The present invention relates to a health artificial pearl and a manufacturing method therefor and, more specifically, to: a health artificial pearl formed by spray-drying and pressure-firing a functional mineral that emits anions and radiates far infrared rays, so as to form a core with high compressive strength, and by coating the surface of the core with an artificial pearl composition, which is nontoxic to the human body; and a manufacturing method therefor. The method for manufacturing a health artificial pearl comprises: (S100) a material pretreatment step of wet-grinding a functional mineral that emits anions and radiates far infrared rays so as to form a wet-ground solution, and spray drying the wet-ground solution so as to prepare a powder for press forming; (S200) a press forming step of injecting, into a press forming apparatus, the powder for press forming so as to form a core, and high-temperature-firing the core; (S300) a core polishing step of polishing the high-temperature-fired core; and (S400) a coating step of coating the polished core with an artificial pearl composition.

A lead-free insulating ceramic coating zinc oxide arrester valve and a method for manufacturing thereof are disclosed. In an embodiment a method includes preparing an initial powder from starting materials with the following mass percentages: ZnO: 86-95%; Bi2O3: 1.0-3.0%; Co3O4: 0.5-1.5%; Mn3O4: 0.2-1.0%; Sb2O3: 3.0-9.0 %; NiO: 0.2-1.0%; and SiO2: 1.0-3.0%, preparing a ceramic coating powder by mixing the initial powder, deionized water and first grinding balls, milling the mixture, and drying and pulverizing the mixture, preparing a ceramic coating slurry by mixing a PVA solution, the ceramic coating powder and second grinding balls and milling the mixture, applying the ceramic coating slurry to a green body, heating and debinding the ceramic coating slurry with the green body thereby forming a resistor element and sintering the resistor element thereby obtaining a zinc oxide surge arrester valve block having a lead-free insulating ceramic coating.

A lead-free insulating ceramic coating zinc oxide arrester valve and a method for manufacturing thereof are disclosed. In an embodiment a method includes preparing an initial powder from starting materials with the following mass percentages: ZnO: 86-95%; Bi.sub.2O.sub.3: 1.0-3.0%; Co.sub.3O.sub.4: 0.5-1.5%; Mn.sub.3O.sub.4: 0.2-1.0%; Sb.sub.2O.sub.3: 3.0-9.0%; NiO: 0.2-1.0%; and SiO.sub.2: 1.0-3.0%, preparing a ceramic coating powder by mixing the initial powder, deionized water and first grinding balls, milling the mixture, and drying and pulverizing the mixture, preparing a ceramic coating slurry by mixing a PVA solution, the ceramic coating powder and second grinding balls and milling the mixture, applying the ceramic coating slurry to a green body, heating and debinding the ceramic coating slurry with the green body thereby forming a resistor element and sintering the resistor element thereby obtaining a zinc oxide surge arrester valve block having a lead-free insulating ceramic coating.

The present invention relates to a health artificial pearl and a manufacturing method therefor and, more specifically, to: a health artificial pearl formed by spray-drying and pressure-firing a functional mineral that emits anions and radiates far infrared rays, so as to form a core with high compressive strength, and by coating the surface of the core with an artificial pearl composition, which is nontoxic to the human body; and a manufacturing method therefor. The method for manufacturing a health artificial pearl comprises: (S100) a material pretreatment step of wet-grinding a functional mineral that emits anions and radiates far infrared rays so as to form a wet-ground solution, and spray drying the wet-ground solution so as to prepare a powder for press forming; (S200) a press forming step of injecting, into a press forming apparatus, the powder for press forming so as to form a core, and high-temperature-firing the core; (S300) a core polishing step of polishing the high-temperature-fired core; and (S400) a coating step of coating the polished core with an artificial pearl composition.

Systems and methods for forming ceramic matrix composite (CMC) components are provided. The CMC component includes a reinforcement material having a plurality of filaments that are at least partially electrically conductive. The plurality of filaments are charged by a charging element with an electric charge of the same sign such that adjacent filaments are in an expanded spatial relationship relative to one another while being coated. While in the expanded spatial relationship, the filaments can also be pulled through a matrix slurry.

A method for protecting a carbon-carbon composite material part from oxidation, the method including applying an impregnation composition comprising at least one metal phosphate to at least one portion of the outer surface of the part; depositing, by a dry deposition process, a solid composition of an oxidation-resistant glass on at least one portion of the outer surface of the part, once the impregnation composition has been applied; and conducting an impregnation heat treatment in order to soften or melt the solid composition deposited by a dry deposition process, to allow the internal porosity of the part to be impregnated with the thus-softened or thus-melted composition, and to form an oxidation-resistant glass in the internal porosity of the part.

A method for protecting a carbon-carbon composite material part from oxidation, the method including applying an impregnation composition comprising at least one metal phosphate to at least one portion of the outer surface of the part; depositing, by a dry deposition process, a solid composition of an oxidation-resistant glass on at least one portion of the outer surface of the part, once the impregnation composition has been applied; and conducting an impregnation heat treatment in order to soften or melt the solid composition deposited by a dry deposition process, to allow the internal porosity of the part to be impregnated with the thus-softened or thus-melted composition, and to form an oxidation-resistant glass in the internal porosity of the part.