| Title |
Effect of MgO Addition on the Monoclinic to Tetragonal Transition of ZrO2 Fabricated by High Energy Ball Milling |
| Authors |
(Ashutosh Sharma); (Byungmin Ahn) |
| DOI |
https://doi.org/10.3365/KJMM.2018.56.10.718 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
ball mill; zirconia; microstructure; ceramics; crystallite size; strain |
| Abstract |
In this work, we studied the formation of partially stabilized zirconia by a high energy ball milling (HEBM) approach. Zirconia powder was mixed with 8 mol% MgO and the powder mixture was milled for 10 hours. The structural and morphological evolutions of the powder particles were studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The Williamson-Hall method was used to calculate the crystallite size of the zirconia powder particles. The results show that the tetragonal zirconia phase (t-ZrO2) can be very well stabilized after the addition of 8 mol% MgO. The formation of t-ZrO2 was identified by XRD analysis after 3 hours of ball milling. In addition, SEM results demonstrated a great refinement in the size of the ZrO2 particles whose distribution was in the sub-μm to nm range indicating better microstructural characteristics.(Received July 18, 2018; Accepted August 16, 2018) |