A method for masking the appearance of a support structure underlying a highly translucent ceramic dental restoration is provided. The porous form of a zirconia ceramic dental restoration is treated with a liquid masking composition comprising 0.4 wt % to 50 wt % of one or more masking agents. The masking composition is applied to the internal surface of a restoration and a region of the facial surface of the restoration that is opposite the internal surface. After application of the masking compositions, treated zirconia restoration is sintered to greater than 98% theoretical density.

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.

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.

Brake disks with integrated heat sink are provided. Brake disk includes a fiber-reinforced composite material and an encapsulated heat sink material impregnated into the fiber-reinforced composite material. The encapsulated heat sink material comprises a heat sink material encapsulated within a silicon-containing encapsulation layer. Methods for manufacturing the brake disk with integrated heat sink and methods for producing the encapsulated heat sink material are also provided.

Brake disks with integrated heat sink are provided. Brake disk includes a fiber-reinforced composite material and an encapsulated heat sink material impregnated into the fiber-reinforced composite material. The encapsulated heat sink material comprises a heat sink material encapsulated within a silicon-containing encapsulation layer. Methods for manufacturing the brake disk with integrated heat sink and methods for producing the encapsulated heat sink material are also provided.

A method for producing plated-through holes in printed circuit boards and to printed circuit boards produced in this manner.

A method for producing plated-through holes in printed circuit boards and to printed circuit boards produced in this manner.

An Aluminum nitride ceramic and preparation method thereof. The aluminum nitride ceramic comprises a porous aluminum nitride matrix. A ferrite is loaded on the pore surface of the porous aluminum nitride matrix; and nano nickel particles are loaded on the surface of the ferrite. The preparation method of the aluminum nitride ceramic comprises steps: sintering the aluminum nitride ceramic by pressureless sintering method, depositing the ferrite on pore surface of porous aluminum nitride matrix by hydrothermal method, and loading nano nickel particles on the surface of the ferrite by reduction method. A micro-reactor is provided. So that the technical problems: the preheating time of the micro-reactor prepared is too long, nickel particles fall off from the surface of matrix, and nano nickel particles grow up due to quick and direct temperature rise can be solved.

An Aluminum nitride ceramic and preparation method thereof. The aluminum nitride ceramic comprises a porous aluminum nitride matrix. A ferrite is loaded on the pore surface of the porous aluminum nitride matrix; and nano nickel particles are loaded on the surface of the ferrite. The preparation method of the aluminum nitride ceramic comprises steps: sintering the aluminum nitride ceramic by pressureless sintering method, depositing the ferrite on pore surface of porous aluminum nitride matrix by hydrothermal method, and loading nano nickel particles on the surface of the ferrite by reduction method. A micro-reactor is provided. So that the technical problems: the preheating time of the micro-reactor prepared is too long, nickel particles fall off from the surface of matrix, and nano nickel particles grow up due to quick and direct temperature rise can be solved.

[Problem]

To provide a dental porcelain paste that can maintain a constant paste property even during long-term storage, and that hardly generates carbonization and bubbles during firing even in the case of containing organic components.

[Solution]

To provide a dental porcelain paste for preparing a dental prosthesis device, comprising (a) base material glass having an average particle diameter D50 of 1 to 20 ?m, (b) hydrophobized fine particle silica having an average primary particle diameter of 1 to 50 nm, (c) organic solvent having a boiling point of 100 to 300? C., and (d) inorganic salt.