US 9,790,410 B2 · Method of making ceramic shaped abrasive particles, sol-gel composition, and ceramic shaped abrasive particles

Abstract

A method includes: providing a mold having a plurality of mold cavities, wherein each mold cavity is bounded by a plurality of faces joined along common edges; filling at least some of the mold cavities with a sol-gel composition that includes a release agent dispersed therein; at least partially drying the sol-gel composition thereby forming shaped ceramic precursor particles; calcining at least a portion of the shaped ceramic precursor particles to provide calcined shaped ceramic precursor particles; and sintering at least a portion of the calcined shaped ceramic precursor particles to provide ceramic shaped abrasive particles. A sol-gel composition, shaped ceramic precursor particles, and ceramic shaped abrasive particles associated with practice of the method are also disclosed.

Claims6

Dependent claims

A method of making shaped ceramic precursor particles, the method comprising:

providing a mold having a plurality of mold cavities, wherein each mold cavity is bounded by a plurality of faces joined along common edges;
filling at least some of the mold cavities with a sol-gel composition, the sol-gel composition comprising a liquid vehicle and a ceramic precursor comprising an alpha alumina precursor, the liquid vehicle comprising a volatile component and a release agent dispersed throughout the volatile component, wherein the release agent comprises an oil;
and
removing at least a portion of the volatile component from the sol-gel composition while the sol-gel composition resides in the mold cavities thereby providing the shaped ceramic precursor particles.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/127,853Filed 28 Jun 2012 · substitution

Priority

12 Jul 2011

Published

US 2014/0109490 A124 Apr 2014

Granted

17 Oct 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification22 codes

C09K 3/1409
Anti-slip materials; Abrasives: abrasive particles per se
B24D 18/009
Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for: tools not otherwise provided for
B28B 1/004
Producing shaped prefabricated articles from the material: devices for shaping artificial aggregates from ceramic mixtures or from mixtures…
B28B 1/14
Producing shaped prefabricated articles from the material: by simple casting, the material being neither forcibly fed nor positively compacted

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

Life of this patent

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

Life of this patent

Abstract

Claims6