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Il Nuovo Cimento (1955-1965)

, Volume 4, Issue 1, pp 123–133 | Cite as

On intermetallic diffusion in gold-lead system

  • A. Ascoli
  • E. Germagnoli
  • L. Mongini
Article

Summary

Diffusion of gold in lead has been investigated by means of radioactive tracers method in the range of temperatures between 190 and 300 ‡C. In this temperature interval experimental values of the diffusion coefficientD fit the equation\(D = 2.8 \cdot 10^{ - 3} \exp \left[ {\frac{{8.91 \cdot 10^{ - 3} }}{{RT}}} \right]cm^2 s^{ - 1} \) whence an activation energyQ = (8.91 ± 0.18) · 103 cal mole-1 is obtained.

Riassunto

II processo di diffusione intermetallica di oro in piombo è stato studiato coll’impiego del metodo dei tracoianti radioattivi nell’intervallo di temperatura compreso tra 190 e 300 ‡C. I valori sperimentali del coefficiente di diffusione D possono essere rappresentati nel predetto intervallo di temperatura dalla relazione\(D = 2.8 \cdot 10^{ - 3} \exp \left[ {\frac{{8.91 \cdot 10^{ - 3} }}{{RT}}} \right]cm^2 s^{ - 1} \) Di qui l’energia di attivazione del processo risulta essere (8.91 ± 0,18) · 103 cal mole-1.

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Copyright information

© Società Italiana di Fisica 1956

Authors and Affiliations

  • A. Ascoli
    • 1
  • E. Germagnoli
    • 1
  • L. Mongini
    • 1
  1. 1.Laboratory CISEMilano

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