TY - JOUR
T1 - Formation of structure and surface morphology in hydroxyapatite types of ceramics during sintering
AU - Prieto-Valdés, J. J.
AU - Alfaro Hernández, S.
AU - Rueda Morales, G.
AU - Gortcheva, V. P.
PY - 1997/8
Y1 - 1997/8
N2 - Hydroxyapatite powders with Ca/P ratios of 1.67 and 1.5 were processed by ceramic methods and studied during sintering using X-ray diffraction and atomic force microscopic methods, paying particular attention to the structural and surface morphology formations of the ceramics during sintering. For stoichiometric samples sintering starts at 1000°C through the formation of a quasihexagonal grain configuration. This morphology is conserved after the decomposition processes of hydroxyapatite in the range of 1200-1450°C. For calcium-deficient hydroxyapatite, sintering starts at temperatures close to 800°C through the formation of a fibrous structure. After reaching 1450°C these samples are composed of tricalcium phosphate, thus conserving the fibrous morphology, which resembles biological hard tissue.
AB - Hydroxyapatite powders with Ca/P ratios of 1.67 and 1.5 were processed by ceramic methods and studied during sintering using X-ray diffraction and atomic force microscopic methods, paying particular attention to the structural and surface morphology formations of the ceramics during sintering. For stoichiometric samples sintering starts at 1000°C through the formation of a quasihexagonal grain configuration. This morphology is conserved after the decomposition processes of hydroxyapatite in the range of 1200-1450°C. For calcium-deficient hydroxyapatite, sintering starts at temperatures close to 800°C through the formation of a fibrous structure. After reaching 1450°C these samples are composed of tricalcium phosphate, thus conserving the fibrous morphology, which resembles biological hard tissue.
UR - http://www.scopus.com/inward/record.url?scp=3342882049&partnerID=8YFLogxK
U2 - 10.1142/S0218625X97000663
DO - 10.1142/S0218625X97000663
M3 - Artículo
SN - 0218-625X
VL - 4
SP - 671
EP - 677
JO - Surface Review and Letters
JF - Surface Review and Letters
IS - 4
ER -