Effect of poling conditions on growth of calcium phosphate crystal in ferroelectric BaTiO3 ceramics.
Recently, ceramic materials have been given a lot of attention as candidates for implant materials, since they possess biologically favorable characteristics for osseointegration. Among them, BaTiO3 (BTO) ceramics are ferroelectric and piezoelectric after poling treatments. However, little or no information is available on the poling condition of BTO and their effect on calcium phosphate (CaP) formation. In this study, the effect of poling conditions on the formation of CaP layer was investigated. It was observed from this study that CaP was formed on negatively charged BTO surfaces. An increase in Ca/P ratio to 1.67 was observed when the poling temperature was increased above the Curie temperature. On positively charged BTO, no CaP layer was observed.
Hwang
K S
KS
Institute of Dental Science and Department of Dental Materials and Prosthodontics, College of Dentistry, Chonnam National University, 5 Hak 1 Dong, Dong-gu, Kwangju 501-190, Republic of Korea.
Song
J E
JE
Jo
J W
JW
Yang
H S
HS
Park
Y J
YJ
Ong
J L
JL
Rawls
H R
HR