Sol-gel alumina abrasive grain and vitreous bound abrasive product
    2.
    发明专利
    Sol-gel alumina abrasive grain and vitreous bound abrasive product 有权
    SOL-GEL ALUMINA磨料颗粒和VITREOUS BOUND磨料产品

    公开(公告)号:JP2007231287A

    公开(公告)日:2007-09-13

    申请号:JP2007101967

    申请日:2007-04-09

    CPC classification number: C09K3/1436

    Abstract: PROBLEM TO BE SOLVED: To provide sol-gel alumina abrasive grains which reduce the surface areas of the grains and allow the production of vitreous bonded products using low temperature vitreous bond materials without the production of black points, spots as a result of the incomplete combustion of organic components used in the production process.
    SOLUTION: The sol-gel alumina abrasive grains are characterized by coating the alumina abrasive grains with a ceramic oxide and containing alpha alumina crystals having particle diameters of ≤2 μm.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:提供减少晶粒表面积的溶胶 - 凝胶氧化铝磨料颗粒,并允许使用低温玻璃粘结材料生产玻璃态粘结产品而不产生黑点,由于 在生产过程中使用的有机组分的不完全燃烧。 溶胶 - 凝胶氧化铝磨料颗粒的特征在于用陶瓷氧化物涂覆氧化铝磨粒,并含有粒径≤2μm的α氧化铝晶体。 版权所有(C)2007,JPO&INPIT

    FIXED ABRASIVE ARTICLES UTILIZING COATED ABRASIVE PARTICLES
    4.
    发明申请
    FIXED ABRASIVE ARTICLES UTILIZING COATED ABRASIVE PARTICLES 审中-公开
    固化磨料制品使用涂层磨料颗粒

    公开(公告)号:WO2009117512A3

    公开(公告)日:2009-11-12

    申请号:PCT/US2009037555

    申请日:2009-03-18

    CPC classification number: C09K3/1436 B24D11/00 C23C16/401

    Abstract: An fixed abrasive article is provided which includes a matrix material and abrasive particles embedded within the matrix material. The abrasive particles have a core-shell structure that includes a polycrystalline alpha alumina core and a shell layer overlying the polycrystalline alpha alumina core. The shell layer includes a material selected from the group consisting of silicon oxide and zirconium oxide. Also the polycrystalline alpha alumina core includes grains and having an average grain size of not greater than about 500 nm.

    Abstract translation: 提供固定的磨料制品,其包括基质材料和嵌入基体材料内的磨料颗粒。 研磨颗粒具有核 - 壳结构,其包括多晶α氧化铝芯和覆盖多晶α氧化铝芯的壳层。 壳层包括选自氧化硅和氧化锆的材料。 此外,多晶α氧化铝芯包括晶粒并且平均晶粒尺寸不大于约500nm。

    CERAMIC PARTICULATE MATERIAL AND PROCESSES FOR FORMING SAME
    8.
    发明申请
    CERAMIC PARTICULATE MATERIAL AND PROCESSES FOR FORMING SAME 审中-公开
    陶瓷颗粒材料及其形成方法

    公开(公告)号:WO2008089177A3

    公开(公告)日:2009-10-29

    申请号:PCT/US2008051066

    申请日:2008-01-15

    Abstract: Ceramic particulate material includes alumina particles, the particles having a specific surface area (SSA) not less than 15 m2/g and not greater that 75m2/g and a sphericity quantified by at least one of (i) a mean roundness not less than 0.710 as measured by Roundness Correlation Image Analysis, and (ii) a concavity less than 20% wherein concavity is the percent of alumina particles based on a sample of at least 100 particles, which have a concave outer peripheral portion that extends along a distance not less that 10% of d50 bij TEM inspection, the concave outer peripheral portion having a negative radius of curvature as viewed from an interior of the particle. Also claimed is a method for forming said ceramic particulare material comprising a hot isostatic pressing of loose powder in order to effect phase transformation of the loose powder.

    Abstract translation: 陶瓷颗粒材料包括氧化铝颗粒,具有不小于15m 2 / g且不大于75m 2 / g的比表面积(SSA)的颗粒,并且通过以下至少一种量化球形度(i)平均圆度不小于0.710 如通过圆度相关图像分析测量的,以及(ii)小于20%的凹度,其中凹面是基于至少100个颗粒的样品的氧化铝颗粒的百分比,其具有凹入的外周部分,该凹部外周部分沿着不小于 该10%的d 50 bij TEM检查中,凹形外周部分从颗粒内部观察时具有负的曲率半径。 还要求保护的是形成所述陶瓷颗粒材料的方法,其包括松散粉末的热等静压,以便实现松散粉末的相变。

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