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Low‐Temperature Processing of Dense Hydroxyapatite–Zirconia Composites
Author(s) -
Nayak Yougojoti,
Rana Raghunath,
Pratihar Swadesh,
Bhattacharyya Santanu
Publication year - 2008
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2008.02180.x
Subject(s) - materials science , calcination , cubic zirconia , composite material , fourier transform infrared spectroscopy , composite number , flexural strength , chemical engineering , ceramic , catalysis , biochemistry , chemistry , engineering
Hydroxyapatite (HA)–YTZP (2, 5, 7.5, and 10 wt% ZrO 2 ) composite powders prepared from inorganic precursors were characterized by FTIR, DSC/TG, XRD, and TEM. The calcined powders had HA and t / c ‐ZrO 2 , which undergo structural changes between 650°C and 1050°C. TEM of calcined powder showed larger HA particles (100 nm) and smaller ZrO 2 particles (≤50 nm). HA and HA–2 wt% ZrO 2 ‐sintered samples had 98% density and it was (90–95%) for HA–5, 7.5, and 10 wt% ZrO 2 . The bending strength of HA–2wt% ZrO 2 composites was 72 MPa. The grain sizes of HA showed a refinement with ZrO 2 addition.