초록 ▼

The process of the present invention provides for the sorption of residual gas in a vessel by means of a non-activated, non-evaporated barium getter. It comprises the steps of reducing an alloy of Baz+(Ba1-xAx)nBm to a particle size of less than 5 mm, under vacuum or an inert gas atmosphere and then

The process of the present invention provides for the sorption of residual gas in a vessel by means of a non-activated, non-evaporated barium getter. It comprises the steps of reducing an alloy of Baz+(Ba1-xAx)nBm to a particle size of less than 5 mm, under vacuum or an inert gas atmosphere and then placing the particulate alloy in the vessel. Upon exposing the particulate alloy to the residual gas in the vessel at room temperature the gas is sorbed. The metal A is a metal selected from the group consisting of elements of Group IIa of the periodic table of elements, excluding barium. The metal B is selected from the group consisting of elements of Group Ib, IIb, IIIa, IVa and Va of the periodic table of elements. Furthermore n=1, 2, 3 or 4 and m=1, 2 or 5, whereas o≤×≤0.5 and z is a value from zero to such a value that the total barium in the alloy is less than 95% by weight of the alloy.

대표청구항 ▼

A process for sorption of residual gas in a vessel by a non-evaporated barium getter comprising the steps of: i) comminuting an alloy of (Ba1-xAx)nBm to particles under a vacuum or inert gas to produce a particulate alloy; and ii) placing the particulate alloy in the vessel; and iii) sealing the ves

A process for sorption of residual gas in a vessel by a non-evaporated barium getter comprising the steps of: i) comminuting an alloy of (Ba1-xAx)nBm to particles under a vacuum or inert gas to produce a particulate alloy; and ii) placing the particulate alloy in the vessel; and iii) sealing the vessel thereby providing a sealed vessel; and iv) providing a partially evacuated atmosphere within the sealed vessel; and v) exposing the particulate alloy to the residual gas in the vessel at room temperature and absorbing the residual gas without vaporizing the particulate alloy and; wherein: “A”is a metal selected from the group consisting of elements of Group IIa of the periodic table of elements, excluding barium, “B”is a metal selected from the group consisting of elements of Group Ib, IIb, IIIa, IVa, and Va of the periodic table of elements, “n”=a whole number, “m”=a whole number, “x”has a value equal to or greater than zero and equal to or less than 0.5.