Method of making ceramic shaped abrasive particles, sol-gel composition, and ceramic shaped abrasive particles

A sol-gel composition comprising a liquid vehicle and a ceramic precursor, the liquid vehicle comprising a volatile component and a release agent dispersed throughout the volatile component, wherein the sol-gel composition comprises a sol-gel, wherein the release agent comprises an oil, and wherein the ceramic precursor can be converted to alpha alumina.

Shaped ceramic precursor particles, wherein each shaped ceramic precursor particle comprises a ceramic precursor that can be converted into alpha alumina and is bounded by a surface having a plurality of faces joined along common edges, wherein the surface has voids on at least a portion thereof, wherein the voids are shaped as hollow ellipsoidal sections, wherein the plurality of faces comprises:

• an exposed face having a portion of the voids thereon, wherein the exposed face has a first density of the voids;
• and
• a mold face, wherein the mold face has a portion of the voids thereon, wherein the mold face has a second density of the voids, and wherein the first density of the voids is greater than the second density of the voids.

The shaped ceramic precursor particles of claim 9, wherein the exposed face is opposite the mold face.

Ceramic shaped abrasive particles, wherein each ceramic shaped abrasive particle comprises alpha alumina and is bounded by a surface having a plurality of faces joined along common edges, wherein the surface has voids on at least a portion thereof, wherein the voids are shaped as hollow ellipsoidal sections, wherein the plurality of faces comprises:

• an exposed face having a portion of the voids thereon, wherein the exposed face has a first density of the voids;
• and
• a mold face, wherein the mold face has a portion of the voids thereon, wherein the mold face has a second density of the voids, and wherein the first density of the voids is greater than the second density of the voids.