Abstract: A component includes a multiplicity of individual powder particles of Mo, a Mo-based alloy, W or a W-based alloy that have been fused together to give a solid structure by a high-energy beam via an additive manufacturing method. The component has an oxygen content of not more than 0.1 at %. An additive manufacturing method includes producing the powder via the melt phase and providing a carbon content in the region of not less than 0.15 at %. The components are crack-free and have high grain boundary strength.

Abstract: A component has a solid structure that is manufactured using a laser or electron beam in an additive manufacturing process. The solid structure is formed from at least one material selected from the group consisting of molybdenum, a molybdenum-based alloy, tungsten, a tungsten-based alloy, and a molybdenum-tungsten-based alloy. The component includes one or more alloying element which at least in the temperature range 1500° C. has/have a reducing effect, as follows: in the case of molybdenum and the molybdenum-based alloy, for MoO2 and/or MoO3; in the case of tungsten and the tungsten-based alloy, for WO2 and/or WO3; and, in the case of the molybdenum-tungsten-based alloy, for at least one oxide from the group of MoO2, MoO3, WO2 and WO3. The alloying element, or at least one of the alloying elements, is present both in at least partially unoxidized form and in oxidized form.

Abstract: A component has a matrix phase composed of at least one material selected from the group molybdenum, a molybdenum-based alloy, tungsten, a tungsten-based alloy and a molybdenum-tungsten-based alloy. The component is manufactured using a laser or electron beam in an additive manufacturing process. The molybdenum content, the tungsten content or the total content of molybdenum and tungsten is more than 85 at %, and the component contains particulates having a melting point above the melting point of the matrix phase.

Abstract: A metallization for a thin-film component includes at least one layer composed of an Mo-based alloy containing Al and Ti and usual impurities. A process for producing a metallization includes providing at least one sputtering target, depositing at least one layer of an Mo-based alloy containing Al and Ti and usual impurities, and structuring the metallization by using at least one photolithographic process and at least one subsequent etching step. A sputtering target is composed of an Mo-based alloy containing Al and Ti and usual impurities. A process for producing a sputtering target composed of an Mo-based alloy includes providing a powder mixture containing Mo and also Al and Ti and cold gas spraying (CGS) of the powder mixture onto a suitable support material.

Abstract: A component includes a multiplicity of individual powder particles of Mo, a Mo-based alloy, W or a W-based alloy that have been fused together to give a solid structure by a high-energy beam via an additive manufacturing method. The component has an oxygen content of not more than 0.1 at %. An additive manufacturing method includes producing the powder via the melt phase and providing a carbon content in the region of not less than 0.15 at %. The components are crack-free and have high grain boundary strength.

Abstract: A process for producing a layer or a body built up of layers. A process gas which has a pressure of >10 bar is accelerated in a convergent-divergent nozzle and a coating material which is formed by particles and is composed of Mo, W, an Mo-based alloy or a W-based alloy is injected into the process gas. The particles are at least partly present as aggregates and/or agglomerates. It is possible to produce dense layers and components in this way. We also describe layers and components having a microstructure with cold-deformed grains having a high aspect ratio.

Abstract: A sputtering target is composed of an alloy consisting of 5 to 70 at % of at least one element from the group of (Ga, In) and 0.1 to 15 at % of Na, the remainder being Cu and typical impurities. The sputtering target includes at least one intermetallic Na-containing phase.

Abstract: A tubular target formed of molybdenum or a molybdenum alloy has an oxygen content of less than 50 ?g/g, a density of greater than 99% of the theoretical density, and an average grain size of less than 100 ?m. The molybdenum or molybdenum alloy tube may be produced by extrusion. In one embodiment, the molybdenum tube has a backing tube of titanium or titanium alloy. In an embodiment, the molybdenum tube has a varying wall thickness with an increase towards its ends.

Abstract: A rotary X-ray anode has a support body and a focal track formed on the support body. The support body and the focal track are produced as a composite by powder metallurgy. The support body is formed from molybdenum or a molybdenum-based alloy and the focal track is formed from tungsten or a tungsten-based alloy. Here, in the conclusively heat-treated rotary X-ray anode, at least one portion of the focal track is located in a non-recrystallized and/or in a partially recrystallized structure.

Abstract: A metallization for a thin-film component includes at least one layer composed of an Mo-based alloy containing Al and Ti and usual impurities. A process for producing a metallization includes providing at least one sputtering target, depositing at least one layer of an Mo-based alloy containing Al and Ti and usual impurities, and structuring the metallization by using at least one photolithographic process and at least one subsequent etching step. A sputtering target is composed of an Mo-based alloy containing Al and Ti and usual impurities. A process for producing a sputtering target composed of an Mo-based alloy includes providing a powder mixture containing Mo and also Al and Ti and cold gas spraying (CGS) of the powder mixture onto a suitable support material.

Abstract: A collimator for x-ray, gamma, or particle radiation has a plurality of collimator elements made of a tungsten-containing material to reduce scattered radiation. At least one collimator element consists of a tungsten alloy having a tungsten content of 72 to 98 wt.-%, which contains 1 to 14 wt.-% of at least one metal of the group Mo, Ta, Nb and 1 to 14 wt.-% of at least one metal of the group Fe, Ni, Co, Cu. The collimator also has very homogeneous absorption behavior at very thin wall thicknesses of the collimator elements.

Abstract: A method of producing a component from refractory metal or a refractory metal alloy having a refractory metal content >50 at %. The process includes the steps of providing a powder formed of particles and solidifying the powder under the action of a laser beam or electron beam. The powder has a particle size d50 as measured laser-optically of >10 ?m and an average surface area as measured by the BET method of >0.08 m2/g.

Abstract: A process for producing a layer or a body built up of layers. A process gas which has a pressure of >10 bar is accelerated in a convergent-divergent nozzle and a coating material which is formed by particles and is composed of Mo, W, an Mo-based alloy or a W-based alloy is injected into the process gas. The particles are at least partly present as aggregates and/or agglomerates. It is possible to produce dense layers and components in this way. We also describe layers and components having a microstructure with cold-deformed grains having a high aspect ratio.

Abstract: A rotary X-ray anode has a support body and a focal track formed on the support body. The support body and the focal track are produced as a composite by powder metallurgy. The support body is formed from molybdenum or a molybdenum-based alloy and the focal track is formed from tungsten or a tungsten-based alloy. Here, in the conclusively heat-treated rotary X-ray anode, at least one portion of the focal track is located in a non-recrystallized and/or in a partially recrystallized structure.

Abstract: A rotary X-ray anode has a support body and a focal track formed on the support body. The support body and the focal track are produced as a composite by powder metallurgy. The support body is formed from molybdenum or a molybdenum-based alloy and the focal track is formed from tungsten or a tungsten-based alloy. Here, in the conclusively heat-treated rotary X-ray anode, at least one portion of the focal track is located in a non-recrystallized and/or in a partially recrystallized structure.

Abstract: A sputtering target is composed of an alloy consisting of 5 to 70 at % of at least one element from the group of (Ga, In) and 0.1 to 15 at % of Na, the remainder being Cu and typical impurities. The sputtering target includes at least one intermetallic Na-containing phase.

Abstract: An interconnector, or bipolar plate, for a high-temperature solid electrolyte fuel cell is composed of a sintered chromium alloy which has sintering pores and contains >90% by weight of Cr, from 3 to 8% by weight of Fe and optionally from 0.001 to 2% by weight of at least one element of the group of rare earth metals. The chromium alloy contains from 0.1 to 2% by weight of Al and the sintering pores are at least partially filled with an oxidic compound containing Al and Cr. The interconnector has a high impermeability to gas and dimensional stability.

Abstract: A tubular target is formed of molybdenum or a molybdenum alloy which has an oxygen content of less than 50 ?g/g, a density of greater than 99% of the theoretical density and an average grain size of less than 100 ?m. The molybdenum or molybdenum alloy tube may be produced by extrusion and it is formed with walls having a wall thickness that increases towards the ends of the tube. The molybdenum tube has a backing tube of titanium or titanium alloy that is attached inside with a material bond connection. Alternatively, the backing tube is formed of austenitic steel or a copper alloy.

Abstract: A rotary X-ray anode has a support body and a focal track formed on the support body. The support body and the focal track are produced as a composite by powder metallurgy. The support body is formed from molybdenum or a molybdenum-based alloy and the focal track is formed from tungsten or a tungsten-based alloy. Here, in the conclusively heat-treated rotary X-ray anode, at least one portion of the focal track is located in a non-recrystallized and/or in a partially recrystallized structure.

Abstract: A collimator for x-ray, gamma, or particle radiation has a plurality of collimator elements made of a tungsten-containing material to reduce scattered radiation. At least one collimator element consists of a tungsten alloy having a tungsten content of 72 to 98 wt.-%, which contains 1 to 14 wt.-% of at least one metal of the group Mo, Ta, Nb and 1 to 14 wt.-% of at least one metal of the group Fe, Ni, Co, Cu. The collimator also has very homogeneous absorption behavior at very thin wall thicknesses of the collimator elements.