Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Arkema France

Université De Savoie

Stéphane Cros

Anthony Bonnet

Manuel Hidalgo

Arnaud Leroy

Jean-Paul Garandet

Christine Walsh

Nicole Alberola

Arnaud Morlier

Muriel Firon

Fabien Jaubert

Philippe Trouslard

Jean-Philippe Fauvarque

Florian Teyssier

Patrick Boldrighini

Method for estimating a gas flow in an enclosure maintained in a low pressure regimen relative to the gas, including:  

Device and method for estimating a flow of gas in an enclosure maintained at reduced pressure in relation to the gas

A cell for measuring the permeation of a target gas through a sample includes upstream and downstream chambers connected by an opening, a primary seal in contact with the bottom of the upstream chamber and surrounding the opening, and a removable sample holder and means for assembling the sample holder in the cell. Upper and lower frames included in the sample holder are each provided with a through opening. The sample holder includes means for assembling the sample in the sample holder and a first seal flush with the front surface of the lower frame, and surrounding the through opening of the lower frame. In the lower frame of the sample holder, a second seal is flush with the front surface of the lower frame, surrounding the through opening of the lower frame, and being surrounded with the first seal, and a second channel emerging between the two secondary seals.

Sample holder and associated permeation device

The invention relates to a method for measuring permeation of gases through a material comprising the following steps:

Method and device for measuring permeation by mass spectrometry

A multilayer structure including a substrate and a first stack of a layer of SiOand a layer of material of the SiONHtype positioned between the substrate and the layer of SiO, in which the layer of SiOand the layer of material of the SiONHtype have thicknesses (e, e) such that the thickness of the layer of SiOis less than or equal to 60 nm, the thickness of the layer of material of the SiONHtype (e) is more than twice the thickness (e) of the layer of SiO, and the sum of the thicknesses of the layer of SiOand of the layer of material of the SiONHtype is between 100 nm and 500 nm, and in which z is strictly less than the ratio (x+y)/5, and advantageously z is strictly less than the ratio (x+y)/10.

Multilayer structure offering improved impermeability to gases

An encapsulation device including two casings made of a flexible polymer material, each delimiting a sealed space, and at least one hydrophobic material filling each of the casings, the casings being stacked and sealingly interconnected at peripheral edges thereof, a sealed space then being defined between the two casings for receiving a device to be encapsulated.

Encapsulation device having improved sealing

The invention relates to a method for measuring gases permeation through a material (M), comprising the steps of: The invention further relates to a device for implementing such a method, and a method for using this device.

Method and device for measurement of permeation

Growing community of inventors

Chambery, France

Stéphane Cros