摘要:
Solder compositions (by weight percent) (1) comprising between 37-53% tin, 37-57% bismuth, and 6-10% indium and having a melting temperature between 99.degree.-124.degree. C., and (2) comprising between 48-58% tin, 40-50% bismuth, and 2-5% indium and having a melting temperature between 125-157.
摘要:
A method of manufacturing a lead-free electrical solder paste having primary solder powder and an additive metal powder component that does not melt during the soldering process. Metal powders may be either elemental metal or a metal alloy. The primary powder is the same as is used in conventional solder paste. The additive powder has a melting point substantially higher than the melting point of the primary powder. The primary powder comprises between 80-99% Sn and 1-20% Ag. The additive powder metal is selected from the metal group comprising Sn, Ni, Cu, Ag, and Bi and mixtures thereof.
摘要:
Low temperature electrical solder compositions (by weight percent) having between 45-60% Sn; 25-40% Pb; 5-15% Bi; and 0.5-2.5% In. Preferably, the solder compositions have a melting temperature of about 154.degree.-162.degree. C. The solder compositions have microstructure similarly to Sn/Pb eutectic microstructure which makes them have excellent properties like higher yield strength and better creep resistance providing long term reliability to solder joints.
摘要:
Electrical solder compositions (by weight percent) having between 91.5-96.5% Sn; 2-5% Ag; 0.1-3% Ni; and 0-2.9% Cu; and having a melting temperature 220.degree. C. or less. The solder compositions have microstructure with uniformly dispersed fine grains of Sn--Ni, Sn--Cu and Sn--Cu--Ni intermetallic phases that provide resistance to grain growth during thermal cycling.
摘要:
The invention is a self-low-temperature curing metallic adhesive with thermal and electrical conductivity. It comprises a paste mixture of a liquid metal having a melting temperature below 30.degree. C. and comprising: (1) 99.2-75 wt. % gallium and (2) aluminum or zinc and (3) optionally tin or indium; and a metallic powder selected from the group consisting of: zirconium, rare earth elements, copper, nickel, silver, antimony, cobalt, chromium, germanium, gold, iron, magnesium, manganese, platinum, palladium, and vanadium, and combinations of any of them.
摘要:
Electrical solder compositions (by weight percent) having between 43-58% Sn; 38-52% Bi; and at least one of: 5-15%Sb; 1-4.0% Cu; 2% In; and 1-2% Ag, and having a melting temperature 133.degree.-167.degree. C. The solders are lead-free and have low melting points making them particularly useful for applications wherein components being joined involve thermoplastic substrates.
摘要:
A method of manufacturing an electrical solder paste having primary solder powder and an additive metal powder component that does not melt during the soldering process. Metal powders may be either elemental metal or a metal alloy. The primary powder is the same as is used in conventional solder paste. The additive powder has a melting point substantially higher than the melting point of the primary powder. The primary powder comprises between 60-99% Sn, 0-40% Pb and 0-10% Ag. The additive powder metal is selected from the metal group comprising Sn, Pb, Ni, Cu, Ag, and Bi and mixtures thereof.
摘要:
The present invention is an aluminum assembly comprising at least two components brazed to each other. The assembly comprises: at least a first aluminum based component having a coating of a zinc-antimony alloy having at least 1.0 wt. % antimony applied to a region of a surface of the component which is to be joined to a second aluminum based component; and at least one second aluminum based component disposed adjacent to the coating; whereby the at least first aluminum based component and the at least second aluminum based component are joined together during a controlled atmosphere brazing (CAB) process.
摘要:
A center console for a motor vehicle comprising a stationary housing mounted within the vehicle. The housing includes an open center defined between opposing ends and has a console body mounted within the open center of the housing. The console body is rotatable about a longitudinal axis running through the console body and is mounted such that an operator may remove the body from the frame. Also, at least two longitudinal side walls of the rotating body are visible within the open center and the console body may be rotated such that alternate side walls may be positioned in an uppermost position with respect to the center console. Thus, a user may exchange the console body for another and access multiple sides of the console body, regardless of which is in the uppermost position.
摘要:
A method and article for attaching an electronic component, such as a semiconductor die, to a substrate includes applying a relatively low-melting-temperature solder preform to the substrate; and applying a bead of a curable bonding material to the substrate around the periphery of the solder preform in an amount sufficient to substantially contain the solder material and bridge the gap between the die and the substrate upon a subsequent collapse of the solder preform along its thickness dimension. After placing the die atop the solder preform so as to at least partially overlie the bonding material, the method includes heating the solder preform and the bonding material so as to reflow the solder, whereupon the solder preform collapses to allow the bonding material to engage the underside of the die, and to subsequently cure the bonding material.