一种乙基硅油基磁性液体及其制备方法

    公开(公告)号:CN101225233B

    公开(公告)日:2011-05-18

    申请号:CN200810026204.7

    申请日:2008-01-31

    Applicant: 中山大学

    Inventor: 沈辉 庄琳 招泳欣

    Abstract: 本发明公开一种乙基硅油基磁性液体的制备方法,其目的在于克服现有技术存在的不足,提供一种磁性能强、分散稳定的乙基硅油基磁性液体及其制备方法。本发明的乙基硅油基磁性液体,其磁性颗粒粒度分布较均匀,不团聚,平均粒径约8-9nm,具有乙基硅油的一系列特殊性能,耐低温,-12℃下静置超过1个月无沉淀物析出且保持流动性,采用振动样品磁强计测定饱和磁化强度,其饱和磁化强度可达20.0emu/g。本发明的制备方法简单,对设备要求较低。

    一种乙基硅油基磁性液体及其制备方法

    公开(公告)号:CN101225233A

    公开(公告)日:2008-07-23

    申请号:CN200810026204.7

    申请日:2008-01-31

    Applicant: 中山大学

    Inventor: 沈辉 庄琳 招泳欣

    Abstract: 本发明公开一种乙基硅油基磁性液体的制备方法,其目的在于克服现有技术存在的不足,提供一种磁性能强、分散稳定的乙基硅油基磁性液体及其制备方法。本发明的乙基硅油基磁性液体,其磁性颗粒粒度分布较均匀,不团聚,平均粒径约8-9nm,具有乙基硅油的一系列特殊性能,耐低温,-12℃下静置超过1个月无沉淀物析出且保持流动性,采用振动样品磁强计测定饱和磁化强度,其饱和磁化强度可达20.0emu/g。本发明的制备方法简单,对设备要求较低。

    Radiation source for generating electromagnetic radiation and method for generating electromagnetic radiation
    4.
    发明申请
    Radiation source for generating electromagnetic radiation and method for generating electromagnetic radiation 审中-公开
    用于产生电磁辐射的辐射源和产生电磁辐射的方法

    公开(公告)号:US20080239262A1

    公开(公告)日:2008-10-02

    申请号:US11730187

    申请日:2007-03-29

    CPC classification number: G03F7/70033 B82Y10/00 H05G2/003 H05G2/005 H05G2/008

    Abstract: A radiation source for generating electromagnetic radiation includes an anode, a cathode, and a discharge space. The anode and the cathode are configured to create a discharge in a substance in the discharge space to form a plasma so as to generate the electromagnetic radiation. The radiation source also includes a fuel supply constructed and arranged to supply at least a component of the substance to a location near the discharge space. The fuel supply is located at a distance from the anode and the cathode. The radiation source also includes a further supply constructed and arranged to create and/or maintain a cooling and/or protective layer on or near the anode and/or cathode.

    Abstract translation: 用于产生电磁辐射的辐射源包括阳极,阴极和放电空间。 阳极和阴极被配置为在放电空间中的物质中产生放电以形成等离子体,以便产生电磁辐射。 辐射源还包括构造和布置为将物质的至少一部分供应到放电空间附近的位置的燃料供应。 燃料供应位于距离阳极和阴极一定距离处。 辐射源还包括构造和布置成在阳极和/或阴极上或附近产生和/或维持冷却和/或保护层的另外的供给源。

    5.
    发明专利
    未知

    公开(公告)号:NL8601414A

    公开(公告)日:1988-01-04

    申请号:NL8601414

    申请日:1986-06-02

    Applicant: PHILIPS NV

    Abstract: The invention relates to an X-ray tube having a rotary anode which is rotatably supported in a vacuum-tight housing by at least one metal-lubricated sliding bearing of which at least the cooperating bearing surfaces consist of a W-alloy and in which the lubricant is Ga or a Ga-alloy. In order to extend the life of the X-ray tube, in particular at operating temperatures of the bearing above 400 DEG C, a mechanically readily machinable W-alloy is used which comprises from 2 to 27% by weight of Re.

    8.
    发明专利
    未知

    公开(公告)号:AT315305B

    公开(公告)日:1974-05-27

    申请号:AT1057571

    申请日:1971-12-09

    Applicant: SIEMENS AG

    Abstract: A rotary anode for an X-ray tube containing an anode plate of difficultly meltable material upon which lies the focal spot path, is characterized by the provision of radial cuts in the plate.

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