Abstract: Scintillator materials based on mixed garnet compositions, as well as corresponding methods and systems, are described.

Abstract: Scintillator materials based on mixed garnet compositions, as well as corresponding methods and systems, are described.

Abstract: A study of several key conditioner design parameters has been conducted. The purpose was to improve conditioner performance by considering factors such as wafer defects, pad life, and conditioner life. For this study, several key conditioner design parameters such as diamond type, diamond size, diamond shape, diamond concentration and distribution, were selected to determine their effect on CMP performance and process stability. Experimental validations were conducted. Conditioner specifications were matched to each specific CMP environment (intended application) in order to improve process stability and CMP performance particularly for emerging technology nodes. Several conditioner designs were developed and run successfully in the field. Significant planarity improvement for a 300 mm CMP process was achieved in accordance with one embodiment, and an increase of pad life and wafer polish rate was simultaneously achieved with another embodiment.

Abstract: Scintillator materials based on mixed garnet compositions, as well as corresponding methods and systems, are described.

Abstract: Tools for conditioning chemical mechanical planarization (CMP) pads comprise a substrate with abrasive particles coupled to at least one surface. The tools can have various particle and bond configurations. For instance, abrasive particles may be bonded (e.g., brazed or other metal bond technique) to one side, or to front and back sides. Alternatively, abrasive particles are bonded to a front side, and filler particles coupled to a back side. The abrasive particles can form a pattern (e.g., hexagonal) and have particle sizes that are sufficiently small to penetrate pores of a CMP pad during conditioning, leading to fewer defects on wafers polished with the conditioned CMP pad. Grain bonding can be accomplished using brazing films, although other metal bonds may be used as well. Also, balanced bond material (e.g., braze on both sides) allows for low out-of-flatness value.

Abstract: A study of several key conditioner design parameters has been conducted. The purpose was to improve conditioner performance by considering factors such as wafer defects, pad life, and conditioner life. For this study, several key conditioner design parameters such as diamond type, diamond size, diamond shape, diamond concentration and distribution, were selected to determine their effect on CMP performance and process stability. Experimental validations were conducted. Conditioner specifications were matched to each specific CMP environment (intended application) in order to improve process stability and CMP performance particularly for emerging technology nodes. Several conditioner designs were developed and run successfully in the field. Significant planarity improvement for a 300 mm CMP process was achieved in accordance with one embodiment, and an increase of pad life and wafer polish rate was simultaneously achieved with another embodiment.

Abstract: Tools for conditioning chemical mechanical planarization (CMP) pads comprise a substrate with abrasive particles coupled to at least one surface. The tools can have various particle and bond configurations. For instance, abrasive particles may be bonded (e.g., brazed or other metal bond technique) to one side, or to front and back sides. Alternatively, abrasive particles are bonded to a front side, and filler particles coupled to a back side. The abrasive particles can form a pattern (e.g., hexagonal) and have particle sizes that are sufficiently small to penetrate pores of a CMP pad during conditioning, leading to fewer defects on wafers polished with the conditioned CMP pad. Grain bonding can be accomplished using brazing films, although other metal bonds may be used as well. Also, balanced bond material (e.g., braze on both sides) allows for low out-of-flatness value.

Abstract: A drum grinding wheel includes an elongated drum configured for coaxial engagement with a spindle of a grinding machine. An exterior surface of the drum extends parallel to a central axis, and a plurality of removable cutters are removably fastened to the exterior surface. Each of the cutters has a plurality of ribs disposed in spaced relation thereon, and abrasive grain is disposed on a grinding face of each of the ribs, such as by use of a metallic braze.

Abstract: A process for metal coating diamond superabrasive particles involves heating the superabrasive particles in the presence of coat-forming powder of a metal compound under a common inert atmosphere. The metal compound contains a metal which can be thermochemically reduced by the superabrasive substance serving as the reducing agent. The process forms a chemical bond at the interface between the outer metal layer and the superabrasive particle substrate. The metal coated superabrasive particles can be hydrogen treated in situ and separated from excess coat-forming powder easily by filtration. The product particles are ideal for use in a wide variety of metal bonded cutting, machining, dressing and other abrasive tools, especially diamond film insert and single layer diamond tools.

Abstract: A process for metal coating diamond superabrasive particles involves heating the superabrasive particles in the presence of coat-forming powder of a metal compound under a common inert atmosphere. The metal compound contains a metal which can be thermochemically reduced by the superabrasive substance serving as the reducing agent. The process forms a chemical bond at the interface between the outer metal layer and the superabrasive particle substrate. The metal coated superabrasive particles can be hydrogen treated in situ and separated from excess coat-forming powder easily by filtration. The product particles are ideal for use in a wide variety of metal bonded cutting, machining, dressing and other abrasive tools, especially diamond film insert and single layer diamond tools.

Abstract: A process for metal coating diamond superabrasive particles involves heating the superabrasive particles in the presence of coat-forming powder of a metal compound under a common inert atmosphere. The metal compound contains a metal which can be thermochemically reduced by the superabrasive substance serving as the reducing agent. The process forms a chemical bond at the interface between the outer metal layer and the superabrasive particle substrate. The metal coated superabrasive particles can be hydrogen treated in situ and separated from excess coat-forming powder easily by filtration. The product particles are ideal for use in a wide variety of metal bonded cutting, machining, dressing and other abrasive tools, especially diamond film insert and single layer diamond tools.

Abstract: A process for metal coating diamond superabrasive particles involves heating the superabrasive particles in the presence of coat-forming powder of a metal compound under a common inert atmosphere. The metal compound contains a metal which can be thermochemically reduced by the superabrasive substance serving as the reducing agent. The process forms a chemical bond at the interface between the outer metal layer and the superabrasive particle substrate. The metal coated superabrasive particles can be hydrogen treated in situ and separated from excess coat-forming powder easily by filtration. The product particles are ideal for use in a wide variety of metal bonded cutting, machining, dressing and other abrasive tools, especially diamond film insert and single layer diamond tools.

Abstract: A process for producing a ceramic-metal composite body exhibiting binder enrichment and improved fracture toughness at its surface. The process involves forming a shaped body from a homogeneous mixture of: (a) about 2-15 w/o Co or about 2-12 w/o Ni binder, (b) excess carbon, (c) optionally, 0 to less than 5.0 v/o B-1 carbides, and (d) remainder tungsten carbide. The mixture contains sufficient total carbon to result in an ASTM carbon porosity rating of C06 to C08 at the core of the densified body. The weight ratio of excess carbon to binder is about 0.05:1 to 0.037:1. The shaped body is densified in a vacuum or inert atmosphere at or above about 1300.degree. C. and slow cooled, at least to about 25.degree. below the eutectic temperature. Alternatively, the sintered body may be cooled to a holding temperature at or slightly above the eutectic temperature, isothermally held for at least 1/2 hr, and further cooled to ambient.

Abstract: This invention relates to abrasion resistant materials and to articles of manufacture made therefrom. More particularly, it is concerned with abrasion resistant materials comprising boron doped TiC or boron doped VC distributed in a matrix containing silicon nitride and with articles made therefrom.

Abstract: A steel roughing grade coated cemented carbide cutting tool comprises WC grains equal to or less than 70 w/o of the tool substrate, from about 5 to about 10 w/o of a cobalt bonding phase and the remainder being metal carbide grains selected from the group TiC, TaC, NbC, HfC and combinations thereof. The average WC grain size is from about 0.9 to about 1.3 microns and less than 10% of the WC grains have a size less than 0.5 microns. The coated cemented carbide tool is coated with an adherent refractory coating layer. The coated cemented carbide cutting tool can be used to machine steel at rough and heavy rough cutting conditions.

Abstract: A steel roughing grade coated cemented carbide cutting tool comprises WC grains equal to or less than 70 w/o of the tool substrate, from about 5 to about 10 w/o of a cobalt bonding phase and the remainder being metal carbide grains selected from the group TiC, TaC, NbC, HfC and combinations thereof. The average WC grain size is from about 0.9 to about 1.3 microns and less than 10% of the WC grains have a size less than 0.5 microns. The coated cemented carbide tool is coated with an adherent refractory coating layer. The coated cemented carbide cutting tool can be used to machine steel at rough and heavy rough cutting conditions.

Abstract: A coated insert for such drilling tool bits as mine tool roof bits or masonry drill bits. A hard, fracture resistant substrate is coated with one or more thin adherent layers of refractory coating material. The material of each layer is a carbide, nitride, or carbonitride of titanium, hafnium, vanadium, tantalum, or niobium, or an oxide of aluminum or zirconium or a mixture or solid solution of these compounds. Methods for drilling holes in a mine roof or other hard materials are also disclosed.

Abstract: The present invention is directed to a triple coated cemented hard metal carbide product in which a cemented metal carbide substrate is coated with, first, a metal carbide coating to promote coating adherence to the substrate, secondly, a metal nitride or carbonitride coating to promote crater wear resistance and, thirdly, a metal carbide outer layer to promote flank flank wear resistance in order to protect the cemented metal carbide substrate from corrosive atmosphere and abrasion due to frictional flank wear.