An aluminum alloy heat exchanger is produced by applying a coating material that is prepared by adding a binder to a mixture of an Si powder and a Zn-containing compound flux powder to a surface of an aluminum alloy refrigerant tube, assembling a bare fin that is formed of an AlMnZn alloy with the refrigerant tube, and brazing the refrigerant tube and the bare fin by heating in an atmosphere-controlled furnace, the refrigerant tube being an extruded product of an aluminum alloy that comprises 0.5 to 1.7% (mass %, hereinafter the same) of Mn, less than 0.10% of Cu, and less than 0.10% of Si, with the balance being Al and unavoidable impurities.

A method for simultaneous ultrasonic welding/brazing of a first metallic alloy workpiece over a second metallic alloy workpiece includes creating depressions in a joining surface of a first metallic alloy workpiece, and applying a coating material to at least one of the joining surface of the first metallic alloy workpiece or a joining surface of a second metallic alloy workpiece. Next, contaminates are removed from the joining surfaces of the first metallic alloy workpiece and the second metallic alloy workpiece, and the workpieces are joined using ultrasonic vibration to create a welded and brazed joint.

Embodiments of the present disclosure relate to an alloy as a brazing alloy for an electric switch braze joint, an electric switch braze joint, an electric switch and a method of producing an electric switch braze joint. The alloy composition of said the alloy consists of at least one element selected from each of group I and group II listed below, and a balance of impurities, Ag, and at least one of Cu, and Zn. Group I encompasses Cd, Mn, Ni, P, Sb, Si, Sn, Ti, and oxides thereof in a total amount of 0.5 to 45.0 wt. %. Group II encompasses Bi, Mo, Te, W, and oxides thereof, oxides of Cu and Zn in a total amount of 0.1 to 15.0 wt. %.

A method for bonding a cylinder liner within a cylinder bore of a vehicle engine block includes providing a bonding substrate on one of an outside surface of the cylinder liner and an inside surface of a cylinder bore in the engine block, positioning the cylinder liner in the cylinder bore, and heating the cylinder liner.

A method of making a semiconductor including soldering a conductor to an aluminum metallization is disclosed. In one example, the method includes substituting an aluminum oxide layer on the aluminum metallization by a substitute metal oxide layer or a substitute metal alloy oxide layer. Then, substitute metal oxides in the substitute metal oxide layer or the substitute metal alloy oxide layer are at least partly reduced. The conductor is soldered to the aluminum metallization using a solder material.

A clad aluminum alloy material exhibiting favorable corrosion resistance and brazeability in an alkaline environment is shown by a clad aluminum alloy material with excellent brazeability and corrosion resistance in which one surface of an aluminum alloy core material is clad with a sacrificial anode material and the other surface is clad with brazing filler material. The core material includes an aluminum alloy of Si: 0.3-1.5%, Fe: 0.1-1.5%, Cu: 0.2-1.0%, Mn: 1.0-2.0%, and Si content+Fe content 0.8%, wherein the 1-20 m equivalent circle diameter AlMnSiFe-based intermetallic compound density is 3.010.sup.5 to 1.010.sup.6 pieces/cm.sup.2, and the 0.1 m to less than 1 m equivalent circle diameter AlMnSiFe-based intermetallic compound density is at least 1.010.sup.7 pieces/cm.sup.2. The sacrificial anode material includes an aluminum alloy containing Si: 0.1-0.6%, Zn: 1.0-5.0%, and Ni: 0.1-2.0%.

Provided in one embodiment is a method of forming a connection mechanism in or on a bulk-solidifying amorphous alloy by casting in or on, or forming with the bulk-solidifying amorphous alloy, a machinable metal. The connection mechanism can be formed by machining the machinable metal.

A solder composition comprising a material in a first phase (e.g., liquid and/or solid phase) with a transition temperature is provided. Exposure of the solder to a temperature that meets or exceeds the transition temperature causes the material to undergo a phase change from the first phase to a gaseous phase. The phase change physically transforms the solder material.

A solder composition comprising a material in a first phase (e.g., liquid and/or solid phase) with a transition temperature is provided. Exposure of the solder to a temperature that meets or exceeds the transition temperature causes the material to undergo a phase change from the first phase to a gaseous phase. The phase change physically transforms the solder material.

A brazing composition contains 1 part by mass or more and 10 parts by mass or less of Zn powder, 1 part by mass or more and 5 parts by mass or less of Si powder, 3 parts by mass or more and 10 parts by mass or less of KAlF flux, 1 part by mass or more and 3 parts by mass or less of (meth)acrylic resin, wherein the mass ratio (Zn/Si) of Zn powder relative to Si powder is 1 or more and 5 or less.