Method of Fabricating High-Permittivity Dielectric Material

• Main Authors: Hill, Curtis W, Rolin, Terry D, Tucker, Dennis Stephen
• Format: Patent
• Language: English
• Published: 03.10.2019
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF NATURAL STONE

Nano-sized powder particles of barium titanate are coated with silica yielding silica-coated particles having a silica coating thickness in a range of 2-5 nanometers. The silica-coated particles are sintered by application of pressure in a range of 35-50 megapascals and temperature in a range of 950-1050° C. The sintered quantity of material is cooled at a cooling rate in a range of 1-3° C. per minute at least until the temperature thereof is less than 120° C.