Forming ferrite film
    2.
    发明公开
    Forming ferrite film 失效
    Bildung eines Ferritfilms。

    公开(公告)号:EP0259194A2

    公开(公告)日:1988-03-09

    申请号:EP87307890.1

    申请日:1987-09-07

    IPC分类号: H01F41/24 H01F10/20

    CPC分类号: H01F41/24 H01F10/20

    摘要: A method of forming a ferrite film on a particulate and/or fibrous substrate, which comprises adding an oxidising agent to a deoxidized solution or dispersion containing ferrous ions and the substrate.

    摘要翻译: 一种在颗粒和/或纤维基材上形成铁氧体膜的方法,其包括将氧化剂加入到含有亚铁离子和底物的脱氧的溶液或分散体中。

    METHOD FOR INCREASING COERCIVE FORCE OF MAGNETS
    3.
    发明公开
    METHOD FOR INCREASING COERCIVE FORCE OF MAGNETS 有权
    增加磁铁磁力的方法

    公开(公告)号:EP3029689A3

    公开(公告)日:2016-08-10

    申请号:EP16157089.0

    申请日:2016-02-24

    IPC分类号: H01F1/055 H01F1/057 H01F41/02

    摘要: The present invention provides a method for improving coercive force of magnets, this method comprises steps as follows: S2) coating step: coating a coating material on the surface of a magnet and drying it; and S3) infiltrating step: heat treating the magnet obtained from the coating step S2). The coating material comprises (1) metal calcium particles and (2) particles of a material containing a rare earth element; the rare earth element is at least one selected from Praseodymium, Neodymium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium and Lutetium. The method of the present invention can significantly increase coercive force of a permanent magnet material, while remanence and magnetic energy product hardly decrease. In addition, the method of the present invention can significantly decrease the amount of a rare earth element, and accordingly, decrease the production cost.

    摘要翻译: 本发明提供了一种提高磁体矫顽力的方法,该方法包括如下步骤:S2)涂布步骤:将涂料涂布在磁体表面并进行干燥; 和S3)渗入步骤:热处理由涂覆步骤S2)获得的磁体。 该涂料包含(1)金属钙颗粒和(2)含有稀土元素的材料颗粒; 稀土元素是选自镨,钕,钆,铽,镝,Hol,铒,Th,镱和L中的至少一种。 本发明的方法可显着提高永磁材料的矫顽力,而剩磁和磁能积几乎不降低。 另外,本发明的方法可以显着减少稀土元素的量,并因此降低生产成本。

    DEVICES AND METHODS FOR ORIENTING PLATELET-SHAPED MAGNETIC OR MAGNETIZABLE PIGMENT PARTICLES
    9.
    发明公开
    DEVICES AND METHODS FOR ORIENTING PLATELET-SHAPED MAGNETIC OR MAGNETIZABLE PIGMENT PARTICLES 审中-公开
    用于定向平板形磁性或可磁化颜料颗粒的装置和方法

    公开(公告)号:EP3224055A1

    公开(公告)日:2017-10-04

    申请号:EP15801723.6

    申请日:2015-11-20

    申请人: Sicpa Holding SA

    发明人: MÜLLER, Edgar

    摘要: The present invention relates to the field of devices and processes for producing optical effect layers (OEL) comprising magnetically bi-axially oriented platelet-shaped magnetic or magnetizable pigment particles, in particular for producing said OELs as anti-counterfeit means on security documents or security articles or for decorative purposes. The process described herein comprises the step of a) applying on a substrate surface a radiation curable coating composition comprising platelet-shaped magnetic or magnetizable pigment particles, b) exposing the radiation curable coating composition to a dynamic magnetic field of a magnetic assembly comprising a Halbach cylinder assembly, and c) at least partially curing the radiation curable coating composition of step b) so as to fix the platelet-shaped magnetic or magnetizable pigment particles in their adopted positions and orientations, said step c) being carried out partially simultaneously or simultaneously with step b).

    摘要翻译: 本发明涉及用于制造光学效应层(OEL)的装置和方法的领域,所述光学效应层(OEL)包括磁性双轴取向的小片状磁性或可磁化颜料颗粒,特别用于制造所述OEL作为防伪文件或安全 物品或用于装饰目的。 本文所述的方法包括以下步骤:a)在基材表面上施涂包含小片状磁性或可磁化颜料颗粒的可辐射固化涂料组合物,b)将可辐射固化涂料组合物暴露于磁性组件的动态磁场,所述磁性组件包含Halbach 以及c)至少部分地固化步骤b)的可辐射固化的涂料组合物,以将所述片状磁性或可磁化颜料颗粒固定在其采用的位置和取向上,所述步骤c)部分同时或同时进行 与步骤b)。

    Method of forming ferrite thin film and ferrite thin film obtained using the same
    10.
    发明公开
    Method of forming ferrite thin film and ferrite thin film obtained using the same 审中-公开
    Verfahren zur Bildung einerFerritdünnschichtund dadurch erhalteneFerritdünnschicht

    公开(公告)号:EP2645383A2

    公开(公告)日:2013-10-02

    申请号:EP13160995.0

    申请日:2013-03-26

    IPC分类号: H01F10/20 H01F41/24

    摘要: [Task] To provide a method of forming a ferrite thin film in which it is possible to manufacture a thick film having a film thickness of 1 µm or more using a sol-gel method without causing cracking.
    [Means for Resolution] A method of forming a ferrite thin film by carrying out a process for forming a coated film by coating a ferrite thin film-forming composition on a heat-resistant substrate and a process for calcining the coated film once or a plurality of times so that the thickness of the calcined film on the substrate becomes a desired thickness, and firing the calcined film formed on the substrate, in which the conditions for firing the calcined film formed on the substrate are under the atmosphere or an oxygen gas or inert gas atmosphere, a temperature-rise rate of 1°C/minute to 50°C/minute, a holding temperature of 500°C to 800°C, and a holding time of 30 minutes to 120 minutes.

    摘要翻译: [任务]提供一种形成铁氧体薄膜的方法,其中可以使用溶胶 - 凝胶法制造膜厚为1μm以上的厚膜而不引起开裂。 [解决方法]通过在耐热基板上涂布铁氧体薄膜形成组合物并进行一次或多次煅烧的方法,通过进行形成涂膜的工艺来形成铁氧体薄膜的方法 的时间,使得基板上的煅烧膜的厚度变为所需的厚度,并且烧结形成在基板上的煅烧膜,其中在基板上形成的煅烧膜的焙烧条件在气氛下或氧气或 惰性气体气氛,升温速度为1℃/分钟至50℃/分钟,保持温度为500℃〜800℃,保持时间为30分钟〜120分钟。