Abstract: The present invention provides a polishing composition for use in polishing a material having a Vickers hardness of 1500 Hv or higher. The polishing composition has an oxidation-reduction potential ORPx mV and the material to be polishing has an oxidation-reduction potential ORPy mV, with their relation satisfying ORPx?ORPy?100 mV.

Abstract: A method of making a polycrystalline diamond compact includes forming a first layer of polycrystalline diamond precursor materials comprising diamond particles and a first concentration of catalyst, forming a second layer of polycrystalline diamond precursor materials comprising diamond particles and a second concentration of catalyst, and placing a layer of an infiltrant material in the proximity of the first or the second layer of polycrystalline diamond precursor materials. The second concentration of catalyst is greater than the first concentration of catalyst. The infiltrant material is a catalyst. The first layer and the second layer are sintered under high-pressure high-temperature conditions in the presence of the infiltrant material to form the polycrystalline diamond compact. At least a portion of the catalyst is leached from the polycrystalline diamond compact.

Abstract: A product for incorporating ultraviolet radiation protection and antimicrobial protection into a synthetic polymer is disclosed which has a quantity of zinc oxide particles modified with a layer of a reactive group that forms a bond with a quantity of synthetic polymer chips having C—H bonds. A product for incorporating ultraviolet radiation protection and antimicrobial protection into a synthetic polymer prior to forming a synthetic material is also disclosed which has a quantity of synthetic polymer chips and a quantity of zinc oxide particles modified with a layer of a reactive group that forms a bond with the quantity of the synthetic polymer chips.

Abstract: A cutting tool has a substrate of cemented carbide including WC and a binder phase. The cutting tool has a gradient surface zone with a thickness of between 50-400 ?m having a binder phase gradient with the lowest binder phase content in the outermost part of the gradient surface zone and wherein the cutting tool also includes free graphite. The present disclosure also relates to a method of making a cutting tool according to the above. The cemented carbide body shows improved resistance towards chemical wear when used for machining non-ferrous alloys such as Ti-alloys and Ni-based alloys.

Abstract: Shaped abrasive particles each having a sloping sidewall. Each of the shaped abrasive particles containing alpha alumina and having a first face and a second face separated by a thickness, t. The shaped abrasive particles further having a draft angle ? between the second face and the sloping sidewall, and the draft angle ? is between about 95 degrees to about 125 degrees.

Abstract: An abrasive product having an abrasive surface, a belt of an abrasive product, a roll of an abrasive product and a method for manufacturing an abrasive product. An abrasive product includes a backing and an abrasive surface. The abrasive surface includes at least a first abrasive area and a second abrasive area, wherein abrasive properties of the first abrasive area are different from abrasive properties of the second abrasive area.

Abstract: The present invention relates generally to coated abrasive articles that include a blend of abrasive particles, an increased tear resistance, or combinations thereof, as well as methods of making and using said coated abrasive articles.

Abstract: A process for the manufacturing of a slurry containing nucleating agents which comprises reacting at least one source of a Ca containing compound with at least one source of a Si containing compound, in an aqueous media and in the presence of a doping agent selected from the group consisting of P, B, S, and mixtures thereof; wherein: (i) the reaction is carried out at a temperature comprised from 100 to 350° C.; (ii) the total molar ratio Ca/Si is 1.5-2.5, and (iii) the total molar ratio doping agent/Si is 0.01-2; provided that: (a) when the sole doping agent is P, the total molar ratio P/Si is 0.1-2; (b) when the sole doping agent is B, the total molar ratio B/Si is 0.01-2, and (c) when the sole doping agent is S, the total molar ratio S/Si is 0.1-2.

Abstract: A process for the preparation of a mineral filler product is disclosed, the process comprising a step of dry grinding a calcium carbonate-comprising material in a mixture obtained by contacting the calcium carbonate-comprising material with at least one polydimethylsiloxane as grinding agent.

Abstract: Embodiments of the present disclosure relate to advanced polishing pads with tunable chemical, material and structural properties, and new methods of manufacturing the same. According to one or more embodiments of the disclosure, it has been discovered that a polishing pad with improved properties may be produced by an additive manufacturing process, such as a three-dimensional (3D) printing process. Embodiments of the present disclosure thus may provide an advanced polishing pad that has discrete features and geometries, formed from at least two different materials that include functional polymers, functional oligomers, reactive diluents, addition polymer precursor compounds, catalysts, and curing agents.

Abstract: The present disclosure relates to polycrystalline cubic boron nitride (PCBN) with enhanced impact-resistance and wear-resistance and a method for producing the PCBN. According to the present disclosure, producing the polycrystalline cubic boron nitride with one or more kinds of protrusion-shaped borides formed on the cubic boron nitride surface may inhibits the development of cracks along the surfaces of the cubic boron nitride particles and binders, thereby to improve the impact-resistance and wear-resistance. In this way, the life-span of the machining tools may be enhanced. Further, the polycrystalline cubic boron nitride may have at least one kind of a compound composed of at least two selected from the group consisting of BN, Ti, W, Co, Zr, and Si as formed during sintering. This may allow the PCBN to have high bonding strength between the cubic boron nitride and the binder.

Abstract: Methods of laser cutting polycrystalline diamond tables and polycrystalline diamond compacts are disclosed. Laser cutting of the polycrystalline diamond table provides an alternative to electrical-discharge machining (“EDM”), grinding with a diamond wheel, or lapping with a diamond wheel. Grinding or lapping with a diamond wheel is relatively slow and expensive, as diamond is used to remove a diamond material. EDM cutting of the polycrystalline diamond table is sometimes impractical or even impossible, particularly when the cobalt or other infiltrant or catalyst concentration within the polycrystalline diamond table is very low (e.g., in the case of a leached polycrystalline diamond table). As such, laser cutting provides a valuable alternative machining method that may be employed in various processes such as laser scribing, laser ablation, and laser lapping.

Abstract: A method of making magnetizable abrasive particles includes: moistening the outer surfaces of ceramic particles with waterglass to provide moistened ceramic particles. Magnetizable particles are contacted with the moistened ceramic particles to provide powder-coated ceramic particles. The powder-coated ceramic particles are heated to at least a temperature sufficient to bond the magnetizable particles of the powder-coated ceramic particles to the respective ceramic particles thereby providing the magnetizable abrasive particles. On a respective basis, each magnetizable abrasive particle comprises a respective ceramic particle having a magnetizable particles bonded thereto.

Abstract: An abrasive article configured to grind a workpiece having a fracture toughness of at least about 5.5 MPa·m0.5 may include a body comprising abrasive particles contained within a bond material comprising a metal, wherein the body comprises a ratio of VAG/VBM of at least about 1.3, wherein VAG is a volume percent of abrasive particles within a total volume of the body and VBM is a volume percent of bond material within the total volume of the body, and wherein the abrasive particles have an average particle size of at least about 1 micron and not greater than about 20 microns.

Abstract: A bonded abrasive article can include a body including a bond material, abrasive particles contained within the bond material, and pores contained within the body. At least a portion of the pores of the body can include a coating. In one aspect, the coating can be a poly(p-xylylene) polymer applied via vapor deposition. The coated abrasive body can maintain a high permeability and pore volume after coating, and the coating can provide an increase in flexural strength and corrosion resistance to the abrasive article, thereby greatly enhancing its life time.

Abstract: Provided is a method for easily producing an oxidized carbon black aqueous dispersion that can highly remove multivalent metal ions and exhibit excellent dispersion stability. A method for producing an oxidized carbon black aqueous dispersion by successively performing on an aqueous slurry of oxidized carbon black having one or more anionic functional groups on a surface thereof a neutralization step of mixing an alkali metal hydroxide and performing heating/neutralization in the presence of one or more selected from a water-soluble chelating agent and a salt thereof or after mixing an alkali metal hydroxide and performing heating/neutralization, mixing one or more selected from a water-soluble chelating agent and a salt thereof and a separation and removal step of separating and removing a multivalent metal ion chelate complex from a mixed solution obtained at the neutralization step using a separation membrane.

Abstract: Methods of making an abrasive article. Abrasive particles are loaded to a distribution tool including a plurality of strips defining a plurality of channels. Each channel is open to a lower side of the tool. The loaded particles are distributed from the distribution tool to a major face of a backing web below the lower side. At least a majority of the particles distributed from the tool undergo an orientation sequence in which each particle first enters one of the channels. The particle then passes partially through the channel such that a first portion is beyond the lower side and in contact with the major face, and a second portion within the channel. The sequence then includes the particle remaining in simultaneous contact with one of the strips and the major face for a dwell period.

Abstract: A grindstone that enables grinding, polishing, super-finish polishing by using the same grindstone, without clogging even if the grindstone is being used continuously, in which a grinding/polishing section for processing a workpiece has a honeycomb structure formed by arranging polygonal prisms with no clearance therebetween. The grindstone includes the grindstone columns consisting of abrasive grains and binder and having an axis in depth direction of grinding/polishing surface, which are disposed on intersections or wall portions of the honeycomb structure. Porous elastomer is disposed inside the honeycomb structure, thus making it possible to perform a super-finish polishing.

Abstract: Induced material segregation methods of manufacturing a polycrystalline diamond compact (PDC) cutter result in formation of a polycrystalline diamond/tungsten carbide (WC) composite material having a smooth compositional gradient from maximum WC concentration at one face to maximum diamond concentration at another face. Because the compositional gradient is smooth, very little or no mismatch of coefficient of thermal expansion occurs, which improves a service lifetime of the PDC cutter.

Abstract: The present invention relates to a polishing pad and a method for making the same. The polishing pad includes a base layer and a polishing layer. The base layer has a first surface and a second surface. The polishing layer is disposed on the first surface of the base layer and has a plurality of second fibers, a polymeric elastomer and a plurality of pores. The second fibers are arranged irregularly and cross each other to form the pores, and the polymeric elastomer is attached to the second fibers and does not fill the pores.