OXYNITRIDE PHOSPHOR POWDER AND METHOD FOR PRODUCING SAME
    11.
    发明申请
    OXYNITRIDE PHOSPHOR POWDER AND METHOD FOR PRODUCING SAME 有权
    氧化磷光体粉末及其制造方法

    公开(公告)号:US20160060516A1

    公开(公告)日:2016-03-03

    申请号:US14781132

    申请日:2014-03-28

    CPC classification number: C09K11/7734 C01B21/06

    Abstract: An oxynitride phosphor powder has a fluorescence peak wavelength of 610 to 625 nm and also has higher external quantum efficiency than the conventional one. The oxynitride phosphor powder includes an α-type SiAlON and aluminum nitride, represented by the compositional formula: Cax1Eux2Si12−(y+z)Al(y+z)OzN16−z wherein x1, x2, y, z fulfill the following formulae: 1.60≦x1+x2≦2.90, 0.18≦x2/x1≦0.70, 4.0≦y≦6.5, 0.0≦z≦1.0. The powder can additionally contain Li in an amount of 50 to 10000 ppm. The content of the aluminum nitride may be more than 0 mass % to less than 33 mass %.

    Abstract translation: 氮氧化物荧光体粉末的荧光峰值波长为610〜625nm,外部量子效率高于常规荧光粉。 氧氮化物荧光体粉末包括由以下组成式表示的α型SiAlON和氮化铝:Cax1Eux2Si12-(y + z)Al(y + z)OzN16-z其中x1,x2,y,z满足下列公式:1.60 ≦̸ x1 + x2≦̸ 2.90,0.18≦̸ x2 / x1≦̸ 0.70,4.0≦̸ y≦̸ 6.5,0.0≦̸ z≦̸ 1.0。 该粉末还可以含有50〜10000ppm的Li。 氮化铝的含量可以大于0质量%至小于33质量%。

    Silicon nitride powder, silicon nitride sintered body and circuit substrate, and production method for said silicon nitride powder

    公开(公告)号:US10399854B2

    公开(公告)日:2019-09-03

    申请号:US15318005

    申请日:2015-06-16

    Abstract: A silicon nitride powder having a specific surface area of 4.0 to 9.0 m2/g, a β phase proportion of less than 40 mass %, and an oxygen content of 0.20 to 0.95 mass %, wherein a frequency distribution curve obtained by measuring a volume-based particle size distribution by a laser diffraction scattering method has two peaks, peak tops of the peaks are present respectively at 0.4 to 0.7 μm and 1.5 to 3.0 μm, a ratio of frequencies of the peak tops ((frequency of the peak top in a particle diameter range of 0.4 to 0.7 μm)/(frequency of the peak top in a particle diameter range of 1.5 to 3.0 μm)) is 0.5 to 1.5, and a ratio D50/DBET (μm/μm) of a median diameter D50 (μm) determined by the measurement of particle size distribution to a specific surface area-equivalent diameter DBET (μm) calculated from the specific surface area is 3.5 or more.

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