发明授权
US4938890A Method of making YTaO.sub.4 :Nb phosphor with improved brightness using
lithium chloride-lithium sulfate eutectic flux
失效
制备YTaO4的方法:使用氯化锂 - 硫酸锂共晶助熔剂改善亮度的Nb荧光粉
- 专利标题: Method of making YTaO.sub.4 :Nb phosphor with improved brightness using lithium chloride-lithium sulfate eutectic flux
- 专利标题(中): 制备YTaO4的方法:使用氯化锂 - 硫酸锂共晶助熔剂改善亮度的Nb荧光粉
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申请号: US481550申请日: 1990-02-20
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公开(公告)号: US4938890A公开(公告)日: 1990-07-03
- 发明人: Vaddi B. Reddy
- 申请人: Vaddi B. Reddy
- 申请人地址: CT Stamford
- 专利权人: GTE Products Corporation
- 当前专利权人: GTE Products Corporation
- 当前专利权人地址: CT Stamford
- 主分类号: C09K11/77
- IPC分类号: C09K11/77 ; C09K11/78
摘要:
A method of making a niobium activated yttrium tantalate x-ray phosphor using a lithium chloride-lithium sulfate eutectic flux is disclosed. The mole ratio of the flux is 46.5 mole percent lithium chloride to 53.5 mole percent lithium sulfate. Use of this flux improves phosphor brightness by up to 18%, reducing the x-ray dosage to the patient.