A ceramic matrix composite member including a ceramic matrix composite reinforced by ceramic fiber, includes a body portion and a joint portion joined integrally to the body portion, the joint portion occupying a part of a surface of the ceramic matrix composite member, wherein the body portion includes at least one hole extending toward an inside of the body portion from a boundary surface between the body portion and the joint portion, and the at least one hole is filled with a matrix of the ceramic matrix composite, wherein the body portion includes a first region where a density of the ceramic fiber is relatively high and a second region where the density of the ceramic fiber is lower than that in the first region, and wherein the at least one hole exists so as to cut off a part of bundles of the ceramic fiber in the second region.

A method for repairing a target member including a ceramic matrix composite reinforced by ceramic fiber includes: a removal step of removing at least a part of a surface of the target member; an arrangement step of arranging a green body for repair which includes the ceramic fiber on a portion where the surface is removed in the removal step; an impregnation step of impregnating at least the portion of the target member where the green body for repair is disposed with slurry; and a sintering step of sintering the target member on which the green body for repair is disposed, after the impregnation step.

A method for repairing a target member including a ceramic matrix composite reinforced by ceramic fiber includes: a removal step of removing at least a part of a surface of the target member; an arrangement step of arranging a green body for repair which includes the ceramic fiber on a portion where the surface is removed in the removal step; an impregnation step of impregnating at least the portion of the target member where the green body for repair is disposed with slurry; and a sintering step of sintering the target member on which the green body for repair is disposed, after the impregnation step.

An oxidation protection system disposed on a substrate is provided, which may comprise a base layer comprising a first pre-slurry composition comprising a first phosphate glass composition, and/or a sealing layer comprising a second pre-slurry composition comprising a second phosphate glass composition and a strengthening compound comprising boron nitride, a metal oxide, and/or silicon carbide.

The invention relates to a turbomachine part comprising a substrate consisting of a metal material, or a composite material, and also comprising a layer of a coating for protection against the infiltration of CMAS-type compounds, at least partially covering the surface of the substrate, the protective coating layer comprising a plurality of elementary layers including elementary layers of a first assembly of elementary layers inserted between elementary layers of a second assembly of elementary layers, each elementary layer of the first assembly and each elementary layer of the second assembly comprising an anti-CMAS compound, and each contact zone between an elementary layer of the first assembly and an elementary layer of the second assembly forming an interface conducive to the spreading of cracks along said interface.

The present invention relates to a method for impregnating concrete with a non-aqueous electrolyte characterized in that an electric field is applied between electrodes mounted on the concrete surface and/or embedded in the concrete such that the non-aqueous electrolyte migrates into the concrete. Preferably, lithium ions are dissolved in the non-aqueous electrolyte.

There is provided a functional layer including a layered double hydroxide (LDH). The functional layer includes a first layer with a thickness of 0.10 μm or more, the first layer being composed of fine LDH particles having a diameter of less than 0.05 μm, and a second layer composed of large LDH particles having a mean particle diameter of 0.05 μm or more, the second layer being an outermost layer provided on the first layer.

There is provided a functional layer including a layered double hydroxide (LDH). The functional layer includes a first layer with a thickness of 0.10 μm or more, the first layer being composed of fine LDH particles having a diameter of less than 0.05 μm, and a second layer composed of large LDH particles having a mean particle diameter of 0.05 μm or more, the second layer being an outermost layer provided on the first layer.

The disclosure discloses microbial conductive ceramics and a preparation method and application thereof, and belongs to the technical field of microorganisms and the technical field of semiconductor materials. The disclosure is based on ordinary insulating macroporous ceramics, using the means of cell immobilization and the principle of microbial adsorption, to prepare the microbial conductive ceramics including macroporous ceramics, microbes immobilized on the macroporous ceramics and metal ions adsorbed to the microbes. The microbial conductive ceramics have excellent performance, and the conductivity of the microbial conductive ceramics can reach 2.91×10.sup.6 S/m. At the same time, the cost of the microbial conductive ceramics is low, only 10% of the cost of conductive ceramics with the same conductivity.

The disclosure discloses microbial conductive ceramics and a preparation method and application thereof, and belongs to the technical field of microorganisms and the technical field of semiconductor materials. The disclosure is based on ordinary insulating macroporous ceramics, using the means of cell immobilization and the principle of microbial adsorption, to prepare the microbial conductive ceramics including macroporous ceramics, microbes immobilized on the macroporous ceramics and metal ions adsorbed to the microbes. The microbial conductive ceramics have excellent performance, and the conductivity of the microbial conductive ceramics can reach 2.91×10.sup.6 S/m. At the same time, the cost of the microbial conductive ceramics is low, only 10% of the cost of conductive ceramics with the same conductivity.