TY - GEN
T1 - Formation of hydroxyapatite on nickel-free high-nitrogen stainless steel by chemical solution deposition method in neutral/alkaline solution
AU - Sasaki, Makoto
AU - Inoue, Motoki
AU - Katada, Yasuyuki
AU - Hiromoto, Sachiko
AU - Taguchi, Tetsushi
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - Calcium phosphate (CaP) was formed on glutamic acid-modified nickel-free high-nitrogen stainless steel (HNS) by a chemical solution deposition method in neutral/alkaline solution. Modification of glutamic acid on the surface of HNS was performed using trisuccinimidyl citrate (TSC) as a linker. The glutamic acid-derived carboxyl groups introduced on HNS initiated rapid nucleation of CaP during each treatment at pH 7.3 or 8.9. X-ray diffraction analysis and Fourier transform infrared spectra showed each CaP deposited on glutamic acid-immobilized HNS after 24 hrs was identified as low-crystallinity calcium-deficient carbonate-containing hydroxyapatite (HAp). A significant difference in the microstructure between the two pH values was observed; HAp deposited at pH 7.3 was composed of plate-like crystals, whereas that at pH 8.9 was chestnut-like crystals. Therefore, the pH value of the solution played an effective role in controlling the microstructure of HAp deposited on glutamic acid-immobilized HNS.
AB - Calcium phosphate (CaP) was formed on glutamic acid-modified nickel-free high-nitrogen stainless steel (HNS) by a chemical solution deposition method in neutral/alkaline solution. Modification of glutamic acid on the surface of HNS was performed using trisuccinimidyl citrate (TSC) as a linker. The glutamic acid-derived carboxyl groups introduced on HNS initiated rapid nucleation of CaP during each treatment at pH 7.3 or 8.9. X-ray diffraction analysis and Fourier transform infrared spectra showed each CaP deposited on glutamic acid-immobilized HNS after 24 hrs was identified as low-crystallinity calcium-deficient carbonate-containing hydroxyapatite (HAp). A significant difference in the microstructure between the two pH values was observed; HAp deposited at pH 7.3 was composed of plate-like crystals, whereas that at pH 8.9 was chestnut-like crystals. Therefore, the pH value of the solution played an effective role in controlling the microstructure of HAp deposited on glutamic acid-immobilized HNS.
KW - Chemical solution deposition
KW - Hydroxyapatite
KW - Nickel-free high-nitrogen stainless steel
KW - Surface modification
UR - http://www.scopus.com/inward/record.url?scp=84871325002&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871325002&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.529-530.237
DO - 10.4028/www.scientific.net/KEM.529-530.237
M3 - Conference contribution
AN - SCOPUS:84871325002
SN - 9783037855171
T3 - Key Engineering Materials
SP - 237
EP - 242
BT - Bioceramics 24
PB - Trans Tech Publications Ltd
T2 - 24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012
Y2 - 21 October 2012 through 24 October 2012
ER -