Combination of materials for the low temperature triggering...

H - Electricity – 01 – J

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H01J 7/18 (2006.01)

Patent

CA 2244122

A combination of materials is disclosed, comprising a getter alloy and one or more oxides chosen among Ag2O, CuO, MnO2 and Co3O4. To these combinations, a third component, consisting in an alloy rare earths, yttrium, lanthanum or their mixtures with copper, tin or their mixtures, may optionally be added. The combinations of the invention are useful for the preparation of getter devices which can be activated at relatively low temperatures, from about 280 to 500 ~C, while the activation of the getter materials generally requires temperatures of from 350 to 900 ~C. A few getter devices are also disclosed, which contain the combinations of materials of the invention.

Cette invention concerne une combinaison de matières comportant un alliage dégazeur et au moins un oxyde sélectionné dans le groupe constitué par Ag¿2?O, CuO, MnO¿2? et Co¿3?O¿4?. Il est également possible d'ajouter à ces combinaisons, un troisième composant constitué d'un alliage comportant un métal choisi parmi les terres rares, l'yttrium, le lanthane ou des mélanges de ces éléments avec du cuivre, de l'étain ou des mélanges de ces derniers. Les combinaisons de l'invention servent à la préparation de dispositifs de dégazage qui peuvent être activés à des températures relativement basses, comprises entre environ 280 et 500 ·C, alors que l'activation des matériaux de dégazage nécessite généralement des températures comprises entre 350 et 900 ·C. L'invention se rapporte en outre à plusieurs dispositifs de dégazage contenant les combinaisons de matières décrites ci-dessus.

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