Abstract: A method for simply producing components suitable for use under high loads and risks of wear and which have a core portion which consists of a metal material and a wear-resistant layer on a peripheral surface of the core portion is disclosed. A core portion blank is provided and consists of the metal material whose dimension in a first spatial direction is greater than the desired finished dimension of the core and whose second dimension is smaller than the desired finished dimension is provided. A material that forms a wear-resistant layer in the component is applied to a peripheral surface of the core portion blank. The composite body is shaped to form the component. The component may then be optionally finished.

Abstract: The invention shows possibilities which allow simplified production of implants or prostheses, specifically of dental implants or prostheses, by applying subtractive processes. For this purpose, the invention proposes the use of a precipitation-hardening or solid-solution-strengthening, biocompatible cobalt-based alloy for the production of blanks. Such blanks are provided in the soft state. Subsequently, each component (implant or prosthesis) is produced from the soft blank by means of material-removing machining. Subsequently, a heat-treatment of the implant or prosthesis then takes place to adjust the hardness thereof by means of precipitation hardening or solid-solution formation.

Abstract: A steel material which has a minimised density, a good wear resistance and a concomitantly high service life with maximised resistance to extreme temperature changes and likewise optimised corrosion resistance. The steel material is produced by powder metallurgy and constituted as follows (in wt. %): C: 1.5-5.0%, Si: 0.3-2.0%, Mn: 0.3-2.0%, P: 0-<0.035%, S: 0-<0.35%, N: 0-<0.1%, Cr: 3.0-15.0%, Mo: 0.5-2.0%, V: 6.0-18.0%, optionally one or more elements from the group Nb, Ni, Co, and W, wherein the content of Ni, Co and W is respectively at most 1.0% and the content of Nb is at most 2.0%, residual iron and unavoidable impurities, wherein separately added hard material particles in contents of 2.5 to 30 wt. % are embedded in the steel matrix. From steel alloy powder alloyed in this way, a solid semifinished product is formed by a sintering process or an additive process, which undergoes a heat treatment and is then finished to form the respective component.

Abstract: A steel material produced via powder metallurgy having a matrix that includes (in wt %) C: 3.9-5.0%, Si: 0.3-2.0%, Mn: 0.3-2.0%, P: 0-<0.035%. S: 0-<0.35%, N: 0-<0.12%. Cr: 11.0-15.0%, Mo: 0.5-2.0%, V: 13.5-16.5%. optionally at lease one element from the group of Nb, Ni, Co, and W, wherein the content of each of Ni, Co, and W is at most 1.0% and the content of Nb is at most 2.0% with the remainder being iron and unavoidable impurities. Hard material panicles may be present in contents of up to 30 wt % in the matrix. A solid semi-finished product is formed by a sintering process or an additive process from a sled alloy powder having this composition that undergoes a heal treatment and is then finished to form component.

Abstract: The invention shows possibilities which allow simplified production of implants or prostheses, specifically of dental implants or prostheses, by applying subtractive processes. For this purpose, the invention proposes the use of a precipitation-hardening or solid-solution-strengthening, biocompatible cobalt-based alloy for the production of blanks. Such blanks are provided in the soft state. Subsequently, each component (implant or prosthesis) is produced from the soft blank by means of material-removing machining. Subsequently, a heat-treatment of the implant or prosthesis then takes place to adjust the hardness thereof by means of precipitation hardening or solid-solution formation.

Abstract: The invention sets out a method for simply producing components which are suitable for use under high loads and risks of wear and which have a core portion which consists of a metal material and a wear-resistant layer on a peripheral surface of the core portion.

Abstract: This invention relates to a steel having high wear resistance, a high degree of hardness, good corrosion resistance and/or low thermal conductivity. A hardness of a steel is at least 56 HRC in a hardened state. In order to obtain this hardness, in a microstructure of the steel in total at least 30% wt. of hard phases are present which in addition to TiC particles include further carbide particles, oxide particles or nitride particles. Content of the TiC particles in the steel is at least 20% wt. The hard-phase particles are embedded in a matrix which includes (in % wt.) 9.0-15.0% Cr, 5.0-9.0% Mo, 3.0-7.0% Ni, 6.0-11.0% Co, 0.3-1.5% Cu, 0.1-2.0% Ti, 0.1-2.0% Al, the remainder being iron and unavoidable impurities.

Abstract: A process for recovering hard material particles which are present in a residue quantity, which is in a free-flowing or pourable form, of a hard metal which has a matrix consisting of a steel, nickel or a nickel alloy, in which the hard material particles are embedded, comprising the following production steps: pouring the residue quantity into an acid bath which contains a strong acid having a pKa value measured at room temperature of <4, adding an oxidant to the acid bath, wherein by adding the oxidant or the acid a redox potential of the acid bath is set which is within a desired range of 300-800 mV, dissolving the matrix of the residue quantity, and depositing of the hard material particles contained in the acid bath after dissolving the matrix.

Abstract: A process for recovering hard material particles which are present in a residue quantity, which is in a free-flowing or pourable form, of a hard metal which has a matrix consisting of a steel, nickel or a nickel alloy, in which the hard material particles are embedded, comprising the following production steps: pouring the residue quantity into an acid bath which contains a strong acid having a pKa value measured at room temperature of <4, adding an oxidant to the acid bath, wherein by adding the oxidant or the acid a redox potential of the acid bath is set which is within a desired range of 300-800 mV, dissolving the matrix of the residue quantity, and depositing of the hard material particles contained in the acid bath after dissolving the matrix.