Patent ID: 9669517
Date: 2017-06-06
CPC Classifications: B24D,C04B,C09K

Claim:
1. A high temperature bonded abrasive component, comprising: alumina abrasive grits; and a vitreous bond matrix that bonds alumina abrasive grits to each other and in which the alumina abrasive grits are distributed, the vitreous bond matrix having a cure temperature not less than 1000° C., wherein the alumina abrasive grits comprising polycrystalline alpha alumina having an average domain size of not greater than 300 nm, and wherein the alumina abrasive grits further comprise a pinning agent, the pinning agent comprising a dispersed phase in the polycrystalline alpha alumina, and wherein the alumina abrasive grits have a Crystal Stability of at least 1400° C., where Crystal Stability is the temperature at which the alumina abrasive grits undergo domain growth quantified by an average domain size not greater than 300 nm, after 5 minutes of exposure at said temperature.