Effect of Adding MgO on Microstructure of Zirconia Toughened Alumina (ZTA) Composite for Medical Applications
نویسندگان
چکیده
Zirconia toughened alumina (Biolox delta) is a new-generation ceramic with four times the strength of alone, used in artificial joints. The composite ZTA, consisting 82 wt. %Al2O3, 17 % ZrO2, 0.5 Cr2O3, and SrO, was made using sol-gel process, starting salts. To investigate effects MgO on ZTA microstructure, two concentrations (0.25 %) were added to biolox during gelation study microstructure. Powders sintered air for 2 hrs. at 1450 ºC. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDX) characterize sintering powders. + xMgO structural characteristics differ from pure ZTA's. According XRD calculations, grainsize decreased 41.82 nm 31.88 26.83 increasing concentration, but specific surface area (SSA) increased 40.63 54.79 m2/gm while crystallization improved. SEM examination shows has homogeneous dispersion shaped particles. EDX test composite's element distribution. ZTA+ powders more antibacterial than inhibits bacterial activity grain formation sintering, which makes it good choice medical applications, mainly
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ژورنال
عنوان ژورنال: Ma?allat? al-handasat? wa-al-tikn?l??iy?
سال: 2022
ISSN: ['1681-6900', '2412-0758']
DOI: https://doi.org/10.30684/etj.2022.134694.1245