The Influence Of additive Erbium on Thermodynamic Behaviors of Aluminum - Zinc Alloys

Subject Areas :

Reza  Amini Najafabadi ¹ (استادیار، بخش مهندسی مواد و متالورژی دانشکده فنی و مهندسی گلپایگان، گلپایگان، اصفهان)
Mohammad  Razazi Boroujeni ² (استادیار، دانشکده مهندسی مواد، واحد مجلسی، دانشگاه آزاد اسلامی، شهر جدید مجلسی، اصفهان)
Izatulla  Ganiev ³ (استاد، آکادمی علوم جمهوری تاجیکستان، بخش مواد مقاوم به خوردگی، دوشنبه، تاجیکستان)
Ziadulla  Obidov ⁴ (دانشیار، دانشگاه تکنیکی عاصمی تاجیکستان، بخش مواد مقاوم به خوردگی، دوشنبه، تاجیکستان)

Received: 2016-09-13 Accepted : 2016-09-13 Published : 2016-08-22

Keywords: Entropy, Enthalpy, Thermal conductivity, Zn5Al, Zn55Al, Alloy, Specific Heat Capacity, Free gypsum Energy, Thermodynamic parameters,

Abstract :

Thermal conductivity, specific heat capacity, enthalpy, entropy and free Gibbs energy of Zn55Al and Zn5Al alloys  with additive  erbium were studied using a new device according to cooling newton's law. It was observed that with increasing temperature, specific heat capacity, enthalpy and entropy of the alloys increase. A sharp reduction in thermal conductivity and specific heat capacity showed that in all the systems, there is the second order phase transformation about temperatures of 520 to 530 K. The thermodynamic factors are calculated.

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Z. Nizomov, B. N. Gulov, A. D. Saidov & H. Avezov, “Measurement of specific heat of solids with cooling method”, National, Tajikistan, pp. 136-141, 2010.