Abrasive articles including abrasive particulate materials, coated abrasives using the abrasive particulate materials and methods of forming
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorsTracy H. Panzarella, Doruk O. Yener
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Abstract
An abrasive article includes an abrasive particulate material made of alumina crystals and a primary additive composition impregnated within the abrasive particulate material, the primary additive composition including a combination of Mg and Ca, wherein Mg and Ca are present in an additive ratio [Mg:Ca] within a range between about 1:1 and about 10:1, and further comprising at least about 0.2 wt % Ca for the total weight of the abrasive particulate material.
Claims28
An abrasive article comprising:
- an abrasive particulate material comprising alumina crystals and a primary additive composition impregnated within the abrasive particulate material, the primary additive composition comprising a combination of Mg and Ca, wherein Mg and Ca are present in an additive ratio [Mg:Ca] within a range between about 1:1 and about 10:1, and further comprising at least about 0.2 wt % Ca for the total weight of the abrasive particulate material.
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An abrasive article comprising:
- an abrasive particulate material comprising alumina crystals and a primary additive composition comprising a first alkaline earth element and Ca, wherein Ca is present in an amount not greater than the first alkaline earth element, and wherein
- a majority of the primary additive composition is preferentially located at crystal boundaries of the alumina crystals.
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A method of forming an abrasive article comprising:
- forming a porous alumina material;
- and
- impregnating the porous alumina material with a primary additive composition to form an impregnated particulate material, the primary additive composition comprising a combination of Mg and Ca, wherein Mg and Ca are present in an additive ratio [Mg:Ca] within a range between 1:1 and about 10:1.
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Dependencies are inferred from the claim text.