Getter devices containing a combination of getter materials

摘要

A getter device containing a combination of getter materials is described. The device has a mixture of cerium oxide, copper oxide and metallic palladium for the removal of hydrogen and carbon monoxide in vacuum applications, particularly suitable to be used in vacuum insulation applications. This combination of getter materials is preferably added to powders of other getter materials such as alkali metals hydroxides and desiccant materials that are effective for maintaining the vacuum in thermal insulation systems.

主权项

1. A getter device including a combination of getter materials comprising:
a mixture of powders of transition metals oxides and metallic palladium, wherein
an amount of said metallic palladium is in a range between 0.2 and 2% by weight with respect to a total weight of said transition metals oxides,said mixture of powders of transition metals oxides and metallic palladium have a surface area between 5 and 50 m2/g and comprise cerium oxide and copper oxide, and copper oxide is present in a quantity in the range between 5 and 50% with respect to the total weight of said transition metals oxides, wherein the combination of getter materials further comprises powders of at least one metal hydroxide selected in the group consisting of lithium hydroxide and calcium hydroxide.