Shaped abrasive particles and method of forming same

Patent metadata

Field	Value
Publication number	US-10351745-B2
Application number	US-201815887466-A
Country	US
Kind code	B2
Filing date	Feb 2, 2018
Priority date	Dec 23, 2014
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

An abrasive particle including a shaped abrasive particle including a body having a plurality of abrasive particles bonded to at least one surface of the body of the shaped abrasive particle.

First claim

What is claimed is:

1. An abrasive particle comprising:
a shaped abrasive particle comprising a body comprising a length defined by a longitudinal axis, a width defined by a lateral axis and a height defined by a vertical axis;
wherein the body has a primary aspect ratio of length:width of at least 1.1:1; and
a first side surface having a two-dimensional shape selected from the first group consisting of regular polygons, irregular polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, a shape with linear and curved portions, and a combination thereof;
a second surface having a two-dimensional shape selected from the first group consisting of regular polygons, irregular polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, a shape with linear and curved portions, and a combination thereof; and

a plurality of abrasive particles bonded to the first major surface of the body, and wherein the second surface is essentially free of the plurality of abrasive particles.

2. The abrasive particle of claim 1 , wherein the body has a first end surface, a second end surface and a first side surface extending between the first end surface and the second end surface.

3. The abrasive particle of claim 2 , wherein the first end surface or the second end surface of the body comprises a two-dimensional shape as viewed in a plane defined by a height and a width of the body selected from the first group consisting of regular polygons, irregular polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, a shape with linear and curved portions, and a combination thereof.

4. The abrasive particle of claim 2 , wherein the plurality of abrasive particles is bonded to at least two surfaces of the body.

5. The abrasive particle of claim 1 , wherein a portion of the plurality of abrasive particles is embedded within the first side surface of the body.

6. The abrasive particle of claim 1 , wherein a portion of the plurality of abrasive particles is bonded directly to the first side surface of the body.

7. The abrasive particle of claim 1 , wherein a portion of the abrasive particles of the plurality of abrasive particles are sinter-bonded to the first side surface of the body of the abrasive particle and the plurality of abrasive particles are selected from the group consisting of oxides, carbides, nitrides, borides, oxycarbides, oxynitrides, oxyborides, natural minerals, synthetic materials, carbon-based materials, and a combination thereof.

8. The abrasive particle of claim 2 , wherein the first end surface is angled with respect to the side surface.

9. The abrasive particle of claim 1 , wherein the plurality of abrasive particles comprise a median particle size (D50), and wherein the median particle size (D50) is at least 0.1% and not greater than about 20% of the length of the body, at least 0.1% and not greater than about 20% of the width of the body, and at least 0.1% and not greater than about 20% of the height of the body.

10. The abrasive particle of claim 1 , wherein the plurality of abrasive particles comprise a median particle size (D50) of at 0.1 microns and not greater than 80 microns.

11. The abrasive particle of claim 1 , wherein the plurality of abrasive particles cover not greater than 95% of a total surface area of the body.

12. The abrasive particle of claim 1 , wherein the abrasive particle is incorporated into a fixed abrasive article.

13. The abrasive particle of claim 1 , wherein the abrasive particle comprises alpha alumina.

14. The abrasive particle of claim 1 , wherein the abrasive particle is extruded.

15. An abrasive particle comprising:
an extruded, elongated body including a first end surface, a second end surface, and a side surface extending between the first end surface and the second end surface;
a plurality of abrasive particles coupled to at least one surface of the body; and
wherein the plurality of abrasive particles is bonded to at least a portion of the side surface and at least the first end surface or second end surface is essentially free of the plurality of abrasive particles.

16. The abrasive particle of claim 15 , wherein the first end surface or the second end surface of the body comprises a two-dimensional shape as viewed in a plane defined by a height and a width of the body selected from the first group consisting of regular polygons, irregular polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, a shape with linear and curved portions, or a combination thereof.

17. The abrasive particle of claim 15 , wherein the body comprises a material selected from the group consisting of oxides, carbides, nitrides, borides, oxycarbides, oxynitrides, oxyborides, natural minerals, synthetic materials, carbon-based materials, or a combination thereof, and wherein the plurality of abrasive particles comprise a material selected from the group consisting of oxides, carbides, nitrides, borides, oxycarbides, oxynitrides, oxyborides, natural minerals, synthetic materials, carbon-based materials, or a combination thereof.

Assignees

• Saint Gobain Ceramics

Inventors

• Josseaux Frederic
• Louapre David F

Classifications

• B01J2/20

  by expressing the material, e.g. through sieves and fragmenting the extruded length · CPC title

• C09K3/1409 Primary

  Abrasive particles per se (preparation of diamond C01B32/25) · CPC title

• B01J2/26

  on endless conveyor belts · CPC title