L.  Kastrati, N.  Syla, G.  Nafezi, N.  Hasi, 
    Experimental Study of Phase Relations in the ZrO<SUB>2</SUB>-Nd<SUB>2</SUB>O<SUB>3</SUB>-Y<SUB>2</SUB>O<SUB>3</SUB> System,
    Research Journal of Applied Sciences,
    Volume 8,Issue 5,
    2013,
    Pages 271-277,
    ISSN 1815-932x,
    rjasci.2013.271.277,
    (https://makhillpublications.co/view-article.php?doi=rjasci.2013.271.277)
    Abstract: The aim of this study is to investigate phase equilibria in the ZrO<SUB>2</SUB>-Nd<SUB>2</SUB>O<SUB>3</SUB>-Y<SUB>2</SUB>O<SUB>3</SUB> System in the temperature range 1250-1600&deg;C for the Nd<SUB>2</SUB>O<SUB>3</SUB> rich compositions and to study transformations of three phase assemblage consisting of the Nd<SUB>2</SUB>O<SUB>3</SUB> hexagonal phase A, monoclinic phase B and pyrochlore under increasing temperature. The samples were characterized by means of X-Ray Diffraction (XRD), Scanning Electron Microscopy with Energy Dispersive X-ray analysis (SEM/EDX) and Differential Thermal Analysis (DTA). The results of XRD show that at 1250 and 1400&deg;C the equilibrium phases are B+Pyr and probably Nd<SUB>2</SUB>O<SUB>3</SUB>-A is also present in small amount (~1%). At 1600&deg;C equilibrium phases are Flu+Nd<SUB>2</SUB>O<SUB>3</SUB>-A. Therefore, two phase transformations occur in the range 1400-1600&deg;C. DTA experiment was performed in range 25-1700&deg;C and two phase transformations have been found: Pyr &rarr;Flu at ~1471&deg;C and B&rarr;A at ~1608&deg;C. This was confirmed by XRD and SEM/EDX.
    Keywords: ZrO2-Nd2O3-Y2O3 System;phase equilibria;XRD;DTA;X-rays