The invention concerns the field of hardmetal materials and relates to hardmetals such as those which can, for example, be used as cutting material for tools. The object of the present invention is to specify hardmetals which include a novel concept for the structural composition of the hardmetals. The object is attained with hardmetals which are at least made up of hard phases in particle form and metal binder arranged therebetween, wherein a high-entropy hard phase (HEH) is composed of at least four metals (Me) of the 4th and/or 5th and/or 6th subgroup of the PTE in the form of a solid solution of carbides, nitrides, carbonitrides, oxycarbides, and/or oxycarbonitrides of the metals, wherein the respective amounts of the metals in the HEH are essentially equal.

A sintered part has at least one base with a first end face which faces in a first axial direction and a second end face which faces in a second axial direction. The end faces are produced in a press for producing a green body (which is subsequently sintered to form the sintered part) by applying at least one punch which can be moved along the axial directions. The sintered part has an elevation extending from the first end face towards one end at least in the axial direction over a first height, and the elevation has a first width extending transversely to the axial direction in a radial direction and at least some portions of which are smaller than 0.8 millimeters, wherein at least some portions of the sintered part have a first density along the first width, said density equaling at least 87% of the full material density.

A sintered part has at least one base with a first end face which faces in a first axial direction and a second end face which faces in a second axial direction. The end faces are produced in a press for producing a green body (which is subsequently sintered to form the sintered part) by applying at least one punch which can be moved along the axial directions. The sintered part has an elevation extending from the first end face towards one end at least in the axial direction over a first height, and the elevation has a first width extending transversely to the axial direction in a radial direction and at least some portions of which are smaller than 0.8 millimeters, wherein at least some portions of the sintered part have a first density along the first width, said density equaling at least 87% of the full material density.

A method for sintering metallic and/or non-oxide components includes completely encapsulating, in a metal halide salt, a green body comprising at least one metallic and/or non-oxide powder, and compressing the encapsulated green body so as to be gastight. The method further includes heating, together with a metal halide salt in the presence of oxygen up to sintering temperatures, the compressed, encapsulated green body. The method additionally includes at least partially dissolving, after cooling, the metal halide salt in a liquid so that the sintered component can be removed.

A method for sintering metallic and/or non-oxide components includes completely encapsulating, in a metal halide salt, a green body comprising at least one metallic and/or non-oxide powder, and compressing the encapsulated green body so as to be gastight. The method further includes heating, together with a metal halide salt in the presence of oxygen up to sintering temperatures, the compressed, encapsulated green body. The method additionally includes at least partially dissolving, after cooling, the metal halide salt in a liquid so that the sintered component can be removed.

In various embodiments, an electrothermal propulsion system for imparting velocity to a spacecraft features a joint-free monolithic integrated thruster component including an inlet section, a resistively heated heat-exchanger section, and a nozzle section.

In various embodiments, an electrothermal propulsion system for imparting velocity to a spacecraft features a joint-free monolithic integrated thruster component including an inlet section, a resistively heated heat-exchanger section, and a nozzle section.

A method for sintering metallic and/or non-oxide components includes completely encapsulating, in a metal halide salt, a green body comprising at least one metallic and/or non-oxide powder, and compressing the encapsulated green body so as to be gastight. The method further includes heating, together with a metal halide salt in the presence of oxygen up to sintering temperatures, the compressed, encapsulated green body. The method additionally includes at least partially dissolving, after cooling, the metal halide salt in a liquid so that the sintered component can be removed.

A method for sintering metallic and/or non-oxide components includes completely encapsulating, in a metal halide salt, a green body comprising at least one metallic and/or non-oxide powder, and compressing the encapsulated green body so as to be gastight. The method further includes heating, together with a metal halide salt in the presence of oxygen up to sintering temperatures, the compressed, encapsulated green body. The method additionally includes at least partially dissolving, after cooling, the metal halide salt in a liquid so that the sintered component can be removed.

The invention concerns the field of hardmetal materials and relates to hardmetals such as those which can, for example, be used as cutting material for tools. The object of the present invention is to specify hardmetals which include a novel concept for the structural composition of the hardmetals. The object is attained with hardmetals which are at least made up of hard phases in particle form and metal binder arranged therebetween, wherein a high-entropy hard phase (HEH) is composed of at least four metals (Me) of the 4th and/or 5th and/or 6th subgroup of the PTE in the form of a solid solution of carbides, nitrides, carbonitrides, oxycarbides, and/or oxycarbonitrides of the metals, wherein the respective amounts of the metals in the HEH are essentially equal.