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Titolo:
Apatite formation on zirconium metal treated with aqueous NaOH
Autore:
Uchida, M; Kim, HM; Miyaji, F; Kokubo, T; Nakamura, T;
Indirizzi:
Kyoto Univ, Grad Sch Engn, Dept Mat Engn, Fac Engn,Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 , Fac Engn,Sakyo Ku, Kyoto 6068501, Japan Shimane Univ, Dept Mat Sci, Fac Sci & Engn, Matsue, Shimane 6908504, JapanShimane Univ Matsue Shimane Japan 6908504 Matsue, Shimane 6908504, Japan Kyoto Univ, Grad Sch Med, Dept Orthopaed Surg, Sakyo Ku, Kyoto 6068507, Japan Kyoto Univ Kyoto Japan 6068507 paed Surg, Sakyo Ku, Kyoto 6068507, Japan
Titolo Testata:
BIOMATERIALS
fascicolo: 1, volume: 23, anno: 2002,
pagine: 313 - 317
SICI:
0142-9612(200201)23:1<313:AFOZMT>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
SIMULATED BODY-FLUID; HEAT-TREATMENT; TI METAL; MECHANICAL-PROPERTIES; FORMING ABILITY; TITANIUM; BONE; IMPLANTS; ALLOYS; LAYER;
Keywords:
zirconium; alkali treatment; bioactivity; simulated body fluid (SBF); apatite; zirconia gel;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Uchida, M Kyoto Univ, Grad Sch Engn, Dept Mat Engn, Fac Engn,Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 ,Sakyo Ku, Kyoto 6068501, Japan
Citazione:
M. Uchida et al., "Apatite formation on zirconium metal treated with aqueous NaOH", BIOMATERIAL, 23(1), 2002, pp. 313-317

Abstract

Previous studies by the authors have shown that titanium metal, titanium alloys and tantalum metal which were subjected to aqueous NaOH solution and subsequent heat treatments form an apatite surface layer upon immersion in a simulated body fluid (SBF) with ion concentrations nearly equal to those in human blood plasma. These metals form the apatite surface layer even in living body, and bond to living bone through the apatite layer. In the present study, the apatite-forming ability of NaOH-treated zirconium metal in SBF has been investigated. A hydrated zirconia gel layer was formed on the surface of the zirconium metal on exposure to 1-15M NaOH aqueous solutions at 95 degreesC for 24h. It was observed that the metals treated in NaOH aqueous solutions with concentrations above 5 m form an apatite layer on their surface in SBF. This indicates that the Zr-OH group of the zirconia gel induces apatite nucleation. The present study points to the possibility of obtaining bioactive zirconium after treatment by NaOH. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 20:25:10