Pre-ceramic particle solutions can prepared by a Coordinated-PDC process, a Direct-PDC process or a Coordinated-Direct-PDC process. The pre-ceramic particle solution includes a polymer selected from the group consisting of (i) an organic polymer including a metal or metalloid cation, (ii) a first organometallic polymer and (iii) a second organometallic polymer including a metal or metalloid cation different from a metal in the second organometallic polymer, a plurality of particles selected from the group consisting of (a) a ceramic fuel particle and (b) a moderator particle, a dispersant, and a polymerization initiator. The pre-ceramic particle solution can be supplied to an additive manufacturing process, such as digital light projection, and made into a structure (which is pre-ceramic particle green body) that can then be debinded to form a polymer-derived ceramic sintered body. In some embodiments, the polymer-derived ceramic sintered body is a component or structure for fission reactors.

This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.

A method of fabricating a ceramic material, the method including forming a ceramic material by performing a first chemical reaction at least between a first powder of an intermetallic compound and a reactive gas phase, a liquid phase being present around the grains of the first powder during the first chemical reaction, the liquid gas phase being obtained from a second powder of a metallic compound by melting the second powder or as a result of a second chemical reaction between at least one element of the first powder and at least one metallic element of the second powder, a working temperature being imposed during the formation of the ceramic material, which temperature is low enough to avoid melting the first powder.

To provide a dielectric porcelain composition and an electronic component that demonstrate ferroelectricity. A dielectric porcelain composition that is characterized by having a perovskite-type oxynitride as a principal component and by including a polycrystalline body that demonstrates ferroelectricity.

Disclosed herein are embodiments of methods, devices, and assemblies for processing feedstock materials using microwave plasma processing. Specifically, the feedstock materials disclosed herein pertains to unique powder feedstocks such as Tantalum, Yttrium Stabilized Zirconia, Aluminum, water atomized alloys, Rhenium, Tungsten, and Molybdenum. Microwave plasma processing can be used to spheroidize and remove contaminants. Advantageously, microwave plasma processed feedstock can be used in various applications such as additive manufacturing or powdered metallurgy (PM) applications that require high powder flowability.

A sintered material has 3 vol % to 80 vol % of cBN grains and a binder. The binder contains: one or more types selected from the group consisting of one or more types of compounds composed of one or more types of first elements selected from the group consisting of a group 4 element, a group 5 element and a group 6 element in the periodic table, Al and Si and one or more types of second elements selected from the group consisting of C, N, O and B, and a solid solution of these compounds; and one or more types of metallic elements selected from the group consisting of Li, Ca, Na, Sr, Ba and Be. The binder contains the one or more types of metallic elements in an amount of 0.001 mass % to 0.5 mass % or less in total, and oxygen in an amount of 0.1 mass % to 10.0 mass %.

A three-dimensional shaped article production method includes a layer formation step of forming a layer by ejecting a composition containing particles and a solvent in a predetermined pattern using a dispenser, a measurement step of determining the height of the layer, and a bonding step of subjecting a stacked body including a plurality of layers to a bonding treatment for bonding the particles, wherein when n represents an arbitrary integer of 1 or more, by selecting driving waveform data for the dispenser when ejecting the composition from a data group including a plurality of pieces of driving waveform data based on the information of the height of the layer in the n-th position (n-th layer) determined in the measurement step, the ejection amount of the composition per unit area onto the n-th layer in the layer formation step of forming the layer in the (n+1)th position ((n+1)th layer) is adjusted.

A polycrystalline dielectric thin film and capacitor element has a small dielectric loss tan . The polycrystalline dielectric thin film, in which the main composition is a perovskite oxynitride. The perovskite oxynitride is expressed by the compositional formula AaBbOoNn (a+b+o+n=5), where a/b>1 and n0.7.

An object shaping method includes a step of forming a powder layer using first powder, a step of placing second powder having an average particle diameter smaller than an average particle diameter of the first powder at a part of a region of the powder layer, and a first heating step of heating the powder layer in which the second powder is placed. The average particle diameter is equal to or larger than 1 nm and equal to or smaller than 500 nm, and the first heating step performs heating the powder layer at a temperature at which particles contained in the second powder are sintered or melted.

The present invention relates to a suspension comprising 50-95% by weight of the total suspension (w/w) of at least one metallic material and/or ceramic material and/or polymeric material and/or solid carbon containing material; and at least 5% by weight of the total suspension of one or more fatty acids or derivatives thereof. In addition, the invention relates to uses of such suspension in 3D printing processes.