Abrasive particles having complex shapes and methods of forming same
First Claim
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1. A shaped abrasive particle comprising:
- a body having a length (l), a width (w), and a height (h), wherein the body comprises a three-pointed star having a first arm, a second arm, and a third arm extending from a central portion, and wherein the first arm, second arm and third arm define a total angle of less than about 180 degrees; and
wherein the body comprises a curling factor of not greater than about 10, wherein the curling factor is defined as a ratio between the greatest height of the body at one tip of an arm (ht) as compared to a smallest dimension of height of the body at the interior (hi).
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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%.
441 Citations
20 Claims
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1. A shaped abrasive particle comprising:
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a body having a length (l), a width (w), and a height (h), wherein the body comprises a three-pointed star having a first arm, a second arm, and a third arm extending from a central portion, and wherein the first arm, second arm and third arm define a total angle of less than about 180 degrees; and wherein the body comprises a curling factor of not greater than about 10, wherein the curling factor is defined as a ratio between the greatest height of the body at one tip of an arm (ht) as compared to a smallest dimension of height of the body at the interior (hi). - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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2. A shaped abrasive particle comprising:
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a body having a length (l), a width (w), and a height (h), wherein the body comprises a four-pointed star having a first arm, second arm, third arm, and fourth arm extending from a central portion; and wherein the body comprises a curling factor of not greater than about 10, wherein the curling factor is defined as a ratio between the greatest height of the body at one tip of an arm (ht) as compared to a smallest dimension of height of the body at the interior (hi). - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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12. An abrasive grain, comprising:
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a body having a central portion; and at least three radial arms extending outwardly from the central portion along the entire length of the central portion, wherein each radial arm includes an arrow shaped distal end.
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Specification