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。