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    Europium-activated alkaline-earth pyrophosphate phosphors
    1.
    发明授权
    Europium-activated alkaline-earth pyrophosphate phosphors 失效
    铕活化碱土磷酸盐磷光体

    公开(公告)号：US3882041A

    公开(公告)日：1975-05-06

    申请号：US40103073

    申请日：1973-09-26

    申请人： RCA CORP

    发明人： ROYCE MARTIN ROBERT

    IPC分类号： C09K11/77 ,  C09K1/36

    CPC分类号： C09K11/7796

    摘要： A phosphor consisting essentially of a pyrophosphate of at least one alkaline-earth element activated with divalent europium and containing, for each mole of phosphor, between 0.00001 and 0.00020 mole, of praseodymium. The phosphor may be used in a cathode-ray tube having a luminescent screen including this phosphor.

    摘要翻译： 基本上由至少一种用二价铕活化的碱土金属元素的焦磷酸盐组成的荧光体，对于每摩尔荧光体，含有0.00001至0.00020摩尔的镨。 荧光体可以用于具有包含该荧光体的荧光屏的阴极射线管。

    Process of preparing porosity-free calcium halophosphate phosphors
    2.
    发明授权
    Process of preparing porosity-free calcium halophosphate phosphors 失效
    制备无孔钙钙磷酸盐磷光体的方法

    公开(公告)号：US3764555A

    公开(公告)日：1973-10-09

    申请号：US3764555D

    申请日：1970-10-15

    申请人： GEN ELECTRIC

    发明人： HICKOK R ,  VINCENT T ,  FRIEDMAN A

    IPC分类号： C09K11/08 ,  C09K1/36

    CPC分类号： C09K11/0861

    摘要： A process for the production of relatively porosity-free calcium halophosphate phosphors activated such as with antimony and manganese. The process involves using either calcium pyrophosphate, Ca2P2O7, or tribasic calcium ortho-phosphate, Ca3(PO4)2, as the phosphate ingredient in a batch of ingredients containing the constituent elements of the desired phosphor. The batch is fired at an elevated temperature for a time sufficient to produce the phosphor. The extent of freedom from porosity of the phosphor can be characterized by the slope of a line obtained by plotting a graph of log I/Io versus mg/mm2 wherein I/Io is the ratio of the intensity of light transmitted in a forward direction through a sample of the phosphor in particulate form suspended in a liquid of essentially matching index of refraction to the intensity of the light transmitted without the phosphor, and mg/mm2 is the concentration of the phosphor measured in milligrams of phosphor per square millimeter of light beam. A slope less negative than -2.7 mm2/mg is within the invention.

    摘要翻译： 用于生产相对无孔隙的磷酸钙磷光体磷光体的方法，其如锑和锰等活化。 该方法包括使用焦磷酸钙，Ca2P2O7或正磷酸三钙，Ca3（PO4）2作为含有所需磷光体的构成元素的成分的一部分磷酸盐成分。 批料在升高的温度下烧制足以产生磷光体的时间。 通过绘制log I / Io与mg / mm 2的曲线图得到的线的斜率，可以表征荧光体的孔隙度的程度，其中I / Io是在向前方向上透射的光的强度之比通过 悬浮在基本上匹配的折射率的液体中的荧光体的样品与没有荧光体的透射光的强度成比例，mg / mm 2是以每平方毫米光束的毫克荧光体测量的荧光体的浓度 。 小于-2.7mm2 / mg的斜率在本发明内。

    Haloapatite phosphors in the form of spherical particles and method of making same
    4.
    发明授权
    Haloapatite phosphors in the form of spherical particles and method of making same 失效
    球形颗粒形式的氢氧化物及其制备方法

    公开(公告)号：US3709826A

    公开(公告)日：1973-01-09

    申请号：US3709826D

    申请日：1970-06-01

    申请人： MALLINCKRODT CHEMICAL WORKS

    发明人： PITT L ,  STARBUCK J

    IPC分类号： C09K11/73 ,  C09K1/36

    CPC分类号： C09K11/73

    摘要： Alkaline earth haloapatite phosphors are provided in the novel form of substantially spherical particles, having diameters between about 1 and 20 microns. Haloapatite phosphor particles having this configuration are prepared by spray drying a semicolloidal suspension of precipitated haloapatite crystallites. Such a suspension is prepared by reacting aqueous solutions containing the constituent ions of an alkaline earth halophosphate. Desirably, the reaction solution is digested at about 60* C. and filtered to remove the precipitate which is then washed and reslurried to provide the suspension which is fed to the spray dryer. Activators such as antimony and manganese are normally incorporated in the phosphor by including ions of such activators in the reactant solutions. Fluorescent properties of the dried spherical phosphor are fully developed by brief thermal refining at about 1,050* to 1,200* C. Spherical phosphor particles are more readily dispersible in the usual coating media than are the irregular phosphor particles known heretofore. Because of their ability to pack together more closely and have a lesser void fraction, spherical phosphors provide fluorescent lamp coating of improved uniformity and greater optical density.

    摘要翻译： 碱性卤代磷灰石荧光体以基本上为球形的颗粒的形式提供，直径在约1至20微米之间。 具有这种结构的卤代磷灰石荧光体颗粒通过喷雾干燥沉淀的卤代磷灰石微晶的半胶体悬浮液来制备。 通过使含有碱土金属卤代磷酸盐的组分离子的水溶液反应来制备这种悬浮液。 理想地，将反应溶液在约60℃下消化并过滤以除去沉淀物，然后将其沉淀，并将其重新混合，得到供入喷雾干燥器的悬浮液。 活性剂如锑和锰通常通过在反应物溶液中包含这种活化剂的离子而掺入磷光体中。 干燥的球形荧光体的荧光特性通过在大约1050°至1200℃的短时间热精炼而完全发展。球形荧光体颗粒在通常的涂布介质中比以前已知的不规则荧光体颗粒更容易分散。 由于球形荧光粉能够更紧密地包装在一起并且具有较小的空隙率，因此提供了改进的均匀性和更大光密度的荧光灯涂层。

    Phosphate glass bodies
    6.
    发明授权
    Phosphate glass bodies 失效
    磷酸盐玻璃体

    公开(公告)号：US3640827A

    公开(公告)日：1972-02-08

    申请号：US3640827D

    申请日：1968-10-09

    申请人： FMC CORP

    发明人： LUTZ CHARLES WILLIAM

    IPC分类号： C03C3/16 ,  C09K1/36 ,  E21B37/00

    CPC分类号： C03C3/16 ,  Y10S507/902 ,  Y10S507/906 ,  Y10S507/927 ,  Y10T428/2982

    摘要： Molded internally stressed bodies of phosphate glass of controlled solubility, such as small spheres of sodium phosphate glass containing one or more multivalent metal oxides and having moderate internal stress.

    摘要翻译： 成型的内部受压体的受控溶解度的磷酸盐玻璃，例如含有一种或多种多价金属氧化物并具有适度内应力的磷酸钠玻璃的小球。