A method according to the invention for producing a connection between two surfaces or surface sections of two ceramic parts comprises: provision of a first ceramic part and of a second ceramic part; provision of an active brazing solder material on at least one surface section of at least one of the ceramic parts; and heating the active brazing solder in a vacuum brazing process. The whole active brazing solder material is provided for connecting the first and the second ceramic part by a sputtering method, wherein at least one surface section of at least one of the ceramic parts, preferably of the two ceramic parts, is layered with a layer sequence of individual components of the active brazing solder material, wherein the average strength of the layers of an individual component of the active brazing solder is no more than 0.5%, in particular not more than 0.2%, preferably not more than 0.1% and especially preferably not more than 0.05% of the strength of the joining region.

An aluminum alloy brazing sheet exhibits excellent brazability by effectively weakening an oxide film formed on the surface of a filler metal. The aluminum alloy brazing sheet includes a core material and a filler metal, and is used to braze aluminum in an inert gas atmosphere or in vacuum, the core material including aluminum or an aluminum alloy, the filler metal including 6 to 13 mass % of Si, with the balance being Al and unavoidable impurities, and one side or each side of the core material being clad with the filler metal, wherein the core material is clad with the filler metal in a state in which a sheet material is interposed between the core material and the filler metal, the sheet material including one element, or two or more elements, among 0.05 mass % or more of Li, 0.05 mass % or more of Be, 0.05 mass % or more of Ba, and 0.05 mass % or more of Ca, with the balance being Al and unavoidable impurities.

An aluminum alloy brazing sheet exhibits excellent brazability by effectively weakening an oxide film formed on the surface of a filler metal. The aluminum alloy brazing sheet includes a core material and a filler metal, and is used to braze aluminum in an inert gas atmosphere or in vacuum, the core material including aluminum or an aluminum alloy, the filler metal including 6 to 13 mass % of Si, with the balance being Al and unavoidable impurities, and one side or each side of the core material being clad with the filler metal, wherein the core material is clad with the filler metal in a state in which a sheet material is interposed between the core material and the filler metal, the sheet material including one element, or two or more elements, among 0.05 mass % or more of Li, 0.05 mass % or more of Be, 0.05 mass % or more of Ba, and 0.05 mass % or more of Ca, with the balance being Al and unavoidable impurities.

A metallic tubular member having a closed end member for use in heating, ventilation, and air conditioning (HVAC) systems or refrigeration systems and method of manufacturing are presented. In one instance, the method includes providing a metallic tubular stock member having a first end and a second end, wherein the first end is open and closing the first end of the metallic tubular stock member to form a first closed circular member having an outside diameter D.sub.1; forming a sealing aperture having an outside diameter D.sub.2 through the first closed circular end, wherein D.sub.2 is less than 5 percent of D.sub.1; and applying a heat-based sealing process including a metallic flow into the sealing aperture. Other methods and systems are presented.

A method for reducing a process time for soldering electrical or electronic components by electromagnetic induction heating, in particular soldering electrical contact elements with solder connection surfaces which are applied to a non-metallic substrate, in particular a glass pane, the method comprising the steps providing an electrical contact element configured as a solder base and made from an iron nickel or iron chromium alloy material; applying a lead free connection material to the soldering base, wherein the connection material or the solder is made from a lead free material, in particular Bi.sub.57Sn.sub.42Ag.sub.1, Bi.sub.57Sn.sub.40Ag.sub.3, SAg.sub.3.8Cu.sub.0.7 or Sn.sub.55Bi.sub.44Ag.sub.1; positioning the soldering base on the respective solder contact surface; inductive heating of the solder base by high frequency energy with increased heating of the solder base material and reduced heating of the material of the respective solder connection surface; and completing the soldering step after a time period of less than or equal to 10 seconds, advantageously 4 to 6 seconds. The invention also relates to a contact element configured as a particular soldering base.

A method for reducing a process time for soldering electrical or electronic components by electromagnetic induction heating, in particular soldering electrical contact elements with solder connection surfaces which are applied to a non-metallic substrate, in particular a glass pane, the method comprising the steps providing an electrical contact element configured as a solder base and made from an iron nickel or iron chromium alloy material; applying a lead free connection material to the soldering base, wherein the connection material or the solder is made from a lead free material, in particular Bi.sub.57Sn.sub.42Ag.sub.1, Bi.sub.57Sn.sub.40Ag.sub.3, SAg.sub.3.8Cu.sub.0.7 or Sn.sub.55Bi.sub.44Ag.sub.1; positioning the soldering base on the respective solder contact surface; inductive heating of the solder base by high frequency energy with increased heating of the solder base material and reduced heating of the material of the respective solder connection surface; and completing the soldering step after a time period of less than or equal to 10 seconds, advantageously 4 to 6 seconds. The invention also relates to a contact element configured as a particular soldering base.

A brazed joint having excellent tensile strength (TSS and CTS) and a method of production of the same are provided. A sheet combination 200 comprised of steel sheets 210, 220 between which a brazing filler metal 230 is clamped is heated at a temperature of the Ac3 point of the steel sheet (matrix material) or more. The Ar3 point of the regions near the brazing filler metal at the steel sheets is made higher than the Ar3 point of the steel sheets (matrix material), then the quenching start temperature X is made a temperature of the Ar3 point of the steel sheet (matrix material) or less and hot stamping is performed to produce a brazed joint.

A brazed joint having excellent tensile strength (TSS and CTS) and a method of production of the same are provided. A sheet combination 200 comprised of steel sheets 210, 220 between which a brazing filler metal 230 is clamped is heated at a temperature of the Ac3 point of the steel sheet (matrix material) or more. The Ar3 point of the regions near the brazing filler metal at the steel sheets is made higher than the Ar3 point of the steel sheets (matrix material), then the quenching start temperature X is made a temperature of the Ar3 point of the steel sheet (matrix material) or less and hot stamping is performed to produce a brazed joint.

A method of joining an aluminum workpiece and an adjacent overlapping steel workpiece by reaction metallurgical joining, and the resultant metallurgical joint formed between the two workpieces, are disclosed. The method involves compressing a reaction material located between the aluminum and steel workpieces and heating the reaction material momentarily to form a metallurgical joint that comprises bonding interface between the reaction material and the steel workpiece and a bonding interface between the reaction material and the aluminum workpiece. The reaction material is formulated to be able to interact with both aluminum and steel in order to establish the bonding interfaces of the metallurgical joint. Moreover, the practice of oscillating wire arc welding may be employed to deposit the reaction material in the form of a reaction material deposit onto the steel workpiece prior to assembling the steel and aluminum workpieces in a workpiece stack-up.

A magnetic component with a rare-earth magnet is provided. The rare-earth magnet has a bronze coating that partially or entirely covers the surface of the rare-earth magnet. Further, the tin coating partially or entirely covers the bronze coating. A production process for the magnetic component as well as a soldering method for connecting the magnetic component with a substrate is also provided.