Continuous preparation of silicon nitride powder
    31.
    发明授权
    Continuous preparation of silicon nitride powder 失效
    连续制备氮化硅粉末

    公开(公告)号:US5817285A

    公开(公告)日:1998-10-06

    申请号:US759378

    申请日:1996-12-04

    IPC分类号: C01B21/068

    CPC分类号: C01B21/0682

    摘要: Silicon nitride powder is continuously prepared by feeding metallic silicon powder into a fluidized bed comprising silicon nitride powder and nitrogen or ammonia gas and discharging a nitrided product from the fluidized bed. The metallic silicon powder is pretreated at a temperature of 1,000.degree.-1,400.degree. C. under a vacuum of 0.001-100 Torr before it is subject to nitriding reaction.

    摘要翻译: 通过将金属硅粉末进料到包含氮化硅粉末和氮气或氨气的流化床中并从流化床排出氮化产物来连续制备氮化硅粉末。 金属硅粉末在氮化反应之前,在1000-100乇的真空下,在1000°-1,400℃的温度下进行预处理。

    Preparation of high alpha-type silicon nitride powder
    32.
    发明授权
    Preparation of high alpha-type silicon nitride powder 失效
    制备高α型氮化硅粉末

    公开(公告)号:US5456896A

    公开(公告)日:1995-10-10

    申请号:US273829

    申请日:1994-07-12

    IPC分类号: C01B21/068

    CPC分类号: C01B21/0682

    摘要: Silicon nitride powder is prepared by nitriding metallic silicon powder in a nitriding gas atmosphere at a temperature of 1,000.degree. C.-1,500.degree. C. Midway the nitriding step, the nitrided product is heat treated in an inert non-oxidizing gas atmosphere or vacuum at a temperature higher than the nitriding temperature, but lower than 1,600.degree. C. The product is nitrided again, obtaining high .alpha.-content silicon nitride powder.

    摘要翻译: 氮化硅粉末通过在氮化气体气氛中在1000℃-1,500℃的温度下氮化金属硅粉末制备。在氮化步骤的中途,氮化产物在惰性非氧化性气体气氛或真空中进行热处理 温度高于氮化温度,但低于1600℃。产物再次氮化,获得高含量的氮化硅粉末。

    Two-level display device with hatching control means
    33.
    发明授权
    Two-level display device with hatching control means 失效
    具有孵化控制装置的二级显示装置

    公开(公告)号:US5059963A

    公开(公告)日:1991-10-22

    申请号:US239435

    申请日:1988-09-01

    申请人: Hirofumi Fukuoka

    发明人: Hirofumi Fukuoka

    IPC分类号: G09G3/36 H04N3/12

    CPC分类号: G09G3/3607 H04N3/12 H04N3/127

    摘要: A display device of a type for displaying in two levels is so controlled as to display images of different colors by hatching according to different patterns such that images of different colors can be distinguished. In order to prevent distortion of image caused by hatching, hatching corresponding to any particular color can be selectively prevented. With a binary conversion circuit with adjustable reference voltages, an image with various combinations of analog color signals can also be displayed.

    摘要翻译: 通过这样控制用于显示在两个级别中的显示装置,以根据不同的图案通过阴影显示不同颜色的图像,使得可以区分不同颜色的图像。 为了防止由阴影引起的图像变形,可以选择性地防止对应于任何特定颜色的阴影。 使用具有可调参考电压的二进制转换电路,也可以显示具有模拟彩色信号的各种组合的图像。

    Method for producing silicon oxide powder
    34.
    发明授权
    Method for producing silicon oxide powder 有权
    氧化硅粉末的制造方法

    公开(公告)号:US07794681B2

    公开(公告)日:2010-09-14

    申请号:US11790031

    申请日:2007-04-23

    CPC分类号: C01B33/113 C01B33/182

    摘要: An efficient method for producing a silicon oxide powder at a low cost is provided. This method comprises the steps of heating a powder mixture of a silicon dioxide powder and a metal silicon powder to a temperature of 1,100 to 1,450° C. in an inert gas or under reduced pressure to generate silicon monoxide gas, and precipitating the silicon monoxide gas on a surface of a substrate to produce the silicon oxide powder, and in this method, the silicon dioxide powder has an average particle diameter of up to 1 μm, and the metal silicon powder has an average particle diameter of 30 μm.

    摘要翻译: 提供了一种以低成本生产氧化硅粉末的有效方法。 该方法包括以惰性气体或减压的方式将二氧化硅粉末和金属硅粉末的粉末混合物加热至1100〜1450℃的温度,生成一氧化硅气体,使一氧化硅气体 在基板的表面上形成氧化硅粉末,在该方法中,二氧化硅粉末的平均粒径为1μm以下,金属硅粉的平均粒径为30μm。

    Apparatus for the continuous production of silicon oxide powder
    36.
    发明授权
    Apparatus for the continuous production of silicon oxide powder 有权
    用于连续生产氧化硅粉末的设备

    公开(公告)号:US07431899B2

    公开(公告)日:2008-10-07

    申请号:US10784259

    申请日:2004-02-24

    IPC分类号: C01B33/20

    摘要: A silicon oxide powder can be continuously prepared by feeding a raw material powder mixture containing silicon dioxide powder into a reaction chamber (2) at a temperature of 1,100-1,600° C., to produce a silicon oxide gas, transferring the silicon oxide gas to a deposition chamber (11) through a transfer conduit (10) maintained at a temperature of from higher than 1,000° C. to 1,300° C., causing silicon oxide to deposit on a substrate (13) which is disposed and cooled in the deposition chamber, scraping the silicon oxide deposit, and recovering the deposit in a recovery chamber (18). The method and apparatus is capable of continuous and stable production of amorphous silicon oxide powder of high purity.

    摘要翻译: 可以通过在1100〜1600℃的温度下将含有二氧化硅粉末的原料粉末混合物进料到反应室(2)中来连续制备氧化硅粉末,以产生氧化硅气体,将氧化硅气体转移到 沉积室(11),其通过保持在高于1,000℃至1300℃的温度的转移管道(10),使得氧化硅沉积在沉积物中的基底(13)上,所述基底(13)在沉积物中被设置和冷却 刮擦氧化硅沉积物,并将沉积物回收到回收室(18)中。 该方法和装置能够连续且稳定地生产高纯度的无定形氧化硅粉末。

    Method for producing silicon oxide powder
    38.
    发明申请
    Method for producing silicon oxide powder 有权
    氧化硅粉末的制造方法

    公开(公告)号:US20070248525A1

    公开(公告)日:2007-10-25

    申请号:US11790031

    申请日:2007-04-23

    IPC分类号: C01B33/12

    CPC分类号: C01B33/113 C01B33/182

    摘要: An efficient method for producing a silicon oxide powder at a low cost is provided. This method comprises the steps of heating a powder mixture of a silicon dioxide powder and a metal silicon powder to a temperature of 1,100 to 1,450° C. in an inert gas or under reduced pressure to generate silicon monoxide gas, and precipitating the silicon monoxide gas on a surface of a substrate to produce the silicon oxide powder, and in this method, the silicon dioxide powder has an average particle diameter of up to 1 μm, and the metal silicon powder has an average particle diameter of 30 μm.

    摘要翻译: 提供了一种以低成本生产氧化硅粉末的有效方法。 该方法包括以惰性气体或减压的方式将二氧化硅粉末和金属硅粉末的粉末混合物加热至1100〜1450℃的温度,生成一氧化硅气体,使一氧化硅气体 在基板的表面上形成氧化硅粉末,在该方法中,二氧化硅粉末的平均粒径达到1μm,金属硅粉的平均粒径为30μm。

    Preparation of fine &bgr;-silicon carbide powder
    39.
    发明授权
    Preparation of fine &bgr;-silicon carbide powder 失效
    精细β-碳化硅粉末的制备

    公开(公告)号:US06730283B2

    公开(公告)日:2004-05-04

    申请号:US10096849

    申请日:2002-03-14

    IPC分类号: C01B3136

    摘要: A fine &bgr;-silicon carbide powder is prepared by impregnating graphite with an organosilicon compound selected from crosslinkable silanes and siloxanes, causing the organosilicon compound to crosslink within the graphite, and heating at 1,300° C. or higher in an inert gas stream for reaction. Using only low-temperature heat treatment in air and high-temperature heat treatment in inert gas, the invention enables industrial, economical manufacture of fine silicon carbide powder in a stable manner.

    摘要翻译: 通过用选自可交联硅烷和硅氧烷的有机硅化合物浸渍石墨,使有机硅化合物在石墨内交联并在惰性气流中加热至1300℃以上进行反应来制备精细的β-碳化硅粉末。 在惰性气体中仅使用空气中的低温热处理和高温热处理,本发明能够以稳定的方式工业化,经济地制造细小的碳化硅粉末。