Cross-Over StudiesAdultThe room-temperature resistivity of plutonium exceeds that of bismuth by 22 per cent, but is lower than the resistivity of α-manganese by approximately the same percentage.doi:10.1139/p56-146K. MendelssohnCanadian Journal of Physics...
Electrical and Thermal Conductivity of Metals,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工商银行等数万家
They found a value for the electrical conductivity of 2.2×106Ω−1m−1 at 15 GPa and 1500 K, and a value for the thermal conductivity of about 100 W m−1 K−1 at 7 GPa and in the temperature range 600–1300 K. These pressure–temperature conditions are far from those ...
In metals, thermal conduction results from the motion of free electrons, and there is close correspondence between thermal conductivity and electrical conductivity. In solids that are poor conductors of electricity and in most liquids, thermal conduction results from momentum transfer between adjacent vibr...
The effect of interelectronic scattering processes on the electrical and thermal conductivity of metals is considered for two simple cases: one unfilled parabolic band and two unfilled parabolic bands corresponding to one s-band and one inverted d-band. The first case corresponds to an alkali metal...
Thermal and Electrical Conductivity of Porous Metals made by Powder Metallurgy Methods Measurements are reported of the thermal conductivity and electrical resistivity over the range of 20° c to 200° c on several specimens of a sintered porous bronze material (89% Cu, 11% Sn). The constituent...
the rapid rate of decrease of the "ideal" thermal and electrical resistivities with temperature, particularly in Rh and Ir, suggests that s–d transitions are not a dominant resistive mechanism at low temperatures in these metals, in contrast to palladium, iron, and nickel, which were studied...
摘要: A simple device for welding metals with high electrical and thermal conductivity is described. The use of the device, which was adapted from a commercially available carbon deposition unit, for welding 0.0127 and 0.0507‐cm‐diam Ag, Au, and Pt wires is discussed.关键词:...
Conductivity measurements have been performed at 90–300°K on iron of high purity and dilute alloys of this metal with Mn, Ni or Si. For the elimination of the parasitic thermal losses in the heat-conductivity measurements a special method has been worked out. The validity of the Wiedemann-...
We propose empirical formulae of the electrical conductivity sigma and thermal conductivity for elemental metals such as Na, Cu or Fe at room temperature ranges. Assuming the relaxation time is given by the Planck constant divided by pai and further divided by the thermal energy kT for all metal...