Abrasive article and method of forming
AssigneesSaint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
InventorsJi Xiao, Aiyun Luo, Gwenaëlle Ringenbach, Ignazio Gosamo, Lise Lauvergeon
Life of this patent
Estimating the term…
Abstract
An abrasive article can include an abrasive component including a body. The body can include a bond matrix and abrasive particles contained in the bond matrix. In an embodiment, the body can include an interconnected phase extending through at least a portion of the bond matrix. The body can include a discontinuous phase including a plurality of discrete members. At least one of the discrete member can include a macroscopic pore. In another embodiment, the body can include a porosity of at least 15 vol % for a total volume of the body.
Claims20
An abrasive article, comprising an abrasive component comprising a body, wherein the body comprises:
- a bond matrix including a bond material and abrasive particles contained within the bond matrix;
- an interconnected phase extending through at least a portion of the bond matrix, wherein the body comprises at least 15 vol % and at most 70 vol % of the interconnected phase for a total volume of the body;
- and
- a discontinuous phase comprising a plurality of discrete members within the bond matrix, wherein the discrete members are distinct from the interconnected phase, the bond material, and the abrasive particles, wherein each of at least some of the discrete members comprises a macroscopic pore,
- wherein the body comprises a porosity of at least 15 vol % and an average pore size of at least 200 microns and at most 1.5 mm;
- and
- wherein the body comprises at most 10 vol % of pores having an average size of at most 50 microns for a total volume of the body.
An abrasive article, comprising an abrasive component including a body, wherein the body comprises:
- a bond matrix including a bond material including a metal material and abrasive particles contained within the bond matrix;
- an interconnected phase extending through at least a portion of the bond matrix including a different metal material than the bond material;
- and
- a porosity of at least 15 vol % for a total volume of the body,
- wherein the interconnected phase is at least 15 vol % and at most 70 vol % for the total volume of the body;
- and
- wherein at least 90% of the porosity comprises discrete macroscopic pores.
A method of forming an abrasive article, comprising:
- forming a porous green body comprising a mixture including a bond material, an infiltrant material, and abrasive particles, wherein the infiltrant material comprises solid macroscopic particles, hollow macroscopic particles, or a combination thereof, wherein the infiltrant material comprises an average particle size of at least 200 microns,
- wherein the mixture includes at least 8 wt. % and at most 30 wt. % of the infiltrant material for a total weight of the mixture.
Dependencies are inferred from the claim text.