Abrasive particles, abrasive articles, and methods of making and using the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01F-007/04
C01F-007/00
C09C-001/68
출원번호
US-0211598
(2002-08-02)
등록번호
US-7501000
(2009-03-10)
발명자
/ 주소
Rosenflanz,Anatoly Z.
Celikkaya,Ahmet
Anderson,Thomas J.
출원인 / 주소
3M Innovative Properties Company
대리인 / 주소
Allen,Gregory D.
인용정보
피인용 횟수 :
6인용 특허 :
217
초록
Abrasive particles comprising alpha alumina particles and methods of making the same. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.
대표청구항▼
What is claimed is: 1. A plurality of abrasive particles having a specified nominal grade, wherein at least a portion of the plurality of abrasive particles comprise a glass-ceramic, the glass-ceramic comprising alpha alumina having an average crystal size not greater than 150 nanometers, wherein t
What is claimed is: 1. A plurality of abrasive particles having a specified nominal grade, wherein at least a portion of the plurality of abrasive particles comprise a glass-ceramic, the glass-ceramic comprising alpha alumina having an average crystal size not greater than 150 nanometers, wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density. 2. The plurality of abrasive particles according to claim 1 wherein at least 75 percent by number of the alpha alumina crystals are no greater than 150 nanometers. 3. The plurality of abrasive particles according to claim 1 wherein at least 25 percent by weight of the abrasive particles are the abrasive particles comprising the alpha alumina having the average crystal size of not greater than 150 nanometers, based on the total weight of the plurality of abrasive particles. 4. The plurality of abrasive particles according to claim 1 wherein the specified nominal grade is selected from the group consisting of ANSI 4, ANSI 6, ANSI 8, ANSI 16, ANSI 24, ANSI 36, ANSI 40, ANSI 50, ANSI 60, ANSI 80, ANSI 100, ANSI 120, ANSI 150, ANSI 180, ANSI 220, ANSI 240, ANSI 280, ANSI 320, ANSI 360, ANSI 400, and ANSI 600. 5. The plurality of abrasive particles according to claim 1 wherein the specified nominal grade is selected from the group consisting of P8, P12, P16, P24, P36, P40, P50, P60, P80, P100, P120, P150, P180, P220, P320, P400, P500, P600, P800, P1000, and P1200. 6. The plurality of abrasive particles according to claim 1 wherein the specified nominal grade is selected from the group consisting of JIS8, JIS 12, JIS 16, JIS24, JIS36, JIS46, JIS54, JIS60, JIS80, JIS100, JIS150, JIS180, JIS220, JIS240, JIS280, JIS320, JIS360, JIS400, JIS600, JIS800, JIS1000, JIS1500, JIS2500, JIS4000, JIS6000, JIS8000, and JIS10,000. 7. An abrasive article comprising a binder and a plurality of abrasive particles, wherein at least a portion of the abrasive particles comprise a glass-ceramic, the glass-ceramic comprising alpha alumina having an average crystal size not greater than 150 nanometers, wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density. 8. The abrasive article according to claim 7 wherein the abrasive article is a bonded abrasive article, a non-woven abrasive article, or a coated abrasive article. 9. The abrasive article according to claim 7 wherein at least 75 percent by number of the alpha alumina crystals are no greater than 150 nanometers. 10. A method of abrading a surface, the method comprising: providing an abrasive article comprising a binder and a plurality of abrasive particles, wherein at least a portion of the abrasive particles comprise a glass-ceramic, the glass-ceramic comprising alpha alumina having an average crystal size not greater than 150 nanometers, wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density; contacting at least one of the abrasive particles comprising the alpha alumina with a surface of a workpiece; and moving at least one of the contacted abrasive particles comprising the alpha alumina or the contacted surface to abrade at least a portion of the surface with the contacted abrasive particle comprising the alpha alumina. 11. A plurality of abrasive particles having a specified nominal grade, wherein at least a portion of the plurality of abrasive particles comprise a glass-ceramic, the glass-ceramic comprising alpha alumina, wherein at least 90 percent by number of the alpha alumina present in such portion have crystal sizes not greater than 200 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density. 12. The plurality of abrasive particles according to claim 11 wherein at least a portion of the plurality of abrasive particles comprise alpha alumina having an average crystal size of greater than 200 nanometers. 13. The plurality of abrasive particles according to claim 11 wherein at least 95 percent by number of the alpha alumina present in such portion has an average crystal size of not greater than 200 nanometers. 14. The plurality of abrasive particles according to claim 11 wherein the specified nominal grade is selected from the group consisting of ANSI 4, ANSI 6, ANSI 8, ANSI 16, ANSI 24, ANSI 36, ANSI 40, ANSI 50, ANSI 60, ANSI 80, ANSI 100, ANSI 120, ANSI 150, ANSI 180, ANSI 220, ANSI 240, ANSI 280, ANSI 320, ANSI 360, ANSI 400, and ANSI 600. 15. The plurality of abrasive particles according to claim 11 wherein the specified nominal grade is selected from the group consisting of P8, P12, P16, P24, P36, P40, P50, P60, P80, P100, P120, P150, P180, P220, P320, P400, P500, P600, P800, P1000, and P1200. 16. The plurality of abrasive particles according to claim 11 wherein the specified nominal grade is selected from the group consisting of JIS8, JIS 12, JIS 16, JIS24, JIS36, JIS46, JIS54, JIS60, JIS80, JIS100, JIS150, JIS180, JIS220, JIS240, JIS280, JIS320, JIS360, JIS400, JIS600, JIS800, JIS1000, JIS1500, JIS2500, JIS4000, JIS6000, JIS8000, and JIS10,000. 17. An abrasive article comprising a binder and a plurality of abrasive particles, wherein at least a portion of the abrasive particles comprise a glass-ceramic, the glass-ceramic comprising alpha alumina, wherein at least 90 percent by number of the alpha alumina present in such portion have crystal sizes not greater than 200 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density. 18. The abrasive article according to claim 17 wherein the abrasive article is a bonded abrasive article, a non-woven abrasive article, or a coated abrasive article. 19. The abrasive article according to claim 17 wherein the alpha alumina has an average crystal size of not greater than 150 nanometers. 20. A method of abrading a surface, the method comprising: providing an abrasive article comprising a binder and a plurality of abrasive particles, wherein at least a portion of the abrasive particles comprise glass-ceramic, the glass ceramic comprising alpha alumina and wherein at least 90 percent by number of the alpha alumina present in such portion have crystal sizes not greater than 200 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density; contacting at least one of the abrasive particles comprising the alpha alumina with a surface of a workpiece; and moving at least one of the contacted abrasive particles comprising the alpha alumina or the contacted surface to abrade at least a portion of the surface with the contacted abrasive particle comprising the alpha alumina. 21. A plurality of abrasive particles having a specified nominal grade, wherein at least a portion of the plurality of abrasive particles comprise a glass-ceramic, the glass-ceramic comprising at least 35 percent by weight Al2O3, based on the total weight of the glass-ceramic of each particle of the portion, and a metal oxide other than Al2O3, wherein at least a portion of the Al2O3, is crystalline, wherein any crystalline phase present in the glass-ceramic comprising Al2O3, has an average crystal size not greater than 150 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density. 22. An abrasive article comprising a binder and a plurality of abrasive particles, wherein at least a portion of the abrasive particles comprise a glass-ceramic, the glass-ceramic comprising at least 35 percent by weight Al2O3, based on the total weight of the glass-ceramic of each particle of the portion, and a metal oxide other than Al2O3, wherein at least a portion of the Al2O3 is crystalline, wherein any crystalline phase present in the glass-ceramic comprising Al2O3 has an average crystal size not greater than 150 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density. 23. A method of abrading a surface, the method comprising: providing an abrasive article comprising a binder and a plurality of abrasive particles, wherein at least a portion of the abrasive particles comprise a glass-ceramic, the glass-ceramic comprising at least 35 percent by weight Al2O3, based on the total weight of the glass-ceramic of each particle of the portion, and a metal oxide other than Al2O3, wherein at least a portion of the Al2O3 is crystalline, wherein any crystalline phase present in the glass-ceramic comprising Al2O3 has an average crystal size not greater than 150 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density; contacting at least one of the abrasive particles comprising the alpha glass-ceramic with a surface of a workpiece; and moving at least one of the contacted abrasive particles comprising the glass-ceramic or the contacted surface to abrade at least a portion of the surface with the contacted abrasive particle comprising the glass-ceramic. 24. A plurality of abrasive particles having a specified nominal grade, wherein at least a portion of the plurality of abrasive particles comprise a glass-ceramic, the glass-ceramic comprising at least 35 percent by weight Al2O3, based on the total weight of the glass-ceramic of each particle of the portion, and a metal oxide other than Al2O3, wherein at least a portion of the Al2O3 is crystalline, wherein at least 90 percent by number of any crystalline phase present in the glass-ceramic comprising Al2O3 have crystal sizes not greater than 200 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density. 25. An abrasive article comprising a binder and a plurality of abrasive particles, wherein at least a portion of the abrasive particles comprise a glass-ceramic, the glass-ceramic comprising at least 35 percent by weight Al2O3, based on the total weight of the glass-ceramic of each particle of the portion, and a metal oxide other than Al2O3, wherein at least a portion of the Al2O3 is crystalline, wherein at least 90 percent by number of any crystalline phase present in the glass-ceramic comprising Al2O3 have crystal sizes not greater than 200 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density. 26. A method of abrading a surface, the method comprising: providing an abrasive article comprising a binder and a plurality of abrasive particles, wherein at least a portion of the abrasive particles comprise a glass-ceramic, the glass-ceramic comprising at least 35 percent by weight Al2O3, based on the total weight of the glass-ceramic of each particle of the portion, and a metal oxide other than Al2O3, wherein at least a portion of the Al2O3 is crystalline, wherein at least 90 percent by number of any crystalline phase present in the glass-ceramic comprising Al2O3 have crystal sizes not greater than 200 nanometers, and wherein the abrasive particles of the portion have a density of at least 90 percent of theoretical density; contacting at least one of the abrasive particles comprising the glass-ceramic with a surface of a workpiece; and moving at least one of the contacted abrasive particles comprising the glass-ceramic or the contacted surface to abrade at least a portion of the surface with the contacted abrasive particle comprising the glass-ceramic.
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이 특허에 인용된 특허 (217)
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