Nano Pores Evolution in Hydroxyapatite Microsphere during Spark Plasma Sintering
2011 (English)In: Science of Sintering, ISSN 0350-820X, Vol. 43, no 1, 39-46 p.Article in journal (Refereed) Published
Micron-spherical granules of hydroxyapatite (HAp) nanoparticles were prepared by powder granulation methods. Through subsequent sintering, porous HAp microspheres with tailored pore and grain framework structures were obtained. Detailed microstructure investigation by SEM and TEM revealed the correlation of the pore structure and the necking strength with the sintering profiles that determine the coalescence features of the nanoparticles. The partially sintered porous HAp microspheres containing more than 50% porosity consisting of pores and grains both in nano-scale are active in inducing the precipitation of HAp in simulated body fluid. The nano-porous HAp microspheres with an extensive surface and interconnecting pores thus demonstrate the potential of stimulating the formation of collagen and bone and the integration with the newly formed bones during physiological bone remodeling.
Place, publisher, year, edition, pages
2011. Vol. 43, no 1, 39-46 p.
Bioceramics, Porous materials, Spark plasma sintering, Microstructure
Metallurgy and Metallic Materials Materials Engineering
IdentifiersURN: urn:nbn:se:su:diva-66860DOI: 10.2298/SOS1101039LISI: 000294191600005OAI: oai:DiVA.org:su-66860DiVA: diva2:469076
authorCount :32011-12-222011-12-212011-12-22Bibliographically approved