A bonding sheet includes a copper foil and sinterable bonding films formed on both faces of the copper foil. The bonding films each contain copper particles and a solid reducing agent. The bonding sheet is used to bond to a target object to be bonded having at least one metal selected from gold, silver, copper, and nickel on a surface thereof. A bonded structure includes: a bonded object having at least one metal selected from gold, silver, copper, and nickel on a surface thereof; a copper foil; and a bonding layer including a sintered structure of copper particles; and the bonded object and the copper foil are electrically connected to each other via the bonding layer.

The present invention relates to a silica glass member including: a main body including a silica glass and having a bonding part for bonding to another member; and a bonding film which is provided on the bonding part, has a thickness of 0.2 m to 10 m, and includes Au and a glass formed through melting of glass frit, in which the bonding film is produced from Au powder having an average particle diameter of 3 m or less and glass frit having a softening point of 850 C. or lower, a process for producing a silica glass member, and a process for bonding a ceramic and a silica glass.

A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 10.sup.5 C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.

A kind of aluminum alloy and corresponding heat treatment process applied to manufacturing aluminum/steel cladding plates which are resistant to high temperature brazing belong to alloy materials technology field. In the aluminum/steel cladding plates, the aluminum part was alloyed with 0.76%0.78% Si and 0.0550.10% Er in weight percent and the rest was Al and some unavoidable impurity. The Steel part was 08Al steel. After cladding cold rolling with deformation of 55%2%, the aluminum/steel cladding plates were annealed at 510535 C. for different times. Then simulated brazing process was performed to optimize the range of annealing time and temperature. The so produced Al/St cladding plates could not only effectively solve the low interface strength in Al/St cladding plates, but also meet the mechanical properties which were necessary for further processing of Al/St cladding plates. It was provided a kind of aluminum alloy and corresponding heat treatment process which could effectively solve the low bonding strength under the condition of high temperature brazing because of the existence of brittle FeAl phases.

A thermal bonding sheet includes a pre-sintering layer containing copper particles and polycarbonate.

A method for joining heat transfer plates, comprising: applying a melting depressant composition on individual application areas of a first metal sheet, each application area comprising a mid-section and two end-sections; pressing ridges and grooves in the metal sheet, the ridges extending in a direction that extends between the end-sections of the application areas, such that the application areas are located on top of the ridges; bringing the metal sheet into contact with a second, pressed metal sheet, such that contact points are formed where the mid-sections of the application areas relocated; heating the sheets until melted metal is formed at the application areas where the melting depressant composition is applied; and allowing the melted metal to solidify such that a joint is obtained at the contact points.

Manufactured articles, and methods of manufacturing enhanced surface smoothed components and articles. More particularly, surface smoothed components and articles, such as combustor components of turbine engines, having surface treatment conferring reduced roughness for enhanced performance and reduced wear related reduction in part life.

A braze alloy composition for sealing a ceramic component to a metal component in an electrochemical cell is presented. The braze alloy composition includes copper, nickel, and an active metal element. The braze alloy includes nickel in an amount less than about 30 weight percent, and the active metal element in an amount less than about 10 weight percent. An electrochemical cell using the braze alloy for sealing a ceramic component to a metal component in the cell is also provided.

A mount structure includes two members that are bonded to each other with a bonding material layer having a first interface layer and a second interface layer at the interfaces with the two members. The bonding material layer contains a first intermetallic compound and a stress relaxation material. The first intermetallic compound has a spherical, a columnar, or an oval spherical shape, and the same crystalline structure as the first interface layer and the second interface layer, and partly closes the space between the first interface layer and the second interface layer. The stress relaxation material contains tin as a main component, and fills around the first intermetallic compound.

A composite hard-surface material preparation method and a composite hard-surface material prepared thereby, the preparation method comprising: dispersedly fixing a plurality of cemented carbide sheets (2) to a surface of a metal substrate (1); and surfacing the cemented carbide sheets (2) and the metal substrate (1) with a solder (3) to obtain a composite hard-surface material, the solder (3) comprising nickel-based alloy powder, tungsten carbide particles and boron nitride powder. The solder (3) used in the preparation of the composite hard-surface material comprises nickel-based alloy powder, tungsten carbide particles and boron nitride powder, wherein the nickel-based alloy powder can increase fluidity and corrosion resistance, the tungsten carbide particle can improve hardness, and the boron nitride powder can effectively reduce friction coefficient. The present solder has good fluidity, high hardness and good solderability, using said solder, the obtained composite hard-surface material may enjoy good wear resistance.