Abrasive particles having complex shapes and methods of forming same

• US 9,771,506 B2
• Filed: 01/10/2017
• Issued: 09/26/2017
• Est. Priority Date: 01/10/2012
• Status: Active Grant

• Current Assignee: Saint-Gobain Ceramics & Plastics Incorporated (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Ceramics & Plastics Incorporated (Compagnie De Saint-Gobain)
• Inventors: Yener, Doruk O., Czerepinski, Jennifer H., Iyengar, Sujatha, Kavanaugh, Michael D., Brandes, Alan J., Arcona, Christopher, Bauer, Ralph, Boussant-Roux, Yves, Panzarella, Tracy H.
• Primary Examiner(s): KILIMAN, LESZEK B
• Application Number:
  US15/402,860
• Publication Number:
  US 20170145274A1
• Time in Patent Office: 259 Days
• Field of Search: 428402
• CPC Class Codes: B01J 2/26 on endless conveyor belts
• CPC Class Codes: C01F 7/442 in presence of a calcination additive
• CPC Class Codes: C09K 3/1409 Abrasive particles per se preparation of diamond C01B32/25
• CPC Class Codes: C09K 3/1418 obtained by division of a mass agglomerated by sintering
• CPC Class Codes: C09K 3/1427 obtained by division of a mass agglomerated by melting, at least partially, e.g. with a binder
• CPC Class Codes: Y10T 428/2982 Particulate matter [e.g., sphere, flake, etc.]

Abstract

An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%.

Claims

1. A shaped abrasive grain comprising:

a body having a first end face, a second end face and a K-shaped first side face extending between the first end face and the second end face.

2. The abrasive grain of claim 1, wherein the second end face is flat.

3. The abrasive grain of claim 2, wherein the body comprises a third face extending between the first end face and the second end face, and wherein the third face is flat.

4. The abrasive grain of claim 2, wherein the body comprises a fourth face extending between the first end face and the second end face, and wherein the fourth face is flat.

5. The abrasive grain of claim 2, wherein the body comprises an opening extending into the interior of the body.

6. The abrasive grain of claim 5, wherein the opening extends along a longitudinal axis of the body.

7. The abrasive grain of claim 5, wherein the opening extends along a lateral axis of the body.

8. The abrasive grain of claim 5, wherein the opening extends along a vertical axis of the body.

9. The abrasive grain of claim 5, wherein the opening extends through the entire interior of the body.

10. The abrasive grain of claim 5, wherein the opening has a constant cross-sectional dimension.

11. The abrasive grain of claim 1, wherein the second end face is K shaped.

12. The abrasive grain of claim 11, wherein the body comprises a third face extending between the first end face and the second end face, and wherein the third face is flat.

13. The abrasive grain of claim 11, wherein the body comprises a fourth face extending between the first end face and the second end face, and wherein the fourth face is flat.

14. The abrasive grain of claim 11, wherein the body comprises an opening extending into the interior of the body.

15. The abrasive grain of claim 14, wherein the opening extends along a longitudinal axis of the body.

16. The abrasive grain of claim 14, wherein the opening extends along a lateral axis of the body.

17. The abrasive grain of claim 14, wherein the opening extends along a vertical axis of the body.

18. The abrasive grain of claim 14, wherein the opening extends through the entire interior of the body.

19. The abrasive grain of claim 14, wherein the opening has a constant cross-sectional dimension.

20. The abrasive grain of claim 1, wherein the body comprises an opening extending into the interior of the body, wherein the opening has a square cylinder shape.