Thermodynamics of lead-free solder Bi-In-Sn alloys (Articolo in rivista)

Type
Label
  • Thermodynamics of lead-free solder Bi-In-Sn alloys (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.calphad.2006.07.003 (literal)
Alternative label
  • B. Brunetti, D. Gozzi, M.Iervolino, V. Piacente, G. Zanicchi, N. Parodi, G. Borzone (2006)
    Thermodynamics of lead-free solder Bi-In-Sn alloys
    in Calphad
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • B. Brunetti, D. Gozzi, M.Iervolino, V. Piacente, G. Zanicchi, N. Parodi, G. Borzone (literal)
Pagina inizio
  • 431 (literal)
Pagina fine
  • 442 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 30 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Gozzi: Università La Sapienza Iervolino :Università di Genova Piacente : Università La Sapienza Zanicchi: Università di Genova Parodi: Università di Genova Borzone :Università di Genova (literal)
Titolo
  • Thermodynamics of lead-free solder Bi-In-Sn alloys (literal)
Abstract
  • The thermodynamics of Bi-In-Sn lead-free solder alloys has been studied by two different experimental techniques: torsion-effusion and differential scanning calorimetry. The results show that this ternary system at fixed Bi composition, X-Bi = 0.20, and 565 K behaves as a non-ideal system with exothermic Delta(mix) H-T(0) passing through a minimum at X-In = 0.58 and X-sn = 0.22. In the whole range of the quantity X-Sn/(X-Sn + X-In) T and at 1050 K the average value of the bismuth activity is 0.14 +/- 0.02 which implies an average activity coefficient of Bi equal to 0.70 +/- 0.01. The Bi activity in ternary alloys at 1000 K with variable X-Bi and fixed ratio rho = X-Sn/X-In = 0.85 has been measured. The excess integral free energy change for the mixing, Delta(mix) G(T)(0) (xs), has also been evaluated by making use of both the torsion-effusion experimental and literature data T for Bi-Sn and Bi-In binary systems. Under these conditions, the ternary system is not a regular solution and the entropy contribution to the free energy of mixing is dominating the Gibbs energy. (literal)
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