The ceramic sintered body contains Zr, Al, Y, and Mg. A Zr content is 7.5 mass % or more and 23.5 mass % or less in terms of ZrO.sub.2. An Al content is 74.9 mass % or more and 91.8 mass % or less in terms of Al.sub.2O.sub.3. A Y content is 0.41 mass % or more and 1.58 mass % or less in terms of Y.sub.2O.sub.3. A Mg content is 0.10 mass % or more and 0.80 mass % or less in terms of MgO. A ZrO.sub.2 crystal phase as a crystal phase has a monoclinic phase and a tetragonal phase as crystal structures. When a thermal aging treatment is performed for 100 hours in an environment of 180 degrees C., a ratio of a peak intensity of the monoclinic phase to a sum of peak intensities of the monoclinic phase and the tetragonal phase is 15% or less in the X-ray diffraction pattern.

Grains for the production of a sintered refractory product, a batch for the production of a sintered refractory product, a process for the production of a sintered refractory product and a sintered refractory product

A dielectric composition includes a main phase and a Ca—Si—P—O segregation phase. The main phase includes a main component expressed by ABO.sub.3. “A” includes at least one selected from calcium and strontium. “B” includes at least one selected from zirconium, titanium, hafnium, and manganese. The Ca—Si—P—O segregation phase includes at least calcium, silicon, and phosphorus.

A dielectric composition includes a main phase and a Ca—Si—P—O segregation phase. The main phase includes a main component expressed by ABO.sub.3. “A” includes at least one selected from calcium and strontium. “B” includes at least one selected from zirconium, titanium, hafnium, and manganese. The Ca—Si—P—O segregation phase includes at least calcium, silicon, and phosphorus.

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.

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.

The present invention concerns the field of refining metal melts or slags and provides in particular a reactive material based on calcium aluminate and carbon, its process of preparation and various methods for refining metal melts using the same.

The present invention concerns the field of refining metal melts or slags and provides in particular a reactive material based on calcium aluminate and carbon, its process of preparation and various methods for refining metal melts using the same.

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.

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.