Saint-Gobain Centre De Recherches Et D'etudes Europeen

Franceline Villermaux

Christian Claude His

Guillaume Belly

Thibault Champion

Thibault Pierre Paul Champion

Matteo Scalabrino

Nicolas Raffin

Alexane Margossian

Caroline Tardivat

Emmanuel Mercier

Samuel Prigent

Michel Dussaulx

Yves Boussant-roux

Julien Fourcade

Nadia Frederich

C Bat G La Chevalière Tardivat

A sintered material exhibiting the following chemical composition, as percentages by weight: iron oxide(s), expressed in the FeOform, &#x2265;85%, CaO: 0.1%-6%, SiO: 0.1%-6%, 0.05% &#x2264;TiO, 0&#x2264;AlO, TiO+AlO&#x2264;3%, and constituents other than iron oxides, CaO, SiO, TiOand AlO: &#x2264;5%. The CaO/SiOratio by weight is between 0.2 and 7. The TiO/CaO ratio by weight is between 0.2 and 1.5.

Sintered product with high iron oxide content

A device having a first part shrink-fitted with a first shrink ring, the first shrink ring being shrink-fitted with a second shrink ring exhibiting a lower thermal expansion coefficient than a thermal expansion coefficient of the first shrink ring.

Joining device

A device including a first part made of ceramic material shrink fitted with a first shrink ring, in which an edge of an axial end of a cylindrical portion of the first part to which the first shrink ring is fitted and an edge of an axial end of the first shrink ring belong to one and the same transverse plane.

Flush joint

A device including a first part having a substrate made of a material based on a silicon compound, a coating made of a coating material having a ceramic oxide, a transition layer having silica extending between the substrate and the coating, the transition layer exhibiting a thickness of less than 10 &#x3bc;m, and a first shrink ring and/or a layer made of a compliant material having an alloy with at least two materials selected from silver, gold and palladium, the coating defining at least a portion of the interface between the first part, and the first shrink ring and/or the layer made of a compliant material.

Coated ceramic part

A device including a first member joined to a second member, the joining being carried out via a compliant material having an alloy with at least two materials selected from silver, gold, and palladium, the second member being a shrink ring of the first member.

Compliant material

A method of manufacturing a porous ceramic part, comprising the following steps in succession:

Method of obtaining porous ceramics

A powder including: (a) more than 92% of zircon particles; (b) 1% to 2% of silica particles having a size less than 50 microns; (c) 0.3% to 5% of particles comprising one, two, or three oxides selected from CaO, MgO, and YO; (d) less than 1% of particles comprising other oxides; the powder also being such that it includes: more than 5% of zircon aggregate particles having a size greater than 1 mm; and 8% to 20% of zircon matrix particles having a size less than 15 &#x3bc;m and including, for more than 95% of the weight thereof, a monoclinic phase.

Zirconia powder

The invention relates to a porous, fired ceramic foam having a total porosity of between 50 and 92% and an intergranular porosity of at least 5%. In particular, the invention relates to a recrystallised silicon carbide foam.

Porous, fired ceramic foam

Porous ceramic part comprising a porous ceramic foam having a total porosity of between 50 and 92% and an intergranular porosity of at least 5%, walls of at least some of the cells of the ceramic foam being at least partly covered with an impregnation material. The invention relates in particular to a recrystallized silicon carbide foam impregnated with silicon.

Growing community of inventors

Avignon, France

Franceline Villermaux