An abrasive article can include a body including a bond material, abrasive particles, and a plurality of pores, wherein the bond material can comprise a vitreous material. In one embodiment, an average particle size of the abrasive particles can be between 0.1 microns to 5 microns, and a porosity of the body may be between 40 vol % to 70 vol %, wherein the porosity may define an average pore size (D50) of at least 0.1 microns and not greater than 5 microns.

An abrasive article can include a body including a bond material, abrasive particles, and a plurality of pores, wherein the bond material can comprise a vitreous material. In one embodiment, an average particle size of the abrasive particles can be between 0.1 microns to 5 microns, and a porosity of the body may be between 40 vol % to 70 vol %, wherein the porosity may define an average pore size (D50) of at least 0.1 microns and not greater than 5 microns.

Implementations disclosed herein generally relate to polishing articles and methods for manufacturing polishing articles used in polishing processes. More specifically, implementations disclosed herein relate to porous polishing pads produced by processes that yield improved polishing pad properties and performance, including tunable performance. Additive manufacturing processes, such as three-dimensional printing processes provides the ability to make porous polishing pads with unique properties and attributes.

There is provided a vitrified bond super-abrasive grinding wheel having a super-abrasive grain layer, wherein the super-abrasive grain layer 6 includes a super-abrasive grain 3, a pore 5 and a vitrified bond 2, and in the super-abrasive grain layer 6, an area ratio of a coarse vitrified bond grain having an area of 30 m.sup.2 or larger is 10% or less.

There is provided a vitrified bond super-abrasive grinding wheel having a super-abrasive grain layer, wherein the super-abrasive grain layer 6 includes a super-abrasive grain 3, a pore 5 and a vitrified bond 2, and in the super-abrasive grain layer 6, an area ratio of a coarse vitrified bond grain having an area of 30 m.sup.2 or larger is 10% or less.

A method for manufacturing a porous metal bonded grindstone with which it is possible to arbitrarily adjust a porosity from a low porosity to a high porosity is provided. This method is intended for manufacturing the porous metal bonded grindstone and comprises: a molding step (P1) for obtaining an unfired molded body including abrasive grains, metal powder, and a pore forming material; a solute removing step (P2) for bringing vapor of a solvent having solubility with respect to the pore forming material into contact with the unfired molded body to remove the pore forming material and to obtain an unfired molded body having pores; and a firing step (P3) for firing the unfired molded body having pores.

Abrasive agglomerates can include cubic boron nitride particles and a vitrified binder material. An abrasive article can include the abrasive agglomerates and a vitrified bond material. The bond material can include zircon, crystalline zirconia, lithium-aluminum-silicate, or any combination thereof. In an embodiment, the bond material may include zircon of greater than 0.5 wt % and less than 7.25 wt % for a total weight of the bond material. In another embodiment, the abrasive article may include a permeability of at least 15 Darcy and a modulus of Rupture of at least 14 MPa.

Abrasive agglomerates can include cubic boron nitride particles and a vitrified binder material. An abrasive article can include the abrasive agglomerates and a vitrified bond material. The bond material can include zircon, crystalline zirconia, lithium-aluminum-silicate, or any combination thereof. In an embodiment, the bond material may include zircon of greater than 0.5 wt % and less than 7.25 wt % for a total weight of the bond material. In another embodiment, the abrasive article may include a permeability of at least 15 Darcy and a modulus of Rupture of at least 14 MPa.