High-temperature phase relations of ZrN–ZrO2–Y2O3 ternary system
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Zirconium nitride (ZrN) ceramics were prepared via hot pressed sintering (HP) at 1750 °C in N2 atmosphere with ZrO2–Y2O3 as sintering additive. X-ray diffraction was applied to analyze the phase composition of the as-prepared ceramics to study the high temperature phase relation in ZrN–ZrO2–Y2O3 ternary system and establish ZrN–ZrO2–Y2O3 ternary phase diagrams. The results show that ZrN and tetragonal ZrO2 (t-ZrO2) solid solution, face-centered cubic ZrO2 (c-ZrO2) solid solution, body-centered cubic Y2O3 (c-Y2O3) solid solution coexist in the system of ZrN–ZrO2–Y2O3.
Keywordshigh temperature phase relations zirconium nitride (ZrN) ternary system X-ray diffraction
This work was financially supported by the National Natural Science Foundation of China (No. 51662002), the Scientific Research Plan of Ningxia (2014), the Key Research Project of Ningxia Colleges and Universities (NGY2015158), and Ningxia Leading Talent Project of the Scientific and Technological Innovation (2015).
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