The present invention relates to methods for preparing ceramic devices having a surface that has been activated to enhance properties including strength, porosity, and bioactivity. Activation may include forming a gel layer on the surface of a ceramic device using an alkali solution and modifying the surface using a modifying material. The invention further relates to ceramic devices prepared by the methods and methods of using the devices.

The present invention relates to a method of producing a SiCSi composite component. The method includes preparing a first molded body containing SiC particles by a 3D printing method, wherein the first molded body has a first average pore diameter M.sub.1; forming a second molded body, in which the first molded body and a dispersion containing carbon particles are brought into contact so that the pores are impregnated with the carbon particles, wherein the carbon particles have a secondary particle having an average particle diameter M.sub.2, and the carbon particles satisfy the following formula:
M.sub.2M.sub.1/10; and forming a SiCSi composite component by carrying out that the second molded body is impregnated with a metallic si and is reactively sintered; wherein the content of Si is in the range of 5% by mass to 40% by mass in the SiCSi composite component.

An antiballistic armor-plating component, includes a ceramic body made of a material comprising, as percentages by volume, between 35% and 55% of silicon carbide, between 20% and 50% of boron carbide, between 15% and 35% of a metallic silicon phase or of a metallic phase including silicon.

The present invention relates to a laminated member including: a glass member having a linear transmittance at a wavelength of 850 nm of 80% or more; a bonding layer including a resin and lying on the glass member; and a SiSiC member lying on the bonding member, in which the SiSiC member has an average linear expansion coefficient at from 20 C. to 200 C. of from 2.85 ppm/ C. to 4.00 ppm/ C.