Vitrious bonded abbrasive
AssigneesSaint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
InventorsRamanujam Vedantham, Rachana Upadhyay, Gilles Querel
Life of this patent
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Abstract
A vitrified superabrasive product includes a superabrasive component and a vitrified bond component in which the superabrasive component is dispersed. The vitrified bond includes an oxide of a lanthanoid. Additionally, the vitrified bond component defines pores that can be essentially all less than 800 μm in diameter. Seventy percent of the pores are in a range of between about 40 μm and about 500 μm and have an average aspect ratio less than about 2. The porosity is in a range of between about 50% and about 90% of the total volume of the superabrasive product.
Claims18
A grinding tool, comprising:
- a) a base;
- and
- b) a vitrified superabrasive component at a surface of the base, the vitrified superabrasive component including:
- i) a superabrasive component;
- and
- ii) a vitrified bond component in which the superabrasive component is dispersed, the vitrified bond component including an oxide of a lanthanoid comprising cerium oxide, wherein the vitrified bond component defines pores occupying greater than about fifty percent of the total volume of the vitrified superabrasive component, wherein the oxide of the lanthanoid is present in an amount in a range of between about 0.1 volume percent and about 10 volume percent of the vitrified superabrasive product.
A method of forming a vitrified superabrasive product, comprising:
- a) forming a green body that includes a glass powder, a superabrasive grit, a binder, silicon carbide, and an oxide of a lanthanoid comprising cerium oxide, wherein the oxide of the lanthanoid comprises an average particle size within a range between about 0.1 microns and about 30 microns;
- and
- b) firing the green body under an atmosphere and pressure, and at a temperature, sufficient to form a porous vitrified superabrasive product.
Dependencies are inferred from the claim text.