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    Method of maintaining particle size
    112.
    发明申请
    Method of maintaining particle size 有权

    公开(公告)号：US20060246370A1

    公开(公告)日：2006-11-02

    申请号：US11374633

    申请日：2006-03-13

    Applicant: J. Liu

    Inventor： J. Liu

    IPC: G03G5/00

    CPC classification number: B22F1/0085 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C2202/02 ,  B22F1/007 ,  B22F2201/01 ,  B22F2201/10 ,  B22F2201/02 ,  B22F2202/17

    Abstract: The present invention includes particle compositions and methods of fabrication that prevent agglomeration, thereby maintaining particle size and/or shape. Particles of the present invention were prepared after embedding chemically disordered metal-containing particles in at least one salt to form a dispersion. The dispersion of particles in salt was treated to temperatures of at least about 500 degrees Centigrade for several hours. Particles were easily recovered from the dispersion and did not agglomerate. The particles were also absent contaminating salts after performing simple washing and/or rinsing steps. Structural, compositional and/or magnetic characterizations of the metal-containing particles confirmed that they had not agglomerated. When particles with an fcc structure formed a dispersion with at least one salt, the method yielded the formation of particles having an fct structure with high magnetic anisotropy and without a substantial change in size and/or shape. When desired, however, particles shape and/or size may be changed.

    Method for producing angular, stainless shot-blasting abrasives based on an fe-cr-c alloy
    113.
    发明授权
    Method for producing angular, stainless shot-blasting abrasives based on an fe-cr-c alloy 有权
    基于Fe-Cr-C合金制造角型，不锈钢喷砂磨料的方法

    公开(公告)号：US06764557B2

    公开(公告)日：2004-07-20

    申请号：US10181825

    申请日：2002-11-05

    Applicant: Reinhard Sänger ,  Oliver Zyto

    Inventor： Reinhard Sänger ,  Oliver Zyto

    IPC: C21C108

    CPC classification number: C22C38/36 ,  B22F1/0085 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C21D1/76 ,  C21D6/002 ,  C21D9/0068 ,  C22C33/0285 ,  B24C11/00 ,  B22F9/08 ,  B22F9/04 ,  B22F2201/01

    Abstract: The invention relates to a process for producing a corrosion-resistant blasting agent (>60 HRC) with sharp edges based on an Fe—Cr—C alloy. A granulate consisting of an iron-chromium-carbon alloy is hardened in said process to >60 HRC by subjecting it to a heat treatment at above 900° Celsius under a reducing atmosphere. An oxide-free, hard material is obtained in this way that can be crushed into grains with sharp edges. The result is a blasting agent with excellent properties for the surface treatment of workpieces consisting of corrosion-resistant materials such as, for example stainless steel, nonferrous metals and natural stone.

    Abstract translation: 本发明涉及一种基于Fe-Cr-C合金制造具有锋利边缘的耐腐蚀爆破剂（> 60HRC）的方法。 由铁 - 铬 - 碳合金组成的颗粒在所述工艺中硬化至> 60HRC，通过在还原气氛下在900℃以上进行热处理。 以这种方式获得无氧化物的硬质材料，其可以被粉碎成具有锋利边缘的晶粒。 其结果是对由耐腐蚀材料（例如不锈钢，有色金属和天然石材）组成的工件进行表面处理具有优异性能的爆破剂。

    Textured particles
    118.
    发明授权
    Textured particles 有权

    公开(公告)号：US11938535B2

    公开(公告)日：2024-03-26

    申请号：US17527064

    申请日：2021-11-15

    Applicant: Iowa State University Research Foundation, Inc.

    Inventor： Martin Thuo ,  Boyce S. Chang ,  Andrew Martin ,  Winnie M. Kiarie

    IPC: B22F1/065 ,  B22F1/16

    CPC classification number: B22F1/065 ,  B22F1/16 ,  B22F2201/01 ,  B22F2301/20

    Abstract: Textured particles and methods of making the same. A textured particle includes an inner core and a spherical solid outer shell including an outer surface. The inner core is inside the outer shell. The outer surface includes a first tier texture including a first metal, wherein the first metal is greater than 50 atomic % of a total atomic content of all metals in the first tier texture; a second tier texture including the second metal, wherein the second metal is greater than 50 atomic % of a total atomic content of all metals in the second tier texture; and a third tier texture including the third metal, wherein the third metal is greater than 50 atomic % of a total atomic content of all metals in the third tier texture. The first metal, second metal, and third metals are different metals.

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