Plasma treated abrasive article and method of making same
An abrasive article, such as a structured abrasive article, can be treated by subjecting it to plasma whereby the outer surface can be eroded exposing at least a portion of the abrasive particles dispersed within a cross-linked binder forming the abrasive composites. Depending on the process conditions for the plasma treatment, it is possible to erode only a small portion or substantially all of the cross-linked binder from the outer surface. Thus, the initial cut-rate of the abrasive article can be controlled since it is possible to precisely control the degree, height, or area of the exposed abrasive particles.
1. A structured abrasive article comprising a structured abrasive layer attached to a first major surface of a backing, the structured abrasive layer comprising a plurality of shaped abrasive composites formed by a plurality of abrasive particles in a cross-linked binder, the structured abrasive layer having an outer surface and the outer surface comprising a carbon content of less than about 60 atomic %, and wherein the outer surface comprises a fluoride content of greater than about 5 atomic %.
2. The structured abrasive article of claim 1 wherein the outer surface comprises an oxygen content of greater than about 30 atomic %.
3. The structured abrasive article of claim 2 wherein the carbon content is less than about 30 atomic %.
4. The structured abrasive article of claim 1 wherein the plurality of shaped abrasive composites each comprises a precisely-shaped abrasive composite.
5. The structured abrasive article of claim 4 wherein the outer surface comprises an oxygen content of greater than about 30 atomic %.
6. The structured abrasive article of claim 5 wherein the carbon content is less than about 30 atomic %.
7. A structured abrasive article comprising a structured abrasive layer attached to a first major surface of a backing, the structured abrasive layer comprising a plurality of shaped abrasive composites formed by a plurality of abrasive particles in a cross-linked binder, the structured abrasive layer having an outer surface and the outer surface comprising a carbon content of less than about 60 atomic %, and wherein the outer surface comprises an oxygen content of greater than about 30 atomic % .
8. The structured abrasive article of claim 7 wherein the outer surface comprises a fluoride content of greater than about 5 atomic %.
9. The structured abrasive article of claim 7 wherein the carbon content is less than about 30 atomic %.
10. The structured abrasive article of claim 7 wherein the plurality of shaped abrasive composites each comprises a precisely-shaped abrasive composite.
11. The structured abrasive article of claim 10 wherein the outer surface comprises a fluoride content of greater than about 5 atomic %.
12. The structured abrasive article of claim 11 wherein the carbon content is less than about 30 atomic %.