Thermal Conductivities of Pure Metals at Low Temperatures. I. Aluminum

1951 ◽  
Vol 84 (5) ◽  
pp. 994-996 ◽  
Author(s):  
F. A. Andrews ◽  
R. T. Webber ◽  
D. A. Spohr
Keyword(s):  
Low Temperatures ◽  
Pure Metals ◽  
Thermal Conductivities

Thermal Conductivities of Pure Metals at Low Temperatures: Mercury

1957 ◽  
Vol 106 (5) ◽  
pp. 927-933 ◽  
Author(s):  
R. T. Webber ◽  
D. A. Spohr
Keyword(s):  
Low Temperatures ◽  
Pure Metals ◽  
Thermal Conductivities

scholarly journals XI. Bakerian lecture.―The effect of temperature and pressure on the thermal conductivities of solids.—Part II. The effects of low temperatures on the thermal and electrical conductivities of certain approximately pure metals and alloys

1908 ◽  
Vol 208 (427-440) ◽  
pp. 381-443 ◽  
Keyword(s):  
Low Temperatures ◽  
Metals And Alloys ◽  
Effect Of Temperature ◽  
The Third ◽  
Electrical Conductivities ◽  
Pure Metals ◽  
Temperature And Pressure ◽  
Thermal Part ◽  
Thermal Conductivities

During the last fifty years a considerable amount of attention has been bestowed on the question of the variations of the thermal and electrical conductivities of metals with the temperature, hut the results obtained by different observers, especially of thermal conductivities, differed so widely from each other that the answer to the thermal part of the question long remained doubtful. In recent years, however, there has been an accumulation of evidence in favour of a slight decrease of thermal con­ductivity with increase of temperature from 0°C. to 100°C. in the case of most of the metals. The experiments of Lorenz, and more especially the careful work of Jager and Diesselhorst have contributed greatly to this result. In both these cases the experiments were limited to the range of temperature between 0°C. and 100°C., and it seemed advisable, in view of the importance of both questions in the electronic theories of conduction of heat and electricity in metals, to extend the range over which the theories could be tested, particularly in the direction of low temperatures, where the experiments of Dewar and Fleming had already furnished information as to the electrical conductivities. The present paper contains an account of the measurements of the thermal and electrical conductivities carried out for this purpose, and the results obtained. The first section deals with measurements of the thermal, the second with measurements of the electrical, conductivities of certain metals and alloys, and the third section compares the results with the electronic theories.

scholarly journals The thermal conductivities of certain approximately pure metals and alloys at high temperatures

1931 ◽  
Vol 134 (823) ◽  
pp. 57-76 ◽  
Keyword(s):  
Heat Flow ◽  
High Temperatures ◽  
Heat Losses ◽  
Metals And Alloys ◽  
Maximum Temperature ◽  
Internal Heating ◽  
Heating Coil ◽  
Pure Metals ◽  
Guard Tube ◽  
Thermal Conductivities

Measurements have been made by several observers on the thermal conductivities of metals and alloys up to high temperatures. Heat losses to the surroundings become large at high temperatures, hence the guard tube method, which to a great extent eliminates these losses, has been popular for work at these temperatures. This method was described and used by Berget in 1888, and later by Wilkes. These observers measured the rate of heat flow by a calorimetric method, which is not suitable for work at high temperatures. Honda and Simidu, using an internal heating coil, determined the heat flow from the energy input and were able to obtain results for nickel and steel to over 800°C. More recently, Schofield, using the guard tube method with an internal heating coil, has obtained results up to a maximum temperature of 700°C. with five metals. The present work was undertaken with a view to continuing the work of Professor C. H. Lees on the effect of temperatures between —160°C. and 15°C. on the thermal conductivities of nine metals and six alloys.

LORENZ NUMBERS OF PURE ALUMINUM, SILVER, AND GOLD AT LOW TEMPERATURES

1963 ◽  
Vol 41 (12) ◽  
pp. 2026-2033 ◽  
Author(s):  
E. W. Fenton ◽  
J. S. Rogers ◽  
S. B. Woods
Keyword(s):  
Low Temperatures ◽  
Experimental Error ◽  
Pure Aluminum ◽  
Electron Interaction ◽  
Lorenz Number ◽  
Electrical Conductivities ◽  
Lattice Waves ◽  
Pure Metals

Measurements have been made of the thermal and electrical conductivities at low temperatures on specimens of pure aluminum, silver, and gold. The resistivities caused by scattering of the electrons by lattice waves and by impurities have been separated and the Lorenz number has been deduced for these specimens. The Lorenz number calculated from the impurity resistivities for these pure metals agrees with the theoretical Sommerfeld value within an experimental error of about [Formula: see text]. The possible influence of an electron–electron interaction on these results is discussed.

Semiautomatic bridge for high‐precision dc resistance measurements on pure metals at low temperatures

1979 ◽  
Vol 50 (2) ◽  
pp. 161-164 ◽  
Author(s):  
H. van Kempen ◽  
H. W. Neyenhuisen ◽  
J. H. J. M. Ribot
Keyword(s):  
High Precision ◽  
Low Temperatures ◽  
Pure Metals ◽  
Dc Resistance
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