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Calorimetric investigation of order–disorder transition in Cu0.6Pd0.4 and Cu0.85Pd0.15 alloys

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Abstract

Order–disorder phase transitions in Cu0.6Pd0.4 and Cu0.85Pd0.15 alloys have been investigated using differential scanning calorimetry and drop calorimetry. The differential scanning calorimetry measurements show that the transition in both these alloys are reversible in nature and the enthalpy increment measurements reveal that these transitions are first order in nature. The transition temperature of first-order phase transition in Cu0.6Pd0.4 and Cu0.85Pd0.15 alloys have been evaluated to be 884(±2) and 799(±2) K, respectively, from drop calorimetric measurements. The latent heat of first-order phase transition in Cu0.6Pd0.4 alloy were evaluated to be 31.2(±0.6) and 28.9(±0.5) J g−1, by enthalpy increment and differential scanning calorimetry measurements, respectively. Similarly, the latent heat of first-order phase transition in Cu0.85Pd0.15 alloy were evaluated to be 23.1(±0.6) and 21.3(±0.5) J g−1, by enthalpy increment and differential scanning calorimetry measurements, respectively. The solidus temperatures of Cu0.6Pd0.4 and Cu0.85Pd0.15 alloys were found to be 1,457(±2) and 1,360 K, respectively.

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Authors and Affiliations

  1. Product Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India

    S. C. Parida, N. S. Anand, Ram Avtar Jat & S. G. Kulkarni

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  1. S. C. Parida
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  2. N. S. Anand
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  3. Ram Avtar Jat
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  4. S. G. Kulkarni
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Correspondence to S. C. Parida.

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Parida, S.C., Anand, N.S., Jat, R.A. et al. Calorimetric investigation of order–disorder transition in Cu0.6Pd0.4 and Cu0.85Pd0.15 alloys. J Therm Anal Calorim 112, 173–177 (2013). https://doi.org/10.1007/s10973-012-2752-1

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