Materials systems resistant to penetration of molten salts and may be present within a molten-salt-facing wall of a device for containing a molten salt bath at an elevated temperature, and molten-salt-facing walls and devices formed by such materials systems. A first layer of such a system defines an outer surface for direct contact with the molten salt bath, and resists erosion and corrosion and is penetrable by the molten salt at the elevated temperature. A second layer is located adjacent to the first layer and exhibits little or no wetting by the molten salt so that at least a portion of a thickness of the second layer is not penetrable by the molten salt. A third layer is located adjacent to the second layer and is porous and exhibits a low thermal conductivity at the elevated temperature.

A method for manufacturing a part made of composite material in which an adhesion promoter is grafted to a coating present on the fibre surface as well as to a ceramic precursor resin. Afterwards, a ceramic matrix phase is formed in the porosity of the fibre preform by pyrolysis of the polymerised resin.

A method for manufacturing a part made of composite material includes forming a ceramic matrix phase in pores of a fibrous preform by pyrolysis of a cross-linked copolymer ceramic precursor, the cross-linked copolymer including a first precursor macromolecular chain of a first ceramic having free carbon, and a second precursor macromolecular chain of a second ceramic having free silicon, the first macromolecular chain being bonded to the second macromolecular chain by cross-linking bridges including a bonding structure of formula *.sup.1—X—*.sup.2; in this formula, X designates boron or aluminium, -*.sup.1 designates the bond to the first macromolecular chain and -*.sup.2 the bond to the second macromolecular chain.

A resin bonded super abrasive tool. The tool is manufactured using a liquid 3D light cured solution printer (3D printing which uses a liquid resin super abrasive and secondary fillers). The liquid resin is mixed with effective amounts of the super abrasive material and secondary fillers, and they are co-deposited and cured by printer during the 3D printing process.

Dry prepregs for ceramic matrix composites are described. The dry prepregs comprise a tow or fabric of ceramic fibers infiltrated with preceramic matrix comprising low levels of an aqueous solvent. The preceramic matrix contains an inorganic portion and a binder system. Binder systems comprising a binder and a plasticizer for the binder are described.

The present invention relates to preceramic polymer grafted nanoparticles and as well as methods of making and using same. Advantages of such preceramic polymer grafted nanoparticles include, reduced out gassing, desired morphology control and desirable, distinct rheological properties that are not found in simple mixtures. As a result, Applicants' preceramic polymer grafted nanoparticles can be used to provide significantly improved, items including but not limited to hypersonic vehicles, jets, rockets, mirrors, signal apertures, furnaces, glow plugs, brakes, and armor.

The present application discloses and claims a method to make a flexible ceramic fibers (Flexiramics™) and polymer composites. The resulting composite has an improved mechanical strength (tensile) when compared with the Flexiramics™ respective the nanofibers alone. Additionally a composite has better properties than the polymer alone such as lower fire retardancy, higher thermal conductivity and lower thermal expansion. Several different polymers can be used, both thermosets and thermoplastics. Flexiramics™ has unique physical characteristic and the composite materials can be used for numerous industrial and laboratory applications.

A fiber reinforced composite component may include interleaved textile layers and ceramic particle layers coated with matrix material. The fiber reinforced composite component may be fabricated by forming a fibrous preform and densifying the fibrous preform. The fibrous preform may be fabricated by performing a silicon melt infiltration after the densification process. A plurality of pores defined by the carbon matrix material are infiltrated with a silicon material and the fibrous preform is heated to a melt temperature until a desired percentage (e.g., at least 50%) of the carbon matrix material is converted into silicon carbide or another oxidation resistant material.

Provided are a composite ceramic member and a method for preparation thereof, a vaporization assembly, and an electronic cigarette. The composite ceramic member comprises a first ceramic layer, a second ceramic layer, and a third ceramic layer stacked in sequence; in the first ceramic layer, the second ceramic layer, and the third ceramic layer, the first ceramic layer has the smallest pore size and the highest thermal conductivity, the second ceramic layer has the largest porosity, and the third ceramic layer has the highest compressive strength.

Provided is a compact of a powder satisfying requirements 1 to 3. Requirement 1: |dA(T)/dT| of the powder is 10 ppm/° C. or more at least at −200 to 1,200° C., where A is (a lattice constant of a-axis)/(a lattice constant of c-axis) obtained from X-ray diffractometry. Requirement 2: the powder contains at least one metal or semimetal element, and the element is composed of only an element selected from the group consisting of Li, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, Hf, Ta, W, Re, Au, Hg, Tl, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. Requirement 3: the linear thermal expansion coefficient at −200 to 1,200° C. of the compact is negative at least at one temperature.