The thermal conductivity and Lorenz function of the tin-lead alloy system SnxPb1 −x(x = 0.85, 0.7 0.5 0.3)

✍ Scribed by Donald G. S. Chuah; R. Ratnalingam; R. J. Seward

• Book ID: 104626746
• Publisher: Springer US
• Year: 1978
• Tongue: English
• Weight: 512 KB
• Volume: 31
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00116235

✦ Synopsis

The thermal conductivity and electrical resistivity of the tin-lead alloy system 0.7, 0.5, 0.3) were measured in the temperature range 7-300 K. The thermal conductivity A was analyzed at temperature T <-20 K, assuming 1/A = a/T+/3T n, where a, ~, and n are constants. The analysis shows that n < 2, and not n >-2, which would be expected for a normal pure metal. The electrical resistivities could be represented by a T 5 relation for temperatures up to about 60 K. The characteristic temperature OR appears to decrease with increasing weight percent of lead. The total Lorenz functions were high, indicating the presence of phonon conductivity. The phonon conductivity Ag appears to vary with T, and can be represented by Ag = a/T n (a>0) and n~ 2.