Peculiarities in sintering behavior of Ca-deficient hydroxyapatite nanopowders
Veselinović, Ljiljana M.
Stojanović, Zoran S.
Maček Kržmanc, Marjeta
Škapin, Srečo Davor
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We report unusual sintering behavior of Ca-deficient hydroxyapatite processed with different heating rates; particularly, faster heating resulted in higher densification. We hypothesize that faster heating delays formation of β-tricalcium phosphate which yields to unobstructed densification in intermediate sintering stage, allowing further tailoring of both microstructure and phase composition (hydroxyapatite/tricalcium phosphate).
Keywords:bioceramics / sintering / phase transformations / microstructure / Ca-deficient hydroxyapatite
Source:Materials Letters, 2012, 331-335