| 摘要 |
PURPOSE: A metal bonded abrasive tool is provided which has improved life and mechanical properties and the bond composition allowing for improved life and mechanical properties, particularly in diamond blade dressing tools. CONSTITUTION: An abrasive tool comprises abrasive particles bonded by a metal bond comprising a hard phase, a binder phase selected from cobalt, iron, nickel, their alloys and combinations thereof, and an active phase consisting of chemical reactants suitable for forming carbide or nitride compositions in combination with diamond or cubic boron nitride abrasives, respectively. The abrasive tools generally comprise a metallic core or shank and the metal bonded abrasive composition which is attached to the metallic core or shank by brazing, infiltration, adhesive bonding, metal bonding or other methods known in the art. In an optional aspect of the invention, the metal bond also may be densified with an infiltrant phase of metals, such as copper, tin, silver, zinc, phosphorus, aluminum, and their alloys and combinations thereof. |
