One embodiment of the present invention provides a polymeric ammunition cartridge and methods of making and using the same. The cartridge includes a substantially cylindrical insert connected to a substantially cylindrical polymeric middle body. The substantially cylindrical insert includes a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface, a primer recess in the top surface that extends toward the bottom surface, a primer flash hole positioned in the primer recess to extend through the bottom surface, and a flange that extends circumferentially about an outer edge of the top surface. The substantially cylindrical polymeric middle body includes a substantially cylindrical polymeric bullet-end and a substantially cylindrical polymeric coupling end connected by a powder chamber, wherein the substantially cylindrical polymeric coupling end extends over the substantially cylindrical coupling element and covers a circumferential surface of the primer flash hole.

A ceramic composition in one embodiment contains, relative to 100 parts by mass of diopside crystal powder, 0.3 to 1.5 parts by mass of a Li component in terms of an oxide thereof and 0.1 to 1 part by mass of a B component in terms of an oxide thereof. In this embodiment, the content of the Li component in terms of an oxide thereof is larger than the content of the B component in terms of an oxide thereof. In this embodiment, a total content of the Li component and the B component is 2.25 parts by mass or less in terms of oxides thereof.

Articles of manufacture such as ceramic cores and cast metal turbomachinery components are disclosed herein, as well as methods of preparing such articles of manufacture. The articles and methods of manufacture are directed to improving the production and performance of internal combustion engines.

The ceramic sintered body of the present disclosure has yttrium oxide as a main component and contains yttrium silicate, and a ratio (I.sub.1/I.sub.0) of a maximum peak intensity I.sub.1 of yttrium silicate having a diffraction angle 2θ of 30° to 32° with respect to a maximum intensity Io of yttrium oxide having a diffraction angle 2θ of 28° to 30°, which is obtained by an X-ray diffraction method, is 0.03 or more and 0.12 or less. The member for the plasma processing apparatus is made of the ceramic sintered body, its inside is a cylindrical body which serves as a flow path for a plasma generating gas, and an inner peripheral surface of the cylindrical body contains a larger amount of yttrium silicate than an outer peripheral surface thereof.

The present invention relates to a feedstock for a Injection Molding Process, consisting of sinterable particles P made from a metal, a metal alloy, a cermet, a ceramic material, a glass, or a mixture of any of these; and a binder composition B, the binder composition B comprising a binder polymer B1, a polymeric compatibilizer B2, and optionally a release agent B3, and a MIM manufacturing process using the same.

A process for manufacturing a composite part includes arranging a fibrous preform in a mold including an impregnation chamber which includes in its lower part a filter by making a first face of the preform rest on the filter, the impregnation chamber being closed by a flexible membrane placed opposite a second face of the preform, the membrane separating the impregnation chamber from a compaction chamber. The process further includes injecting a compression fluid into the compaction chamber so as to apply a first pressure on the membrane and injecting a slurry including ceramic particles into the impregnation chamber with a second pressure while maintaining the injection of the compression fluid, the second injection pressure of the slurry being lower than the first pressure on the membrane.

One embodiment of the present invention provides a polymeric ammunition cartridge and methods of making and using the same. The cartridge includes a substantially cylindrical insert connected to a substantially cylindrical polymeric middle body. The substantially cylindrical insert includes a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface, a primer recess in the top surface that extends toward the bottom surface, a primer flash hole positioned in the primer recess to extend through the bottom surface, and a flange that extends circumferentially about an outer edge of the top surface. The substantially cylindrical polymeric middle body includes a substantially cylindrical polymeric bullet-end and a substantially cylindrical polymeric coupling end connected by a powder chamber, wherein the substantially cylindrical polymeric coupling end extends over the substantially cylindrical coupling element and covers a circumferential surface of the primer flash hole.

The present disclosure relates to a phosphor ceramic comprising a plurality of luminescence conversion materials, wherein a luminescence conversion material serves as a matrix material for the others.

A method for producing, by a metal powder injection moulding (MIM) technique, a part formed of at least one metal and/or at least one metal alloy including at least one internal cavity. A green core of a mixture of at least one powder of at least one ceramic and of a thermoplastic binder is used.

The present invention relates to a paste-type composition for a fused deposition modeling (FDM) 3D printer comprising: a ceramic powder including CaO and SiO.sub.2; and a binder solution, wherein the composition may be injected into the FDM 3D printer in the form of a paste to rapidly manufacture a molded article without a melting process and may precisely implement a variety of geometries to be utilized as a biological replacement for medical use.