METHOD FOR MANUFACTURING SINTERED BODY OF ALUMINA-SPINEL COMPOSITE POWDER
    2.
    发明申请
    METHOD FOR MANUFACTURING SINTERED BODY OF ALUMINA-SPINEL COMPOSITE POWDER 审中-公开
    制造铝 - 弹簧复合粉末烧结体的方法

    公开(公告)号:WO2007120005A1

    公开(公告)日:2007-10-25

    申请号:PCT/KR2007/001866

    申请日:2007-04-17

    CPC classification number: C04B35/44

    Abstract: Provided is a method for manufacturing a sintered body of an alumina- spinel composite powder for bulletproof material, in which alumina (AI2O3) and magnesium oxide (MgO) raw materials are milled into an alumina powder and a spinel composition powder through high-energy milling, and thereafter heat- treating, mixing and sintering are sequentially performed. Since the method employs high-energy milling, it is possible to synthesize spinel phase through heat-treatment at a low temperature for a short duration. Furthermore, the small amount of additive is added during the sintering process so that it is possible to obtain a sintered body of a composite powder with a low density and a high densification degree at a low temperature.

    Abstract translation: 本发明提供一种用于防弹材料的氧化铝 - 尖晶石复合粉末的烧结体的制造方法,其中将氧化铝(Al 2 O 3)和氧化镁(MgO)原料通过高能量研磨粉碎成氧化铝粉末和尖晶石组合物粉末 ,然后依次进行热处理,混合和烧结。 由于该方法采用高能量研磨,所以可以通过在低温下进行短时间的热处理来合成尖晶石相。 此外,在烧结过程中添加少量的添加剂,从而可以在低温下获得密度低,致密化程度高的复合粉末的烧结体。

    Multi-bar linkage, lower-limb exoskeleton robot using the same, and method of controlling the same

    公开(公告)号:US10792811B2

    公开(公告)日:2020-10-06

    申请号:US15824532

    申请日:2017-11-28

    Abstract: A multi-bar linkage includes a driving unit that is configured to supply torque to a driving shaft, where the driving shaft is provided on a first portion of a first link. A driving arm has one end fixed to the driving shaft and an opposite end being movable following rotation of the driving shaft. A first auxiliary link has one end pivotably connected to the opposite end of the driving arm. A second auxiliary link is pivotably connected to a first point of a second portion of the first link and to an opposite end of the first auxiliary link. A second link is disposed below the first link and pivotably connected to the second auxiliary link. A third auxiliary link has one end pivotably connected to a second point of the second portion of the first link, separated from the first point, and an opposite end pivotably connected to the second link.

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