Electricite De France

Siniat

Bernard Yrieix

Paul Jallon

Thierry Duforestel

Benoit Morel

Pierre-Henri Milleville

Lionel Flandin

Genevieve Foray

Bertrand Van De Moortele

Diane De Cacqueray

Agnes Bogner

Christophe Blanc

Benoît Morel

Geneviève Foray

Geert Houvenaghel

Emmanuelle Pons

Emilie Planes

Corine Bas

Florence Dubelley

Lionel Brice Bourbon

Mathilde Colmet Daage

The invention relates in particular to a solid metallic component. This component () is particularly notable in that it comprises a core () and an external shell () which surrounds said core () in all directions, this core () and this shell () being made of different grades of steel, the steel of said core () having martensite and bainite critical cooling rates lower than those of the steel or steels of said shell ().

Solid metallic component and method for producing same

The present invention relates to a solid thermally insulating material, essentially free of phyllosilicates, comprising (a) from 70 to 98% by volume of hydrophobic silica aerogel particles having an intrinsic density between 110 and 210 kg/m, (b) from 0.3 to 12% by volume of an organic binder formed by at least one organic polymer (b1) and at least one surfactant (b2), or by an amphiphilic organic polymer (b3), these volume fractions being determined by image analysis on thin sections of the solid material and being given relative to the total volume of the material, the aerogel particles having a particle size distribution that has at least two maxima, with a first maximum corresponding to an equivalent diameter (d) of less than 200 &#x3bc;m, preferably between 25 &#x3bc;m and 150 &#x3bc;m, and a second maximum corresponding to an equivalent diameter (D) between 400 &#x3bc;m and 10 mm, preferably between 500 &#x3bc;m and 5 mm. It also relates to a thermally insulating product containing at least one layer of this material.

Aerogel-based material that is super-insulating at atmospheric pressure

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Moret sur Loing, France

Bernard Yrieix