B - Operations – Transporting – 24 – D
Patent
B - Operations, Transporting
24
D
B24D 3/16 (2006.01) B24D 3/34 (2006.01) B24D 18/00 (2006.01) C04B 35/117 (2006.01) C04B 35/119 (2006.01) C09K 3/14 (2006.01)
Patent
CA 2672139
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
Un abrasif lié à haute température comprend des particules abrasives d'alumine et une matrice de liaison vitreuse dans laquelle sont réparties les particules abrasives d'alumine, la matrice de liaison vitreuse ayant une température de durcissement qui n'est pas inférieure à 1000°C. Les particules abrasives d'alumine comprennent de l'alumine alpha polycristalline ayant une microstructure cristalline fine caractérisée par une taille de domaine moyenne de l'alumine alpha ne dépassant pas 500 nm, lesdites particules abrasives d'alumine renfermant en outre un agent de piégeage qui est une phase dispersée dans l'alumine alpha polycristalline.
Bauer Ralph
Skowron Margaret L.
Gowling Lafleur Henderson Llp
Saint-Gobain Ceramics & Plastics Inc.
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