Coated abrasive materials can be made from a substrate and, adhered to the substrate by a maker coat, weak shaped abrasive grits with, interspersed between the abrasive grits, a plurality of non-abrasive particles that are smaller than the abrasive grits which serve to raise the level of a size coat applied over the maker coat and abrasive grits such that the abrasive grits are anchored over a greater part of their length without the need for the application of a large volume of size coat and su...

An abrasive composition which can realize chemical-mechanical polishing superior in polishing speed and polishing uniformity. The abrasive composition comprises abrasive grains, isopropyl alcohol, and water. Grain sizes of the abrasive grains are preferably 30 to 250 nm, and the abrasive grains are preferably SiO.sub.2. Further, it is preferable that contents of the abrasive grains and isopropyl alcohol are 5 to 30 wt % and 1 to 15 wt %, respectively. The abrasive composition of the present inve...

An abrasive body, particularly a tool insert, comprises an abrasive layer bonded to a substrate along an interface. The abrasive layer extends into the substrate to a depth below the interface at the periphery of the body and defines a continuous border around the periphery of the body. The abrasive body is further provided with one or more projections which extend from the interface into one of the layers. If the projection extends into the abrasive layer it is of the same material as the subst...

A device for containing abrasive particles expelled from air-abrasive apparatus and permitting their facile removal without the aid of a vacuum source, while facilitating a relatively unobstructed view of the working area during use. One embodiment disclosed is a device for containing abrasive material expelled by a gas abrasive dental apparatus. The device comprises a flexible puncturable, substantially flat distal sheet comprising one side of the device for isolating a tooth surface to be abra...

A glass-ceramic composition which is is crystallized in situ from a thermally crystallizable mixture containing from about 40 to about 80 weight percent of electric arc furnace dust and from about 10 to about 40 weight percent of glass. The composition has a Vickers hardness of at least about 5.5 gigaPascals, a Vickers fracture toughness of from about 0.6 to about 1.5 megaPascals.meters.sup.0.5, and a density of from about 2.8 to about 4.1 grams per cubic centimeter; and it contains from about 2...

Oral compositions, such as oral gels and toothpastes, containing a novel high cleaning, low abrasion silica hydrogel abrasive.

An abrasive plate having an abrasive surface for performing abrading applications is provided. The plate includes a base member having a substantially smooth surface with a plurality of holes formed therethrough. A plurality of pairs of spaced apart slots radiate outwardly from each of the holes to define tab members. The tab members may be selectively raised or deformed to protrude from the smooth surface to collectively form an abrasive surface. The number of tabs raised may be selected to con...

The present invention provides a metal bonded abrasive tool wherein the tool has improved life and mechanical properties. The invention further includes the bond composition which allows for improved life and mechanical properties, particularly in diamond blade dressing tools.

An abrasive article such as a cup-shaped grinding wheel is provided, said grinding wheel having a cup-shaped support member of a cross-section providing an annular support surface to which is secured an annular abrasive member consisting of an annular polyimide resin-bonded diamond abrasive member and an annular back-up member of abradable porous polyimide secured to the inside surface of the annular polyimide bonded diamond abrasive member; the porous polyimide back-up member wears away in use ...

An abrasive article comprising abrasive grains, bonding agents and at least partially active fillers, whereby the active filler material is located in or on the abrasive grains.