Low Temperature Synthesis of Porous NZP Ceramics

摘要: Porous phase-pure NaZr2(PO4)3 monoliths were synthesized at 850°C from gels that precipitated as a consequence of mixing water-soluble precursors. The sintering temperature was limited to permit densification in range where NZP exhibits low coefficient thermal expansion. Attempts maximize mechanical properties made by both physical and chemical means. Particulate hydroxyapatite (HAp) physically blended with the template crystallization NZP. Copper nitrate dissolved into solution aid stimulate liquid-phase during firing. without these additives attained specific surface area 30 m2/g. addition HAp reduced internal 5 X-ray diffraction scanning electron microscopy did not detect presence fired samples, indicating it had been consumed decomposed CuO its resulted enhanced greater strengths. 5% (as copper nitrate) together 40% volume shrinkage tensile strength for this composition 20 MPa compared approximately 8 compositions additives.