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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0598860 (2015-01-16) |
등록번호 | US-9598620 (2017-03-21) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 0 인용 특허 : 332 |
An abrasive article includes a body having abrasive particles contained within a bond material. The abrasive particles can include a majority content of silicon nitride and a minority content of sintering material including at least two rare-earth oxide materials. In an embodiment, the rare-earth ox
An abrasive article includes a body having abrasive particles contained within a bond material. The abrasive particles can include a majority content of silicon nitride and a minority content of sintering material including at least two rare-earth oxide materials. In an embodiment, the rare-earth oxide materials can include Nd2O3 and Y2O3. In a particular embodiment, the abrasive particles comprise a content (wt %) of Nd2O3 that is greater than a content of Y2O3 (wt %).
1. A shaped abrasive particle comprising: a body having (i) a majority content of silicon nitride; and (ii) a minority content of sintering material including Nd2O3 and Y2O3, wherein the shaped abrasive particle comprises a content (wt %) of Nd2O3 greater than a content (wt %) of Y2O3;wherein the bo
1. A shaped abrasive particle comprising: a body having (i) a majority content of silicon nitride; and (ii) a minority content of sintering material including Nd2O3 and Y2O3, wherein the shaped abrasive particle comprises a content (wt %) of Nd2O3 greater than a content (wt %) of Y2O3;wherein the body of the shaped abrasive particle has a two-dimensional shape as viewed in a plane defined by a length and a width of the body; andwherein the two-dimensional shape is selected from the group consisting of a polygonal shape, an ellipsoidal shape, a numeral, a Greek alphabet character, a Latin alphabet character, a Russian alphabet character, and a complex shape utilizing a combination of polygonal shapes. 2. The shaped abrasive particle of claim 1, wherein the body of the shaped abrasive particle is part of a coated abrasive article or a bonded abrasive article. 3. The shaped abrasive particle of claim 1, wherein the body of the shaped abrasive particle comprises no greater than 5 vol % porosity. 4. The shaped abrasive particle of claim 1, wherein a side face of the shaped abrasive particle is convex or concave. 5. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle comprises a total content of rare earth oxide greater than a content of alumina. 6. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle comprises no greater than 10 wt % of a dopant material. 7. The shaped abrasive particle of claim 6, wherein the dopant material is selected from the group consisting of an alkali element, an alkaline earth element, a rare earth element, hafnium, zirconium, niobium, tantalum, molybdenum, vanadium, or a combination thereof. 8. The shaped abrasive particle of claim 1, wherein the body of the shaped abrasive particle has a first height, h1, at a first end of the body, and a second height, h2 at a second end of the body opposite the first end, and wherein h1 is different than h2. 9. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle comprises a majority content (>50 wt %) of beta-phase silicon nitride. 10. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle has a base surface and an upper surface, and wherein the base surface has a planar shape different than a planar shape of the upper surface. 11. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle has a center of mass and a geometric midpoint, and wherein the center of mass is disposed at a different location than the geometric midpoint. 12. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle has a twist angle rotatably offsetting opposing end faces of the shaped abrasive particle, the twist angle being less than 360°. 13. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle has: an aspect ratio of length:width of at least 1:1,an aspect ratio of height:width of at least 0.5:1,an aspect ratio of length:height of at least 1:1, ora combination thereof. 14. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle further comprises a sintering aid. 15. The shaped abrasive particle of claim 14, wherein the sintering aid comprises an oxide selected from the group consisting of Al2O3, MgO, TiO2, AlN, or a combination thereof. 16. The shaped abrasive particle of claim 14, wherein the sintering aid comprises no greater than 13.2 wt % of the shaped abrasive particle. 17. The shaped abrasive particle of claim 1, wherein the shaped abrasive particle comprises a polyhedron. 18. A batch of shaped abrasive particles comprising: a plurality of shaped abrasive particles, wherein each shaped abrasive particle of the plurality of shaped abrasive particles comprises: a body having (i) a majority content of silicon nitride; and (ii) a minority content of sintering material including Nd2O3 and Y2O3, wherein the shaped abrasive particle comprises a content (wt %) of Nd2O3 greater than a content (wt %) of Y2O3;wherein the body of the shaped abrasive particle has a two-dimensional shape as viewed in a plane defined by a length and a width of the body; andwherein the two-dimensional shape is selected from the group consisting of a polygonal shape, an ellipsoidal shape, a numeral, a Greek alphabet character, a Latin alphabet character, a Russian alphabet character, and a complex shape utilizing a combination of polygonal shapes.
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