Высокотемпературный абразив со связкой (варианты) и способ его формирования

    公开(公告)号:UA92690C2

    公开(公告)日:2010-11-25

    申请号:UAA200906857

    申请日:2007-12-12

    Abstract: Высокотемпературныйабразивсосвязкойсодержитабразивныезернаоксидаалюминияи стекловиднуюсвязывающуюматрицу, вкоторойраспределеныабразивныезернаоксидаалюминия, причемстекловиднаясвязующаяматрицаимееттемпературуотверждениянеменее 1000 °С. Абразивныезернаоксидаалюминиясодержатполикристаллическийальфа-оксидалюминия, имеющийтонкуюкристаллическуюмикроструктуру, котораяхарактеризуетсясреднимразмеромдоменовальфа-оксидаалюминиянеболее 500 нм, иабразивныезернаоксидаалюминия, крометого, содержатагент, создающийцентрыпиннинга, которыйявляетсяфазой, диспергированнойв поликристаллическомальфа-оксидеалюминия.

    Flame retardant composites
    57.
    发明专利

    公开(公告)号:AU2005301161B2

    公开(公告)日:2008-08-07

    申请号:AU2005301161

    申请日:2005-10-17

    Abstract: A flame retardant polymer composite is disclosed. The composite includes a polymer base material and a flame retardant filler provided in the polymer base material, the flame retardant filler containing seeded boehmite particulate material having an aspect ratio of not less than 3:1.

    CERAMIC PARTICULATE MATERIAL AND PROCESSES FOR FORMING SAME

    公开(公告)号:CA2673769A1

    公开(公告)日:2008-07-24

    申请号:CA2673769

    申请日:2008-01-15

    Abstract: Ceramic particulate material includes alumina particles, the particles ha ving a specific surface area (SSA) not less than 15 m2/g and not greater tha n 75 m2/g and a sphericity quantified by at least one of (i) a means roundne ss 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 alum ina particles based on a sample of at least 100 particles, which have a conc ve outer peripheral portion that extends along a distance not less than 10% of d50by TEM inspection, the concave outer peripheral portion having a negat ive radius of curvature as viewed from an interior of the particle.

    Ceramic particulate material and processes for forming same

    公开(公告)号:AU2008206388A1

    公开(公告)日:2008-07-24

    申请号:AU2008206388

    申请日:2008-01-15

    Abstract: Processes for forming ceramic particulate material. The ceramic particulate material includes alumina particles, the particles having a specific surface area (SSA) not less than 15 m2/g and not greater than 75 m2/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 than 10% of d50 by TEM inspection, the concave outer peripheral portion having a negative radius of curvature as viewed from an interior of the particle.

    Submicron alpha alumina high temperature bonded abrasives

    公开(公告)号:AU2007337145A1

    公开(公告)日:2008-07-03

    申请号:AU2007337145

    申请日:2007-12-12

    Abstract: A high temperature bonded abrasive includes alumina abrasive grits, and a vitreous bond matrix in which the alumina abrasive grits are distributed, the vitreous bond matrix having a cure temperature not less than 1000° C. The alumina abrasive grits include polycrystalline alpha alumina having a fine crystalline microstructure characterized by an alpha alumina average domain size not greater than 500 nm, and the alumina abrasive grits further include a pinning agent that is a dispersed phase in the polycrystalline alpha alumina.

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