منابع مشابه
Structural and Mechanical Characterization of Austempered Cu - Sn Ductile Iron Alloys
The effect of heat treatment and alloying elements of copper and tin on the microstructure and mechanical properties of austempered ductile cast iron alloys is investigated. The austenitizing temperature of 890°C, the isothermal transformation (austempering) temperatures of 285, 335 and 375°C, and austempering times of 15, 30, 75 and 150 minutes are studied. The alloying elements of copper and ...
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terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...
15 صفحه اولReactions in Electrodeposited Cu/Sn and Cu/Ni/Sn Nanoscale Multilayers for Interconnects
Miniaturization of electronic devices has led to the development of 3D IC packages which require ultra-small-scale interconnections. Such small interconnects can be completely converted into Cu-Sn based intermetallic compounds (IMCs) after reflow. In an effort to improve IMC based interconnects, an attempt is made to add Ni to Cu-Sn-based IMCs. Multilayer interconnects consisting of stacks of C...
متن کاملThe Interdiffusion of Cu and Sn in Internal Sn Nb3Sn Superconductors
For Nb3Sn superconductors manufactured by the internal Sn process, the most appropriate heat treatment is still a matter of debate. The major complications are the low melting temperature of Sn and the 7 Cu–Sn phases. Each phase has its own diffusivity and atomic volume, which differs significantly from the pure Sn and Cu phases from which the diffusion starts. Void formation near the Nb filame...
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ژورنال
عنوان ژورنال: Science in China Series G: Physics, Mechanics and Astronomy
سال: 2007
ISSN: 1672-1799,1862-2844
DOI: 10.1007/s11433-007-0038-6