Abstract: The invention relates to a safety valve comprising a valve body with a guide bore which defines a longitudinal axis, a first opening which is formed on a base of the guide bore, and a second opening which is formed at a distance to the base along the longitudinal axis and which extends along a radial direction extending transversely to the longitudinal axis; a valve needle which is movably mounted in the guide bore of the valve body in an axial direction and which comprises a seal surface facing the first opening; a compression spring device with a spring that is compressed by a deflection and thereby biases the valve needle along the longitudinal axis into a seal position, in which the seal surface of the valve needle seals the first opening; and a thermally activatable trigger unit which has an extension along the longitudinal axis, said extension being greater than the deflection, and which is designed to collapse when a trigger temperature is reached, wherein the compression spring device is supported aga

Abstract: A tank container for storing gases, in particular for storing hydrogen in a motor vehicle. The tank container includes a main body which is preferably tubular, and comprises reinforcement elements which are arranged on a wall of the main body and are produced using an additive manufacturing process.

Abstract: The invention relates to a slow-transforming steel alloy for a component of a hydrogen store, which component is designed to contain or to be flowed through by hydrogen, wherein the slow-transforming steel alloy has a Vickers hardness of at least 300 HV and the slow-transforming steel alloy contains C, Si, Mn, P, S, Cr, Mo, Ni and/or V as alloy elements, the mass fractions of the alloy elements equaling: —C: at least 0.125% to at most 0.525%, —Si: 0.0% to at most 0.375%, —Mn: 0.0% to at most 0.375%, —P: 0.0% to at most 0.0145%, —S: 0.0% to at most 0.225%, —Cr: 0.0% to at most 0.25%, —Mo: at least 0.81% to at most 4.05%, —Ni: at least 0.50% to at most 3.75% and —V: at least 0.15% to at most 0.45%. The invention furthermore relates to a method for producing the slow-transforming steel alloy and to a hydrogen store having the component consisting of the slow-transforming steel alloy.

Abstract: The invention relates to a valve device (100) for a gaseous medium, in particular hydrogen, comprising a valve housing (6) which comprises a closing element (14) that is arranged therein and can be moved in the longitudinal axis (18). The closing element (14) interacts with a seal seat (16) in order to release and close a through-opening (22). The valve housing (6) is equipped with at least one spring element (8) which is supported against the closing element (14) and the valve housing (6). Furthermore, the at least one spring element (8) is made of a bimetal.

Abstract: A hydrogen gas storage tank includes a body including a steel bulk region and a passivating metal oxide layer adjacent to the steel bulk region, the oxide layer comprising a number of metal oxide molecules, all having a morphology, wherein at least about 51 wt. % of the number of metal oxide molecules are Fe2O3 molecules having morphologies of (012), (001), and/or (110) surface facets such that the oxide layer is configured to lower hydrogen adsorption into the steel bulk region by at least 25% compared to a steel bulk region free from the passivating metal oxide layer.

Abstract: The invention relates to a valve device (100) for a gaseous medium, in particular hydrogen, comprising a valve housing (6) which comprises a closing element (14) that is arranged therein and can be moved in the longitudinal axis (18). The closing element (14) interacts with a seal seat (16) in order to release and close a through-opening (22). The valve housing (6) is equipped with at least one spring element (8) which is supported against the closing element (14) and the valve housing (6). Furthermore, the at least one spring element (8) is made of a bimetal.

Abstract: A hydrogen gas storage tank includes a body including a steel bulk region and a passivating metal oxide layer adjacent to the steel bulk region, the oxide layer comprising a number of metal oxide molecules, all having a morphology, wherein at least about 51 wt. % of the number of metal oxide molecules are Fe2O3 molecules having morphologies of (012), (001), and/or (110) surface facets such that the oxide layer is configured to lower hydrogen adsorption into the steel bulk region by at least 25% compared to a steel bulk region free from the passivating metal oxide layer.

Abstract: A metallic material includes at least iron, carbon, chromium, molybdenum and vanadium, which metallic material has a bainitic basic structure and carbidic phases. The carbidic phases are at least partially formed by molybdenum carbide, vanadium carbide and/or chromium carbide. The carbidic phases at least partially have a diameter no greater than 200 nm.

Abstract: A fuel injection valve with a valve body (1), whose end oriented toward the combustion chamber is provided with a pressure chamber (26), which is connected to a supply conduit (7). The pressure chamber (26) is defined by a valve member (20) whose valve sealing surface (18) rests against a stationary valve seat (17) with an internal tension and can be lifted up from this valve seat by the pressure in the pressure chamber (26). Downstream of the unblocked opening cross section, there is at least one injection opening (12) into the combustion chamber of the engine. The valve member (20) is embodied as essentially disk-shaped and the valve sealing surface (18) is embodied in its radially outer edge region and can be lifted up from the valve seat (17) in an elastic manner. In its center region, the valve member (20) is prestressed toward its contact with the valve seat (17) by a securing element (22) on the valve body (1) (FIG. 2).

Abstract: A fuel injector for internal combustion engines, with a nozzle body in which a valve needle with a sealing face is movably supported. The sealing face of the valve needle comes into contact with a valve seat face that is adapted to the sealing face and is formed on an inner wall region of an end cup of the nozzle body. At least one injection opening is provided in the valve seat face, wherein both the inner wall region with the valve seat face of the nozzle body disposed on it and an outer wall region are hardened. The nozzle body is comprised of a rustproof martensitic steel that is hardened by means of case hardening with nitrogen.