Properties of hydroxyapatite/zirconium oxide nanocomposites

• Main Authors: Winatsara Kantana, Parkpoom Jarupoom, Kamonpan Pengpat, Sukum Eitssayeam, Tawee Tunkasiri, Gobwute Rujijanagul
• Format: Journal
• Published: 2018
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84875734858&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/47957
• Institution: Chiang Mai University

Effects of zirconium oxide (ZrO 2 ) nanoparticles additive on the microstructure and physical properties of hydroxyapatite (HA) were investigated. The HA powder was derived from natural bovine bone by a sequence of thermal processes. The composites containing nanoparticles of ZrO 2 (0.2-1.0 vol%) were fabricated by a solid-state reaction mixed oxide method. All samples showed traces of HA, beta-tricalcium phosphate (β-TCP) and alpha-tricalcium phosphate (α-TCP) phases while the x≥0.1 samples also showed ZrO 2 phase. Amount of β-TCP and α-TCP phases tend to decrease with ZrO 2 . The additive inhibited grain growth as a result of a decrease in grain size. However, the x=0.2 sample exhibited higher hardness value which is consistent with the density data. In addition, bioactivity test suggested that the additive promoted an apatite forming with the values of Ca/P close to the value obtained from HA. © 2013 Elsevier Ltd and Techna Group S.r.l.