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Quantitative Differential Thermal Analysis at Elevated Pressures

  • Prakash C. Jain
  • Deoraj Chaubey

Abstract

A simple, yet sensitive, form of apparatus for quantitative differential thermal analysis at elevated pressures is described. It has been calibrated and operated satisfactorily at pressures upto 6 Kb and temperatures upto 600 K. It has been used to measure the melting point of indium as a function of pressure upto 6 Kb. The measured values are in good agreement with earlier measurements. For quantitetive measurements, the system has been used to construct phase diagrams for KNO3 and NH4NO3. The dependence of change in enthalpy for a phase transition on pressure has been investigated. The results are in agreement with the results computed from the PVT data.

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References

  1. (1).
    A. Jayaraman, W. Klement (Jr.), R. C. Newton and G.C. Kennedy, J. Phys. Chenu Solids 24 (1963) 7.CrossRefGoogle Scholar
  2. (2).
    G.C. Kennedy and R. C. Newton, Solids under Pressure in Eds. W. Paul, D.M. Warschauer (McGraw Hill Book Co. New York, 1963).Google Scholar
  3. (3).
    D.C. Bessett and B. Turner, Nature Phys. Sci., 240 (1972) 146 ibid Philos. Mag., 29 (1974) 925.CrossRefGoogle Scholar
  4. (4).
    S.K. Bhateja and K.D. Pal, J. Macromol Sci. Revs. Macro-mol. Chem. Cl3(1) (1975) 77.CrossRefGoogle Scholar
  5. (5).
    R.N. Gupta, P.C. Jain, V. S. Nanda and A. S. Reshamwala, J. Appl. Polym. Sci., 21, (1977) 2621.CrossRefGoogle Scholar
  6. (6).
    P.C. Jain, W. Wunderlich and D.R. Chaubey, J. Polym. Sci. A-2, 15 (1977) 2271.Google Scholar
  7. (7).
    B. Turner, Hjgh Temp. High Press, 5 (1973) 273.Google Scholar
  8. (8).
    M. L. Mc Daniel, S.E. Babb (Jr.) and G.J. Scott, J. Chem. Phys. 37 (1962) 822.CrossRefGoogle Scholar
  9. (9).
    P.W. Bridgman, Int. critical Tables, Chief Ed. E.W. Washburn (McGraw Hill Book Co., New York and London, (1928) Vol.4, p. 9.Google Scholar

Copyright information

© Springer Basel AG 1980

Authors and Affiliations

  • Prakash C. Jain
    • 1
  • Deoraj Chaubey
    • 1
  1. 1.Department of Physics and AstrophysicsUniversity of DelhiDelhiIndia

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