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    • 3. 发明申请
    • BALL MILLING APPARATUS AND METHOD, AND PRODUCTION OF METALLIC AMORPHOUS MATERIALS
    • 球磨机和方法,以及生产金属非晶材料
    • WO1991004810A1
    • 1991-04-18
    • PCT/AU1990000471
    • 1990-10-03
    • THE AUSTRALIAN NATIONAL UNIVERSITYNINHAM, Barry, WilliamCALKA, Andrzej
    • THE AUSTRALIAN NATIONAL UNIVERSITY
    • B22F09/04
    • H01F1/15316B02C17/005B02C17/04B22F9/005B22F9/04B22F2009/041H01F1/1535
    • A ball mill for use in mechanical alloying and grinding comprising a plurality of ferromagnetic balls (22) within a spherical or generally cylindrical chamber or cell (20) of a paramagnetic material. The cell has a substantially horizontal axis of rotation (21). At least one magnet (24) is mounted outside the chamber to produce a magnetic field within the chamber. The or each magnet is moveable between a plurality of locations on an arc (25) centred on the axis of rotation of the chamber. In mechanical alloying with a ball mill, the addition of a surfactant to the powder charge within the ball mill modifies the rate and nature of the reaction(s) within the mill. The surfactant should be added in a quantity sufficient to produce a monomolecular layer over the surface of the particles comprising the powder charge, and with an organic solvent, such as hexane. Metallic amorphous materials can be produced using the ball mill of the invention by (a) obtaining amorphous ribbons from a master alloy of the required chemical composition, (b) crystallising the ribbons by annealing at a temperature of about 600 DEG C, then (c) milling the crystallised ribbons in a slight overpressure of dry helium to produce a fully amorphous material.
    • 一种用于机械合金和研磨的球磨机,包括在顺磁材料的球形或大致圆柱形的腔室或电池(20)内的多个铁磁球(22)。 电池具有大致水平的旋转轴线(21)。 至少一个磁体(24)安装在腔室外部,以在室内产生磁场。 该磁体或每个磁体可以在以腔室旋转轴线为中心的圆弧(25)上的多个位置之间移动。 在与球磨机的机械合金化中,在球磨机内向粉末装料中加入表面活性剂改变了研磨机内的反应速度和性质。 该表面活性剂的添加量必须足以在包含粉末电荷的颗粒的表面上产生单分子层,并加入有机溶剂如己烷。 使用本发明的球磨机可以通过(a)从所需化学组成的母合金获得无定形带,(b)通过在约600℃的温度下退火使结晶结晶,然后(c )在干氦的轻微超压下研磨结晶的带,以产生完全无定形的材料。