Fixed abrasive articles

Abstract

Described are fixed abrasive articles including wear indicators.

1 . A fixed abrasive article comprising a three-dimensional abrasive composite in the form of abrasive composite elements, and further comprising a wear indicator.  
     
     
         2 . The fixed abrasive article of  claim 1  wherein the three-dimensional, fixed abrasive article is textured.  
     
     
         3 . The fixed abrasive article of  claim 1  comprising erodable abrasive composite elements.  
     
     
         4 . The fixed abrasive article of  claim 3  wherein the abrasive composite elements comprise a plurality of cylindrical posts.  
     
     
         5 . The fixed abrasive article of  claim 1  comprising a precisely-shaped abrasive composite.  
     
     
         6 . The fixed abrasive article of  claim 1  wherein the wear indicator comprises a visible marker in a binder.  
     
     
         7 . The fixed abrasive article of  claim 1  wherein the marker comprises a metallic material, a visible material, or a magnetic material.  
     
     
         8 . The fixed abrasive article of  claim 1  wherein the wear indicator comprises a colored marker.  
     
     
         9 . The fixed abrasive article of  claim 8  wherein the colored marker is chosen from the group consisting of a dye, a pigment, or a colorant.  
     
     
         10 . The fixed abrasive article of  claim 1  wherein the wear indicator comprises a visible marker contained in a binder.  
     
     
         11 . The fixed abrasive article of  claim 1  wherein the wear indicator comprises an abradable wear indicator coated on an abrasive surface of the fixed abrasive article.  
     
     
         12 . The fixed abrasive article of  claim 1  wherein the wear indicator comprises an abradable wear indicator embedded in an abrasive composite.  
     
     
         13 . The fixed abrasive article of  claim 1  wherein the wear indicator comprises a visible marker contained in a lower ten percent by height of an abrasive composite element.  
     
     
         14 . The fixed abrasive article of  claim 1  wherein the wear indicator comprises a wear indicator composite comprising a wear indicator and a binder adhered to a base, wherein upon contacting the substrate the wear indicator-composite element indicates contact between the wear indicator and the substrate.  
     
     
         15 . The fixed abrasive article of  claim 1  wherein the article comprises a fixed abrasive pad.  
     
     
         16 . The fixed abrasive article of  claim 1  wherein the article comprises a fixed abrasive belt.  
     
     
         17 . A fixed abrasive article comprising posts having an inert chemical or mechanical indication to indicate post consumption.  
     
     
         18 . The fixed abrasive article of  claim 17  wherein the fixed abrasive article is a pad.