CRUCIBLE PROTECTION SHEET AND CRUCIBLE APPARATUS USING THE CRUCIBLE PROTECTION SHEET
    44.
    发明申请
    CRUCIBLE PROTECTION SHEET AND CRUCIBLE APPARATUS USING THE CRUCIBLE PROTECTION SHEET 有权
    使用防腐片保护片和可疑装置

    公开(公告)号:US20090308307A1

    公开(公告)日:2009-12-17

    申请号:US12373182

    申请日:2007-07-09

    IPC分类号: C30B15/12 B32B9/00

    摘要: A crucible protection sheet is provided that can prevent damages to an inner crucible, hinder an outer crucible from silicon-carbidization, and transmit heat from the outer crucible to the inner crucible uniformly.In a crucible having an inner crucible 2 and an outer crucible 3, the crucible protection sheet is arranged between the two crucibles and is made of expanded graphite. The planar thermal conductivity is 120 W/(m·K) or higher, the gas permeability is less than 1.0×10−4 cm2/s, and the compression ratio is 20% or higher when the sheet is compressed in a thickness direction at a pressure of 34.3 MPa. Since the compression ratio is high, the effect of preventing breakage is great when inserting the inner crucible, improving workability and preventing the inner crucible from tilting inside the outer crucible. In addition, even though the compression ratio is high, the thermal conductivity is kept to such a degree that the inner crucible can be heated uniformly, and the gas shielding capability is also ensured. As a result, the outer crucible is prevented from silicon-carbidization and thickness decrease.

    摘要翻译: 提供了可以防止内坩埚损坏的坩埚保护片,阻止外坩埚从硅碳化,并将热量从外坩埚均匀地传递到内坩埚。 在具有内坩埚2和外坩埚3的坩埚中,坩埚保护片布置在两个坩埚之间并且由膨胀石墨制成。 平面导热率为120W /(mK)以上,气体透过率小于1.0×10 -4 cm 2 / s,压缩比为20%以上时,在厚度方向压缩片材的压力为 34.3MPa。 由于压缩比高,所以在插入内坩埚时,防止破损的效果大,提高加工性,防止内坩埚在外坩埚内部倾斜。 此外,即使压缩比高,导热率也保持在内坩埚能均匀加热的程度,并且也保证了气体屏蔽能力。 结果,防止了外坩埚的硅 - 碳化和厚度的减小。

    Gas sensors and their manufacturing methods
    50.
    发明授权
    Gas sensors and their manufacturing methods 失效
    气体传感器及其制造方法

    公开(公告)号:US5618496A

    公开(公告)日:1997-04-08

    申请号:US406097

    申请日:1995-03-16

    IPC分类号: G01N27/00 G01N27/12

    CPC分类号: G01N27/12

    摘要: P-type semiconductor 15 and n-type semiconductor 16 are formed as thick films or spray-coated onto electrodes 13 and 14 on top of substrates 11 and 12, with films of p-type semiconductor 15 and n-type semiconductor 16 being formed in such manner that they are in mutual contact. If a gas to be detected is introduced to the contact region while a bias voltage is being applied between the two electrodes, an output will be obtained in accordance with the concentration of flammable gas components in the gas being detected. In addition, if a film is formed from a material comprising a mixture of particles of p-type semiconductor and particles of n-type semiconductor, the bias voltage can be an AC voltage.

    摘要翻译: P型半导体15和n型半导体16形成为厚膜或喷涂在基板11和12的顶部上的电极13和14上,其中p型半导体15和n型半导体16的膜形成在 使他们相互接触。 如果在两个电极之间施加偏置电压时将要检测的气体引入接触区域,则将根据被检测气体中的可燃气体成分的浓度获得输出。 此外,如果由包含p型半导体颗粒和n型半导体颗粒的混合物的材料形成膜,偏压可以是AC电压。