Saint-gobain Centre De Recherches Et D'etudes Europeen

Centre National De La Recherche Scientifique

Universitè De Montpellier

Ecole Nationale Superieure De Chimie De Montpellier

Université Montpellier 2 Sciences Et Techniques

Daniel Urffer

Nabil J Nahas

Samuel Marlin

Stéphane Raffy

Christian Gilbert Guizard

Patricia Andy

Brice Aubert

William Mustel

A filter for the filtration of a fluid, such as a liquid, includes or composed of a support element made of a porous ceramic material, the element having a tubular or parallelepipedal shape delimited by an external surface and including, in its internal portion, a set of adjacent channels with axes parallel to one another and separated from one another by walls of the porous inorganic material, wherein at least a portion of the channels and/or at least a portion of the external surface are covered with a porous separating membrane layer, wherein the layer is made of a material essentially composed of sintered grains of silicon carbide (SiC), and the weight content of elemental oxygen of the layer is less than 0.5%.

Filters comprising oxygen-depleted SiC membranes

Method for manufacturing porous products consisting essentially of titanium suboxide(s) of general formula TiOx, the value of x being between 1.6 and 1.9, the method including a) mixing the raw materials including at least one source of titanium dioxide, a reducing agent comprising carbon, b) forming the product, c) optionally, in particular when organic products are used during step a), thermal treatment under air or an oxidizing atmosphere, d) sintering, for example at a temperature above 1150&#xb0; C. but not exceeding 1430&#xb0; C., under a neutral or reducing atmosphere, in which the source of titanium dioxide consists of at least 55 wt % of anatase.

Porous ceramic products of titanium sub-oxides

The invention relates to a communication device using radio waves with frequencies of 800 MHz to 3 GHz, comprising a ceramic cover at least partially exposed to the external environment of the device, at least one portion of said waves passing therethrough during the use of the device, said cover being at least partially made of a sintered product having a chemical composition such as, by weight and for a total of 100%, 32%&#x2266;ZrO&#x2266;95%, 1%&#x3c;Y2O3+CeO2+ScO+MgO+CaO, 0%&#x2266;CeO&#x2266;26%, 0%&#x2266;MgO&#x2266;43%, 0%&#x2266;CaO&#x2266;37%, 0%&#x2266;SiO&#x2266;41%, 0%&#x2266;AlO&#x2266;55%, 0%&#x2266;TiO&#x2266;30%, 0%&#x2266;lanthanide oxide, except for CeO&#x2266;50% 0% SrO&#x2266;24%, o %&#x2266;iAlON compounds &#x2266;50%, and other compounds &#x2266;15%.

Communication device

An article with a sintered decorative part obtained from a particulate mixture having the following chemical composition:

Colored sintered zirconia

Growing community of inventors

Saint-Saturnin, France

Daniel Urffer