A thermocouple is provided that can measure a temperature of a material in a high temperature range of 1500° C. or higher with high accuracy at low cost. The thermocouple includes a first conductive member and a second conductive member. The first conductive member and the second conductive member are connected to each other to form a temperature sensing junction. The first conductive member contains a first conductive ceramic containing zirconium diboride and/or titanium diboride silicon carbide, a sintering agent, and unavoidable impurities. In the first conductive ceramic, the content of the silicon carbide is 5 mass % or more and 40 mass % or less. The second conductive member contains a second conductive ceramic containing boron carbide as a main constituent material.

A vacuum additive manufacturing process enabling obtaining, through a single-step process, the synthesis, controlled densification and shaping of non-oxide materials as well as composite materials containing non-oxide as matrices or reinforcements, in porous as well as fully dense ceramic components, with a tailored nano-micro-macrostructure.

A method for forming a self-healing ceramic matrix composite (CMC) component includes depositing a first self-healing particulate material in a first region of a CMC preform of the CMC component and depositing a second self-healing particulate material having a different chemical composition than the first self-healing particulate material in a second region of the CMC preform distinct from the first region.

The invention relates to hydrocarbon conversion, to equipment and materials useful for hydrocarbon conversion, and to processes for carrying out hydrocarbon conversion, e.g., hydrocarbon pyrolysis processes. The hydrocarbon conversion is carried out in a reactor which includes at least one channeled member that comprises refractory and has an open frontal area≤55%. The refractory can include non-oxide ceramic.

The present disclosure provides a method of making a non-oxide ceramic part. The method includes obtaining a photopolymerizable slurry; selectively curing the photopolymerizable slurry to obtain a gelled article; drying the gelled article to form an aerogel article or a xerogel article; heat treating the aerogel article or the xerogel article to form a porous ceramic article; and sintering the porous ceramic article to obtain a sintered ceramic article. The photopolymerizable slurry includes non-oxide ceramic particles; at least one radiation curable monomer; a solvent; a photoinitiator; an inhibitor; and at least one sintering aid. Further, aerogels, xerogels, porous ceramic articles, and non-oxide ceramic articles are provided. In addition, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article; and generating, with the manufacturing device by an additive manufacturing process, the article based on the digital object. A system is also provided, including a display that displays a 3D model of an article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an article.

A method for forming a self-healing ceramic matrix composite (CMC) component includes depositing a first self-healing particulate material in a first region of a CMC preform of the CMC component and depositing a second self-healing particulate material having a different chemical composition than the first self-healing particulate material in a second region of the CMC preform distinct from the first region.

In order to provide a zirconium boride that provides high caloric value at the time of its combustion with a compound having radicals such as perchlorate and can combust in a short period of time, while providing high physical stability, an amount of radical derived from lattice defect detected by ESR spectroscopy, is set to 0.1×10.sup.15 spin/mg or more.

A method of making a fiber reinforced composite includes: infiltrating a preform having a perimeter with an electrophoretic gel; adding nanoparticles to wells located in the electrophoretic gel outside the preform perimeter; introducing the nanoparticles to the preform using gel electrophoresis; removing the electrophoretic gel to result in a preform having embedded nanoparticles; and infiltrating the preform having embedded nanoparticles with a matrix material or a matrix material precursor.

A void filler material includes a ceramic rod and a fibrous overwrap. The void filler material may be used in a ceramic matrix composite. The method of making the ceramic matrix composite includes inserting the void filler material in voids of a preform and depositing a ceramic matrix on the preform and the void filler material using chemical vapor infiltration.

Disclosed is a method of making high temperature fiber including chemically bonding high temperature material to a fiber template at a first temperature to form a precursor fiber and processing the precursor fiber at a second temperature to form the high temperature fiber. The first temperature does not equal the second temperature. Also disclosed are high temperature fibers made by the method.