An abrasive particle having a body including a first major surface, a second major surface opposite the first major surface, and a side surface extending between the first major surface and the second major surface, such that a majority of the side surface comprises a plurality of microridges.

A ceramic and a preparation method therefor are provided. The ceramic includes a zirconia matrix, and an additive dispersed inside and on an outer surface of the zirconia matrix. The additive is an oxide including elements A and B, where A is selected from at least one of Ca, Sr, Ba, Y, and La, and B is selected from at least one of Cr, Mn, Fe, Co, and Ni.

A translucent in-vivo indwelling device with a translucent region including a rare earth doped fluorapatite.

There is provided a ferrite powder for bonded magnets capable of producing ferrite bonded magnets with high BH.sub.max, excellent in MFR when converted to a compound, with high p-iHc, wherein an average particle size of particles obtained by a dry laser diffraction measurement is 5 μm or less, a specific surface area is 1.90 m.sup.2/g or more and less than 3.00 m.sup.2/g, a compression density is 3.40 g/cm.sup.3 or more and less than 3.73 g/cm.sup.3, and a compressed molding has a coercive force of 2800 Oe or more and less than 3250 Oe.

A multilayer ceramic capacitor that includes a laminated body of multiple dielectric layers and internal electrodes laminated alternately therewith. The dielectric layers contain Ba, Sr, Ti, Ca, Zr, Mg, and R, where R represents at least one element of Y, La, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb. When Ti is 100 parts by mol, the dielectric layers contain Sr at 0.5 to 3.0 parts by mol; Ca at 3 to 15 parts by mol; Sr at 0.05 to 3.0 parts by mol; Mg at 0.01 to 0.0 9 parts by mol; and R at 2.5 to 8.4 parts by mol.

Green ceramic batch mixtures include: at least one inorganic batch component, preferably cordierite; at least one binder, preferably polyisoprene, poly(vinyl formal), poly(vinyl methyl ether), polybutadiene carboxy terminated; and an inverse emulsion having a continuous phase, an aqueous dispersed phase, and at least one emulsifier, preferably at least one functionalized silicone compound having at least one functional group chosen from a hydroxyl group, a carboxyl group, hydroxyl-terminated ethylene oxide groups.

A piezoelectric material contains: a first component which is a rhombohedral crystal in a single composition, has a Curie temperature Tc1, and is a lead-free-system composite oxide having a perovskite-type structure; a second component which is a crystal other than a rhombohedral crystal in a single composition, has a Curie temperature Tc2 higher than Tc1, and is a lead-free-system composite oxide having a perovskite-type structure; and a third component which is a rhombohedral crystal in a single composition, has a Curie temperature Tc3 equal to or higher than Tc2, and is a lead-free-system composite oxide that has a perovskite-type structure and is different from the first component. When a molar ratio of the third component to the sum of the first component and the third component is α and α×Tc3+(1−α)×Tc1 is Tc4, |Tc4−Tc2| is 50° C. or lower.

Particular aspects of the present disclosure provide bio-resorbable and biocompatible compositions for bioengineering, restoring, or regenerating tissue or bone. In one embodiment, a biocompatible composition includes a three-dimensional porous or non-porous scaffold material comprising a calcium phosphate-based ceramic having at least one dopant therein selected from metal ion dopants or metal oxide dopants. The composition is sufficiently biocompatible to provide for a cell or tissue scaffold, and resorbable at a controlled resorption rate for controlled strength loss under body, body fluid or simulated body fluid conditions.

A scintillation crystal can include Ln.sub.(1-y)RE.sub.yX.sub.3, wherein Ln represents a rare earth element, RE represents a different rare earth element, y has a value in a range of 0 to 1, and X represents a halogen. In an embodiment, RE is Ce, and the scintillation crystal is doped with Sr, Ba, or a mixture thereof at a concentration of at least approximately 0.0002 wt. %. In another embodiment, the scintillation crystal can have unexpectedly improved linearity and unexpectedly improved energy resolution properties. In a further embodiment, a radiation detection system can include the scintillation crystal, a photosensor, and an electronics device. Such a radiation detection system can be useful in a variety of radiation imaging applications.

A method to form a hole in a ceramic matrix composite component may be provided. A monolithic rod may be inserted into a porous ceramic preform. The ceramic preform may be formed into a ceramic matrix composite body that includes the monolithic rod. A portion of the monolithic rod may be removed, leaving a remaining portion in the ceramic matrix composite body. The remaining portion may include walls that define the opening in the ceramic matrix composite body. Alternatively or in addition, a ceramic matrix composite component may be provided. The ceramic matrix composite component may comprise a ceramic matrix composite body that includes a portion of a monolithic rod. The portion of the monolithic rod forms a lining around a hole passing partly or entirely through a length of the monolithic rod.