Abstract:
A particulate material having a body including a first phase having at least about 70 wt% alumina for a total weight of the first phase, and a second phase comprising phosphorus, wherein the body includes at least about 0.1 wt% of the second phase for the total weight of the body, and wherein the second phase has an average grain size of not greater than about 1 micron.
Abstract:
Ceramic particulate material includes alumina particles, the particles having a specific surface area (SSA) not less than 15 m2/g and not greater that 75m2/g and a sphericity quantified by at least one of (i) a mean roundness not less than 0.710 as measured by Roundness Correlation Image Analysis, and (ii) a concavity less than 20% wherein concavity is the percent of alumina particles based on a sample of at least 100 particles, which have a concave outer peripheral portion that extends along a distance not less that 10% of d50 bij TEM inspection, the concave outer peripheral portion having a negative radius of curvature as viewed from an interior of the particle. Also claimed is a method for forming said ceramic particulare material comprising a hot isostatic pressing of loose powder in order to effect phase transformation of the loose powder.
Abstract:
A method of forming a shaped abrasive particle includes extruding a mixture into an opening in a screen within an application zone and translating the screen and belt to a release zone and separating the screen and belt to form a precursor shaped abrasive particle on the belt, wherein the screen and belt are separated at a release angle of at least about 15° and not greater than about 45°, wherein the release angle is defined as an angle between a surface of the screen and a surface of the belt.
Abstract:
An abrasive article includes a shaped abrasive particle including a body having a first height (h1) at a first end of the body defining a corner between an upper surface, a first side surface, and a second side surface, and a second height (h2) at a second end of the body opposite the first end defining an edge between the upper surface and a third side surface, wherein the average difference in height between the first height and the second height is at least about 50 microns. The body also includes a bottom surface defining a bottom area (Ab) and a cross-sectional midpoint area (Am) defining an area of a plane perpendicular to the bottom area and extending through a midpoint of the particle, the body has an area ratio of bottom area to midpoint area (Ab/Am) of not greater than about 6.
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 shaped abrasive particle including a body having a length (l) a width (w) and a height (hi) wherein the height is at least about 28% of the width and a percent flashing (f) of at least about 10% and not greater than about 45% for a total side area of the body.
Abstract:
El material en partículas cerámico incluye partículas de alúmina, las partículas teniendo un área de superficie específica (SSA) no menor de 15 m2/g y no mayor de 75 m2/g, y una esfericidad cuantificada por cuando menos una de (i) una redondez media no menor de 0.710 medida por análisis de imágenes por correlación de redondez, y (ii) una concavidad menor de 20%, en donde la concavidad es el por ciento de partículas de alúmina basado en una muestra de por lo menos 100 partículas, las cuales tienen una porción periférica exterior cóncava que se extiende a lo largo de una distancia no menor de 10% de d50 por inspección por TEM, la porción periférica exterior cóncava teniendo un radio de curvatura negativo, según se observa desde un interior de la partícula.