A resin-impregnated boron nitride sintered body having superior thermal conductivity and superior strength, and a resin-impregnated boron nitride sintered body having superior conductivity and small anisotropy of thermal conductivity are provided. A resin-impregnated boron nitride sintered body, including: 30 to 90 volume % of a boron nitride sintered body having boron nitride particles bonded three-dimensionally; and 10 to 70 volume % of a resin; wherein the boron nitride sintered body has a porosity of 10 to 70%; the boron nitride particles of the boron nitride sintered body has an average long diameter of 10 m or more; the boron nitride sintered body has a graphitization index by powder X-ray diffractometry is 4.0 or less; and an orientation degree of the boron nitride particles of the boron nitride sintered body by I.O.P is 0.01 to 0.05 or 20 to 100; and a resin-impregnated boron nitride sintered body, including: 30 to 90 volume % of a boron nitride sintered body having boron nitride particles bonded three-dimensionally is provided.

Cementing compositions contain water, a cement and an additive for adjusting thermal conductivity. The additive for adjusting thermal conductivity may be graphite, graphene, aluminum oxide, hematite, copper metal, copper oxide, aluminum, amorphous carbon, gallium metal, iron metal, magnesium oxide, nickel metal, nickel oxide, tin metal, tin oxide, zinc metal or zinc oxide, or combinations thereof. Such compositions may have thermal conductivities exceeding 2 W/mK. Such compositions may be useful in closed loop geothermal completions or for encasing electrical cables.

A process for the preparation of a porous carbon material using an improved amphiphilic species. Also disclosed are a porous carbon material, devices comprising the porous carbon material and use of an amphiphilic compound for the preparation of a porous carbon material. The process for preparing a porous carbon material comprises the process steps: (a) providing a carbon source comprising a first carbon source compound; (b) providing an amphiphilic species comprising a first amphiphilic compound, the first amphiphilic compound comprising two or more adjacent ethylene oxide-based repeating units; (c) contacting the carbon source and the amphiphilic species to obtain a precursor; and (d) heating the precursor to obtain the porous carbon material.

A modification layer on a surface of a ceramic substrate, includes, in parts by mass: 56 to 67.5 parts of silicon dioxide; 12 to 18 parts of aluminum oxide; and 2.8 to 5.5 parts of lithium oxide. In an embodiment, the modification layer further includes, in parts by mass: at least one of 1.8 to 2.8 parts of phosphorus pentoxide; 0.5 to 2.0 parts of calcium oxide; 0.15 to 1.5 parts of magnesium oxide; and 2.5 to 5.25 parts of barium oxide.

A ceramic electronic device includes a dielectric layer and an internal electrode layer that are alternately stacked, wherein the dielectric layer contains yttria-stabilized zirconia, and wherein an arca ratio of grains of the yttria-stabilized zirconia is 1% or more and 15% or less in a cross section of the dielectric layer.

Hydraulically curable inorganic cement composition comprising at least one compound with a water solubility of >10 g/L (at 20 C.), selected from the group consisting of 5-member compounds which have an aromatic nitrogenous heterocyclic ring system that is free of other ring heterocyclic atoms and 6-member compounds which have an aromatic nitrogenous heterocyclic ring system that is free of other ring heteroatoms, and at least one water-dispersible EVA copolymer.

A method of manufacturing a metal-coated member includes: providing a composite ceramic member including a ceramic part, and a connection part connected to the ceramic part; disposing a precious metal layer on a surface region that includes at least a portion of a surface of the ceramic part and a portion of a surface of the connection part, the precious metal layer including a precious metal; and removing at least a portion of the precious metal layer that is on the surface of the ceramic part and delineated by the boundary between the ceramic part and the connection part. The connection part has stronger adhesion to the precious metal than the ceramic part.

A reinforced composite product of concrete (14) reinforced by reinforcement mesh(s) (13, 13) of an aluminium alloy. where calcium hydroxide of the concrete is absent to avoid or reduce corrosion of the aluminium reinforcement by replacing cement with >35% active pozzolana and that the mesh can be made by slit-stretching or by punching a sheet aluminium metal. The aluminium mesh is advantageous for use as reinforcement in various concrete structures in corrosive environment and where traditional steel meshes are used today.

A vaporization core for an electronic vaporization device includes: a porous body; and a heating film arranged on a surface of the porous body. The porous body has at least one unit layer, the at least one unit layer having a liquid storage advantage layer and a liquid locking advantage layer combined with the liquid storage advantage layer. The heating film is combined with a surface of the liquid locking advantage layer and at least partially infiltrates in the liquid locking advantage layer.

Cementing compositions contain water, a cement and an additive for adjusting thermal conductivity. The additive for adjusting thermal conductivity may be graphite, graphene, aluminum oxide, hematite, copper metal, copper oxide, aluminum, amorphous carbon, gallium metal, iron metal, magnesium oxide, nickel metal, nickel oxide, tin metal, tin oxide, zinc metal or zinc oxide, or combinations thereof. Such compositions may have thermal conductivities exceeding 2 W/mK. Such compositions may be useful in closed loop geothermal completions or for encasing electrical cables.