Abrasive Article Comprising Abrasive Particles of a Composite Composition

Abstract

An abrasive article has a body including an abrasive portion with a bond material, abrasive particles contained in the bond material, and a reinforcing member contained in the body. The abrasive portion can have a fracture propagation toughness WOF of at least about 5 kJ/m 2 . The reinforcing member can have openings with an open area of not greater than about 100 mm 2 within a major plane of the reinforcing member.

What is claimed is: 
     
         1 . An abrasive article comprising:
 a body including an abrasive portion having:
 a bond material; 
 abrasive particles contained in the bond material; 
 a reinforcing member contained in the body; wherein 
 the abrasive portion has a fracture propagation toughness WOF of at least about 5 kJ/m 2 , and the reinforcing member has openings with an open area of not greater than about 100 mm 2  within a major plane of the reinforcing member. 
   
     
     
         2 . The abrasive article of  claim 1 , wherein the fracture propagation toughness WOF is at least about 6 kJ/m 2 . 
     
     
         3 . The abrasive article of  claim 1 , wherein the reinforcing member comprises a greige weight of not greater than about 950 g/m 2 , and not less than about 400 g/m 2 . 
     
     
         4 . The abrasive cutting tool of  claim 1 , wherein the reinforcing member comprises a maximum thickness of at least about 1 mm, and not greater than about 2 mm. 
     
     
         5 . The abrasive article of  claim 1 , wherein the reinforcing member comprises threads with the openings therebetween, and the threads have a width of not less than about 1 mm, and not greater than about 4 mm. 
     
     
         6 . The abrasive cutting tool of  claim 1 , wherein the open area is not greater than about 80 mm 2  within the major plane of the reinforcing member, and at least about 5 mm 2 . 
     
     
         7 . The abrasive article of  claim 1 , wherein the reinforcing member comprises fiber bundles with the openings therebetween, and a distance from one fiber bundle to an adjacent fiber bundle is at least about 2 mm, and not greater than about 10 mm. 
     
     
         8 . The abrasive cutting tool of  claim 1 , wherein the openings extend axially through at least a portion of a thickness of the reinforcing member. 
     
     
         9 . The abrasive cutting tool of  claim 1 , wherein the reinforcing member comprises not greater than about 0.5% of an average thickness of the body, and not greater than about 5%. 
     
     
         10 . The abrasive cutting tool of  claim 1 , wherein a volumetric ratio of the abrasive portion to the reinforcing member is at least about 5, and not greater than about 20. 
     
     
         11 . The abrasive cutting tool of  claim 1 , wherein the body has an adhesion of at least about 1700 lbf. 
     
     
         12 . The abrasive article of  claim 11 , wherein the adhesion of the body is at least about 1800 lbf, and not greater at least about 2200 lbf. 
     
     
         13 . The abrasive cutting tool of  claim 1 , wherein the body has an Adhesion Variance Factor (AVF) of not greater than about 10%. 
     
     
         14 . The abrasive article of  claim 1 , wherein the reinforcing member has a fracture initiation toughness (G 1C ) of at least about 3.3 kJ/m 2 , and not greater than about 5 kJ/m 2 . 
     
     
         15 . The abrasive article of  claim 1 , further comprising a first filler contained within the abrasive portion comprising iron and sulfur having an average particle size of not greater than about 40 microns, wherein the first filler comprises pyrite (FeS 2 ), wherein the first filler consists essentially of pyrite. 
     
     
         16 . The abrasive article of  claim 1 , wherein the body comprises at least about 30 vol % bond material for the total volume of the body, at least about 35 vol %, at least about 40 vol %, at least about 45 vol %, at least about 50 vol %, at least about 55 vol %, at least about 60 vol %, at least about 65 vol %, and not greater than about 70 vol %, not greater than about 65 vol %, not greater than about 60 vol %, not greater than about 55 vol %, not greater than about 50 vol %, not greater than about 45 vol %, not greater than about 40 vol %, not greater than about 35 vol %. 
     
     
         17 . The abrasive article of  claim 1 , wherein the body comprises at least about 30 vol % abrasive particles for the total volume of the body, at least about 35 vol %, at least about 40 vol %, at least about 45 vol %, at least about 50 vol %, at least about 55 vol %, at least about 60 vol %, at least about 65 vol %, and not greater than about 70 vol %, not greater than about 65 vol %, not greater than about 60 vol %, not greater than about 55 vol %, not greater than about 50 vol %, not greater than about 45 vol %, not greater than about 40 vol %, not greater than about 35 vol %. 
     
     
         18 . An abrasive article comprising:
 a body including an abrasive portion having:
 a bond material; 
 abrasive particles contained in the bond material; 
 a first filler contained within the abrasive portion comprising iron and sulfur having an average particle size of not greater than about 40 microns; and 
 a reinforcing member contained in the body, the reinforcing member comprising: 
 (a) a greige weight of not greater than about 950 g/m 2 ; or 
 (b) a thickness of not greater than about 2 mm; or 
 (c) fiber bundles with the openings therebetween, and one fiber bundle and one opening have a combined dimension of not greater than about 15 mm; or 
 (d) openings with an open area of not greater than about 100 mm 2 . 
   
     
     
         19 . The abrasive article of  claim 1 , wherein the reinforcing member comprises a lock leno weave.