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US 8,784,521 B2Granted
Bonded abrasive article and method of forming
AssigneesSaint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
InventorsGilles Querel, Sandhya Jayaraman Rukmani, Muthu Jeevanantham, Kelley McNeal, Stephen E. Fox
Life of this patent
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Abstract
An abrasive article includes an abrasive body having abrasive grains within a bond material, the abrasive body further including a spinel material disposed at an interface between the abrasive grains and the bond matrix.
Claims19
An bonded abrasive article comprising:
- an abrasive body including abrasive grains within a bond material comprising an amorphous phase, the abrasive body further including a passivation region comprising a spinel material, wherein the passivation region is within the bond material and surrounds a majority of the abrasive grains, wherein the abrasive grains comprise microcrystalline aluminum oxide and wherein the bond material comprises less than about 50 vol % of a crystalline phase.
An bonded abrasive article comprising:
- an abrasive body including abrasive grains contained within a matrix of bond material comprising an amorphous phase, the abrasive body further including a layer comprising a spinel material overlying an exterior surface of the abrasive grains, wherein the bond material comprises at least about 5.0 mol % magnesium oxide, wherein the abrasive grains comprise microcrystalline aluminum oxide and wherein the bond material comprises less than about 50 vol % of a crystalline phase.
An bonded abrasive article comprising:
- an abrasive body including abrasive grains contained within a matrix of bond material comprising an amorphous phase, the abrasive body further including a layer comprising a spinel material overlying an exterior surface of the abrasive grains, wherein the bond material comprises an amount of magnesium oxide that is at least about 2 times greater than an amount of any other alkaline earth oxide compound, wherein the abrasive grains comprise microcrystalline aluminum oxide and wherein the bond material comprises less than about 50 vol % of a crystalline phase.
Dependencies are inferred from the claim text.