Shaped abrasive particle including dopant material and method of forming same
First Claim
Patent Images
1. A particulate material comprising:
- a shaped abrasive particle having a body comprising a length, a width, and a thickness, wherein the body comprises a central region including the geometric center of the body having a first dopant material present in a center dopant amount (DCc), the body further comprising an upper surface defined by the dimensions of length and width, the upper surface having a second dopant material present in an upper surface dopant amount (DUSc), wherein the body comprises a dopant amount difference (Δ
Dc) between the center dopant amount and the upper surface dopant amount, and wherein the dopant amount difference (Δ
Dc) is at least about 0.2 wt % and not greater than about 30 wt %.
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Abstract
A method of forming a shaped abrasive particle including extruding a mixture into a form, applying a dopant material to an exterior surface of the form, and forming a precursor shaped abrasive particle from the form.
522 Citations
20 Claims
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1. A particulate material comprising:
a shaped abrasive particle having a body comprising a length, a width, and a thickness, wherein the body comprises a central region including the geometric center of the body having a first dopant material present in a center dopant amount (DCc), the body further comprising an upper surface defined by the dimensions of length and width, the upper surface having a second dopant material present in an upper surface dopant amount (DUSc), wherein the body comprises a dopant amount difference (Δ
Dc) between the center dopant amount and the upper surface dopant amount, and wherein the dopant amount difference (Δ
Dc) is at least about 0.2 wt % and not greater than about 30 wt %.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13)
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11. A particulate material comprising:
a shaped abrasive particle having a body comprising a length, a width, and a thickness, wherein the body comprises a central region including the geometric center of the body having a first dopant material present in a center dopant amount (DCc), the body further comprising an upper surface defined by the dimensions of length and width, the upper surface having a second dopant material present in an upper surface dopant amount (DUSc), wherein the body comprises a dopant amount difference (Δ
Dc) between the center dopant amount and the upper surface dopant amount, and wherein the body comprises not greater than about 12 wt % of the first dopant material for the total weight of the body and at least about 0.5 wt % of the first dopant material for the total weight of the body.- View Dependent Claims (12, 14, 15)
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16. A particulate material comprising:
a shaped abrasive particle having a body comprising a length, a width, and a thickness, wherein the body comprises a central region including the geometric center of the body having a first dopant material present in a center dopant amount (DCc,), the body further comprising an upper surface defined by the dimensions of length and width, the upper surface having a second dopant material present in an upper surface dopant amount (DUSc), wherein the body comprises a dopant amount difference (Δ
Dc) between the center dopant amount and the upper surface dopant amount, and wherein the body comprises not greater than about 12 wt % of the second dopant material for the total weight of the body and at least about 0.5 wt % of the second dopant material for the total weight of the body.- View Dependent Claims (17, 18, 19, 20)
Specification