗粒和任选的润湿剂的浆料中而形成,并将浆料蒸发至干。 然后加热干燥的涂覆颗粒以使玻璃基质不溶化,然后通过洗涤除去可溶性离子。

    Method for preparing zinc orthosilicate phosphor particle
    4.
    发明授权
    Method for preparing zinc orthosilicate phosphor particle 失效
    制备原硅酸铅荧光粉颗粒的方法

    公开(公告)号:US5196234A

    公开(公告)日:1993-03-23

    申请号:US917724

    申请日:1992-07-20

    摘要: A method for preparing a specific zinc orthosilicate phosphor particle having a nonparticulate, conformal aluminum oxide coating wherein all of a manganese activator is present as manganese (II) and occupies zinc (II) sites includes the steps of blending a zinc source, a manganese (II) source, a silicon source, and a tungsten source in amounts in accordance with said formula with an amount of up to about 2 weight percent NH.sub.4 Cl and up to about 0.2 weight percent NH.sub.4 F to form a relatively uniform admixture, firing the mixture in a closed container under an inert non-oxidizing atmosphere to promote retention of manganese in the plus two valance state whereby oxidation of manganese to a higher valence state is avoided and conditions promote larger particle size formation; milling and washing the phosphor in an aqueous citric acid solution to remove unreacted manganese; rinsing, drying and sieving the dried phosphor; and depositing a continuous, nonparticulate, conformal aluminum oxide coating on the dried phosphor particle.

    摘要翻译: 一种制备具有非颗粒的保形铝氧化物涂层的特定的原硅酸锌荧光体颗粒的方法,其中所有的锰活化剂以锰(II)存在并占据锌(II)位置包括以下步骤:将锌源,锰( II)源,硅源和钨源,其用量为至多约2重量%NH 4 Cl和最多约0.2重量%NH 4 F的量,以形成相对均匀的混合物,将混合物在 在惰性非氧化气氛下封闭容器,以促进锰处于正二值状态下的保留,从而避免锰氧化成更高价态,并且条件促进更大的粒度形成; 在柠檬酸水溶液中研磨和洗涤磷光体以除去未反应的锰; 冲洗,干燥和筛分干燥的磷光体; 以及在干燥的磷光体颗粒上沉积连续的,无颗粒的,保形的氧化铝涂层。