Abstract: An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%.

Abstract: A mixture of fused grains mainly comprising or composed of an oxide phase of pseudo-brookite type and comprising titanium, aluminum and magnesium, the fused grains having the following chemical composition, in weight percentages on the basis of the oxides: less than 55% of Al2O3; more than 30% and less than 70% of TiO2; more than 1% and less than 15% of MgO, the fused grains also corresponding to the following composition, in molar percentages and on the basis of the single oxides Al2O3, TiO2, MgO: 180?3t+a?220, a?50, m=100?a?t, in which: a is the molar percentage of Al2O3; t is the molar percentage of TiO2; m is the molar percentage of MgO. A ceramic product obtained from such fused grains.

Abstract: A fused product including lithium-manganese spinel, which is optionally doped, having a spinel structure AB2O4, where the site A is occupied by lithium and the site B is occupied by manganese, it being possible for the site B to be doped with an element B? and it being possible for the site A to exert a substoichiometry or a superstoichiometry with respect to the site B, so that the product observes the formula Li(1+x)Mn(2?y)B?yO4, with ?0.20?x?0.4 and 0?y?1, the element B? being chosen from aluminum, cobalt, nickel, chromium, iron, magnesium, titanium, vanadium, copper, zinc, gallium, calcium, niobium, yttrium, barium, silicon, boron, zirconium and their mixtures.

Abstract: An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%.

Abstract: In a particular embodiment, a particulate material includes alumina hydrate. The particulate material has a 500 psi Compaction Volume Ratio of at least about 4.0 cc/cc.

Abstract: A composite material includes a non-polar polymer and alumina hydrate particulate. The composite material has a Heat Distortion Performance of at least about 10% relative to the non-polar polymer absent the alumina hydrate particulate. The composite material may include a coupling agent including a phosphinic acid group, a phosphonic acid group or an ester derivative thereof.

Abstract: In one embodiment a tin oxide based electrode is disclosed. The tin oxide-based electrode includes a base material of tin oxide, a resistivity modifier, a sintering aid, and a corrosion inhibitor. The corrosion inhibitor forms a solid solution with the base material and has a melting point not less than about 1700° C. and a partial pressure of not greater than about 1.0E-7 atmospheres at 1500° C. The corrosion inhibitor further includes 0-4.0 wt % ZrO2 based on the total weight of the composition.

Abstract: A composite material includes a non-polar polymer and alumina hydrate particulate. The composite material has a Heat Distortion Performance of at least about 10% relative to the non-polar polymer absent the alumina hydrate particulate. The composite material may include a coupling agent including a phosphinic acid group, a phosphonic acid group or an ester derivative thereof.

Abstract: An abrasive article can include an abrasive aggregate with the abrasive aggregate having a plurality of silicon carbide particles bonded together by a binder material. The binder material can include a vitreous phase material, a crystalline phase material, or both. In an embodiment, the crystalline phase material can include an aluminosilicate material. In a particular embodiment, abrasive aggregates can be formed from a mixture including silicon carbide particles, a binder material, and a liquid carrier. The mixture can be formed into a number of green granules that are vibrated and heated on a platen. In an illustrative embodiment, the green granules can then be heated to form abrasive aggregates.

Abstract: An abrasive article can include an abrasive segment. The abrasive segment can have a body that includes a plurality of abrasive aggregates. In addition, the abrasive aggregates can include a plurality of silicon carbide particles bonded together by a binder material phase. The abrasive aggregates can be contained within a bond material that includes a magnesia-based cement. In an embodiment, the binder material phase can include a vitreous phase material and a crystalline phase material. In particular instances, the binder material phase can include a certain porosity. In another embodiment, the abrasive segment can be formed from a mixture of abrasive aggregates including silicon carbide and a magnesia-based bond material.

Abstract: An abrasive article includes a bonded abrasive body having abrasive particles contained within a bond material. The abrasive particles include silicon carbide and are essentially free of carbon-based and boron-based sintering aid materials. In an embodiment, the bond material can include a phenolic resin. In another embodiment, the bonded abrasive body can include an oxide phase disposed interstitially between the silicon carbide abrasive particles. In an additional embodiment, the abrasive particles can consist essentially of silicon carbide and aluminum oxide in a ratio of silicon carbide to alumina of at least about 8:1.

Abstract: An abrasive article includes a body having abrasive particles contained within a bond material. The abrasive particles can include a majority content of silicon nitride and a minority content of sintering material including at least two rare-earth oxide materials. In an embodiment, the rare-earth oxide materials can include Nd2O3 and Y2O3. In a particular embodiment, the abrasive particles comprise a content (wt %) of Nd2O3 that is greater than a content of Y2O3 (wt %).

Abstract: A method of polishing a workpiece can include placing a workpiece on a support structure. In an embodiment, the method can also include contacting the workpiece with an abrasive segment. The abrasive segment can include a plurality of abrasive aggregates that include silicon carbide particles bound together in a binder material. Additionally, the method can include moving the abrasive segment and the workpiece relative to each other.

Abstract: In a particular embodiment, a particulate material includes alumina hydrate. The particulate material has a 500 psi Compaction Volume Ratio of at least about 4.0 cc/cc.

Abstract: A method for making abrasive grains, the method comprising mixing one or more solids with one or more liquids in a twin screw extruder to form a mixture, transferring the mixture to a high pressure piston extruder; and extruding the mixture from the high pressure piston extruder through a die to form an extrude. The method further includes segmenting the extrudate to form extruded shaped abrasive particles.

Abstract: A green part, a region of a refractory furnace or a hollow piece for producing a sintered refractory has the following mean mineral chemical composition in weight percent based of mineral oxides: 40%?Al2O3?94%, 0%?ZrO2?41%, 2%?SiO2?22%, 1%<Y2O3+V2O5+TiO2+Sb2O3+Yb2O3+Na2O. The sintered refractory products obtained from this green part give rise to a reduced bubbling effect.

Abstract: In a particular embodiment, a particulate material includes alumina hydrate. The particulate material has a 500 psi Compaction Volume Ratio of at least about 4.0 cc/cc.

Abstract: The invention relates to a molten ceramic particle, characterized in that it has the following chemical composition in wt % based on oxides and for a total of 100%: 55%<ZrO2+HfO2<70%; 20%<SiO2<30%; 6.5%<MgO<9.5%; Al2O3 in an amount such that the mass ratio MgO/Al2O3 is comprised between 2.4 and 6.6; and less than 0.6% of other oxides.

Abstract: The present invention provides a fused ceramic particle, having the following chemical composition, in percentages by weight based on the oxides and for a total of 100%: 50%<ZrO2+HfO2<70%; 10%<SiO2<30%; 6.5%<MgO<9.5%; Al2O3 in a quantity such that the MgO/Al2O3 weight ratio is in the range 2.4 to 6.6; 0.1%<Y2O3; CeO2<10%; and less than 0.6% of other oxides. Use in particular as milling agents, wet medium dispersion agents, propping agents, heat exchange agents, or for the treatment of surfaces.

Abstract: The present invention provides a fused cast refractory block comprising a mean zirconia (ZrO2+HfO2) content of more than 85% as a percentage by weight based on the oxides, and with a standard deviation ? of the local zirconia content divided by the volume of the block of less than 7.5.