Abstract:
Apparatus and method for the production of shaped reactive alloys are disclosed. The shaped reactive alloys are obtained by controlled droplet casting in inert atmosphere, wherein the droplets are produced by using mechanical force on a metallic ampoule containing the molten alloy. The manufacture of gas sorbent and elements for vacuum systems according to the above method are also described.
Abstract:
The present invention relates to a method of production of a new material, consisting of a) a leaching of component A from the surface of particles of the composition AnGam upon exposure to hot water on a special support b) solidification of the cover layer of gallium metal in ice-cold water, and c) passivation of the gallium surface layer of the particles in streams of pure water and air.The product has the form of singular particles of monocrystalline intermetallic compounds of the general formula AnGam with a continuous gallium surface coating for usage in evaporators of metal A, where A is an alkali or alkaline earth metal. The average diameter of the particles is in the range from about 0.2 mm to about 3.5 mm, the gallium coating is thicker than 10 μm.
Abstract:
The present invention relates to new gas sorbents on the basis of intermetallic compounds and a method for producing the same. The method comprises the following steps: mixing and melting of initial metals and homogenization of the melt under negative pressure of inert gas, manufacturing of cast shot by quenching of melted droplets under positive pressure, obtaining of skeleton-type granules by evaporation of the excess of the component A from cast shot under vacuum.
Abstract:
A new lithium material with high surface area, a method of its production, and a process of using the given material in purification of hydrogen or inert gases stream from active impurities. The material is manufactured in a form of granules of 0.2-2.5 mm in diameter with the structure of a dendritic carcass and is characterized with high sorption capacity and resistance to chemical shocks.
Abstract:
A method for preparation of a getter material on the basis of intermetallic compounds of barium is described. The method comprises preparing a melt of a ternary mixture containing barium, metal and sodium; directionally solidifying the melt to produce a textured ingot; granulating the textured ingot, thereby obtaining granules having open-ended voids extending therethrough; and evaporating the sodium from the granules by applying a thermovacuum treatment to the granules. The textured ingot comprises a getter body made of intermetallic compounds of barium; and open-ended voids within the getter body.
Abstract:
The present invention relates to metallic gas sorbents on the basis of solid solutions of lithium in a metal of the group consisting of Ag, Al, Au, Co, and Cu, which have unique mechanical properties suitable for the production of lithium alloys in the form of ductile and balls, wires, strips, and foils.
Abstract:
A sorption pump working according to the principle of mechanical activation of reactive getter materials at ambient temperature is presented. Pumps of the given type allow maintaining vacuum in different devices and apparatuses by sorption of any active gases with a controllable rate.
Abstract:
Two film materials, one of them with the structure of barium eutectic and another one with the structure of lithium solid solution, manufactured by thermal deposition. The mentioned films may give a freedom of choice of the sealing methods starting from the standard bonding processes with heating under vacuum to common gluing at room temperature.
Abstract:
A new lithium material with high surface area, a method of its production, and a process of using the given material in purification of hydrogen or inert gases stream from active impurities. The material is manufactured in a form of granules of 0.2-2.5 mm in diameter with the structure of a dendritic carcass and is characterized with high sorption capacity and resistance to chemical shocks.
Abstract:
The invention is concerned with a method of obtaining protective coatings on the surface of chemically active materials comprising a mixture of a chemically active metal and a fusible stable element. The method is characterized by comprising the steps of: providing at least one chemically active metal A providing at least one fusible stable element B mixing metal A and element B to form a mixture treating said mixture at its surface with a liquid agent L, which is capable of dissolving metal A but not capable of dissolving element B, at a temperature which is higher than the melting point of element B thereby creating a coating consisting essentially of element B at the surface of said mixture ceasing treatment when the desired thickness of the coating has been achieved removing the liquid agent and cleaning and drying the mixture.