Fixed abrasive articles utilizing coated abrasive particles

Details Fixed abrasive articles utilizing coated abrasive particles Fixed abrasive articles utilizing coated abrasive particles

B - Operations, Transporting

24

D

B24D 3/28 (2006.01) C09K 3/14 (2006.01)

Patent

CA 2719003

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 zir-conium oxide. Also the polycrystalline alpha alumina core includes grains and having an average grain size of not greater than about 500 nm.

Linvention concerne un article abrasif fixe qui inclut un matériau matriciel et des particules abrasives incorporées dans le matériau matriciel. Les particules abrasives possède une structure cur-enveloppe qui inclut un cur dalpha-alumine polycristalline et une couche denveloppe susjacente au cur dalpha-alumine polycristalline. La couche denveloppe inclut une substance choisie dans le groupe constitué par loxyde de silicium et loxyde de zirconium. Egalement, le cur dalumine polycristalline inclut des grains qui ont une taille moyenne de grain non supérieure à environ 500 nm.

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