PROCESS OF PREPARATION OF the CERAMIC MATERIAL ELECTRICALLY CONDUCTING SiO2/ZrO2/C-GRAPHITE AND CERAMIC MA

Backlog Materiais, Metalurgia Química

PROCESS OF PREPARATION OF the CERAMIC MATERIAL ELECTRICALLY CONDUCTING SiO2/ZrO2/C-GRAPHITE AND CERAMIC MA

NOVELTY – The electrically conducting ceramic material preparation method involves adding 4.3 ml of 3.5 mol/l hydrochloric acid to 76.0 ml of tetraethyl orthosilicate solution and agitating the solution for 3 hours at 333 K. 15 ml of zirconium tetrabutoxide and 3 ml of 3.5 mol/l hydrochloric acid, were added to mixture. 6 g of graphite powder of 99.9% purity is added to mixture and left for 8 hours at room temperature. The solvent is evaporated slowly at 333 K in open container until a gel is formed and remaining solvent is evaporated increasing temperature to 393 k, resulting in a completely dry gel. USE – Method for preparation of electrically conducting ceramic material. DETAILED DESCRIPTION – The dry gel is crushed and left in 1 mol/l nitric acid for 15 hours, followed by washing with deionized water and vacuum drying at 343 k for 2 hours. An INDEPENDENT CLAIM is also included for the electrically conducting ceramic material, which comprises 60% silicon dioxide, 20% zirconium dioxide and 20% graphite or 50% silicon dioxide, 20% zirconium dioxide and 30% graphite. DESCRIPTION OF DRAWING(S) – The drawing shows a schematic view of a copper wire with electrically conducting ceramic material.

Main Application Field

L02 (Refractories, ceramics, cement – includes manufacturing methods, limes, soil preparation for (road) building, magnesias and slags, cements, mortars, concretes, abrasives, thermal or acoustic insulation (non)oxide ceramics and ceramic composites, but not brick making, concrete mixers or casting or potters’ wheels (C04).)

INVENTORS:

LUCHO ALZIRA MARIA SERPA
MARAFON EDUARDO
FRANCISCO MARIA SUZANA PRATAVIERA
LANDERS RICHARD
GUSHIKEM YOSHITAKA

81_CERAMICA

Patent number: BR200506395-A;BR200506395-B1

PATENT STATUS:

GRANTED

FOR ADDITIONAL INFORMATION:

parcerias@inova.unicamp.br

+55 (19) 3521-5207 / 2607

This technology profile has been automatically generated.

COMPARTILHE:

TECNOLOGIAS RELACIONADAS: