Quantitative Phase Analysis of Polymorphs in MgO-Partially Stabilized-ZrO2 using X-Ray Diffraction

Authors : Hüseyin Ş. SOYKAN, Yılmaz KARAKAŞ

Pages : 191-197

View : 15 | Download : 4

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, quantitative analysis of polymorphs in ZrO2-based ceramics using powder X-ray diffraction was carried out. For this purpose, three partially stabilized ZrO2 compositions having 8-10 mol% MgO were prepared. Characteristic X-ray patterns were obtained by employing an X-ray diffractometer using Cu Kalpha radiation in the angle range 27o \leq 2q \leq 33o. The values used for the X-ray intensities were calculated from relevant peaks using the method of approximate triangles. Volume fractions of ZrO2 phases were then determined in accordance with the polymorphic method. From the experimental results, it is concluded that the volume fraction of the m-phase decreased with an increase in the MgO content of the samples and an additional aging treatment led to increments in the m-phase volume fraction for all the compositions via t-m phase transformation in the material. Hence, the thermal shock resistance of the material is improved.
Keywords : Zirconia, X Ray Diffraction, Quantitative Phase Analysis