The present invention concerns the field of vehicle technology and industrial-plant technology and relates to a brake disc provided with protection from wear and corrosion and to a method for production thereof. The known solutions have the disadvantage that the coating for providing protection from corrosion and wear is applied to the frictional surfaces of the brake disc and is rubbed off straight away during the first braking operations. The present invention addresses the problem of providing a brake disc that has improved and durable protection from corrosion and wear. The significantly improved properties of the brake disc in terms of protection from corrosion and wear are achieved according to the invention by at least the region of the frictional surfaces (2) having an AlSi-based diffusion layer (3), which has a layer thickness of 0.1 mm to 0.6 mm and is formed in the process of interaction with the steel or grey cast iron of the metal main body (1). The brake disc according to the invention can be used for example in vehicles or as a braking system for industrial brakes or in wind turbines.

An igniter of a passenger protection device has at least one metal pin for contacting the tripping unit of the passenger protection device. The metal pin has a contact end that can be coupled to the tripping unit. The metal pin has a gold coating with a layer thickness. A maximum layer thickness is present at a distance of at least 1 mm from the contact end.

An igniter of a passenger protection device has at least one metal pin for contacting the tripping unit of the passenger protection device. The metal pin has a contact end that can be coupled to the tripping unit. The metal pin has a gold coating with a layer thickness. A maximum layer thickness is present at a distance of at least 1 mm from the contact end.

A system and method for treating a cavity comprises arranging a niobium structure in a coating chamber, the coating chamber being arranged inside a furnace, coating the niobium structure with tin thereby forming an Nb.sub.3Sn layer on the niobium structure, and doping the Nb.sub.3Sn layer with nitrogen, thereby forming a nitrogen doped Nb.sub.3Sn layer on the niobium structure.

Disclosed is a method of manufacturing a rare earth permanent magnet with substantially improved magnetic property. The method comprises: preparing a magnet master alloy by melting an R-T-B based alloy; pulverizing the magnet master alloy to provide a magnet powder; pressurizing the magnet powder as applying magnetic field to the magnet powder under an inert atmosphere to form a magnet molded body; sintering the magnet molded body under a vacuum atmosphere to obtain a sintered magnet molded body having oxygen content of about 0.1 wt % or less based on the total weight of the sintered magnet molded body; and treating the sintered magnet molded body with Dy and Tb.

Disclosed is a method of manufacturing a rare earth permanent magnet with substantially improved magnetic property. The method comprises: preparing a magnet master alloy by melting an R-T-B based alloy; pulverizing the magnet master alloy to provide a magnet powder; pressurizing the magnet powder as applying magnetic field to the magnet powder under an inert atmosphere to form a magnet molded body; sintering the magnet molded body under a vacuum atmosphere to obtain a sintered magnet molded body having oxygen content of about 0.1 wt % or less based on the total weight of the sintered magnet molded body; and treating the sintered magnet molded body with Dy and Tb.

A facile method is based on a pack-cementation process using large-area copper foil instead of copper powder. By controlling a pack-cementation time and an amount of alloying element (e.g., aluminum), a hierarchical microporous or nanoporous copper can be created. When coated with tin active material, the hierarchical microporous or nanoporous copper can be used as an advanced lithium-ion battery anode. A coin-cell test exhibited a four-fold higher areal capacity (e.g., 7.4 milliamp-hours per square centimeter without any performance degradation up to 20 cycles) as compared to a traditional graphite anode.

A facile method is based on a pack-cementation process using large-area copper foil instead of copper powder. By controlling a pack-cementation time and an amount of alloying element (e.g., aluminum), a hierarchical microporous or nanoporous copper can be created. When coated with tin active material, the hierarchical microporous or nanoporous copper can be used as an advanced lithium-ion battery anode. A coin-cell test exhibited a four-fold higher areal capacity (e.g., 7.4 milliamp-hours per square centimeter without any performance degradation up to 20 cycles) as compared to a traditional graphite anode.

An Al—Mg—Si aluminum alloy material includes Sn. An oxide film formed on a surface of the aluminum alloy material is analyzed by a semi-quantitative analysis by X-ray photoelectron spectroscopy. A ratio of the number of Sn atoms to the number of Mg atoms in the oxide film is 0.001 to 3 on average. A ratio of the total number of atoms of Sn and Mg to the number of oxygen atoms is 0.001 to 0.2 on average.

A surface-treated metal plate including: a metal plate; and a nickel-cobalt binary alloy layer formed on the metal plate. When a part having a content ratio of oxygen atoms of 5 atomic % or more as measured by X-ray photoelectron spectroscopic analysis is an oxide coating film, the nickel-cobalt binary alloy layer contains the oxide coating film with a thickness of 0.5 to 30 nm on a surface thereof, and when a pressure cooker test including temperature increasing, retention for 72 hours under a water-vapor atmosphere at a temperature of 105° C. and a relative humidity of 100% RH, and temperature decreasing is performed, the amount of increase in the thickness of the oxide coating film is 28 nm or less.