Patent ID: 9073179
Filing Date: 2015-07-07
Classification: B01J,B23K,B24D,C04B,C09K

Abstract:
1. A method comprising: providing a layer of ceramic precursor material supported on a carrier, wherein the layer of ceramic precursor material comprises a ceramic precursor and free water, wherein the ceramic precursor comprises an alpha alumina precursor; and cutting through the layer of ceramic precursor material using a laser beam to provide shaped ceramic precursor particles; drying the shaped ceramic precursor particles to provide dried shaped ceramic precursor particles; calcining the dried shaped ceramic precursor particles to provide calcined shaped ceramic precursor particles; impregnating the calcined shaped ceramic precursor particles with an impregnating composition comprising a mixture comprising a second liquid medium and at least one of a metal oxide or precursor thereof to provide impregnated calcined shaped ceramic precursor particles, wherein the impregnating composition impregnates the calcined shaped ceramic precursor particles to a lesser degree on surfaces formed by the cutting of the laser beam than other surfaces of the calcined shaped ceramic precursor particles.