Apatite-Forming Ability of Titanium Metal Enriched with Calcium Ion on its Surface

Abstract:

In order to study method for preparing bioactive titanium metal, calcium ions were attempted to be incorporated into the surface of the titanium metal by ion exchange method. Titanium metal was soaked in 5M NaOH solution and 100mMCaCl2 solution and subjected to heat treatment. About 5 atom% of Na was incorporated into the surface of the titanium metal by the NaOH treatment This Na was completely replaced with calcium ion by the CaCl2 treatment and maintained even after the heat treatment. Critical detaching strength of the surface layer to the substrate of NaOH-treated titanium metal was a little increased by the CaCl2 treatment and remarkably increased by the heat treatment. Apatite-forming ability of the NaOH-treated titanium metal in SBF was increased by the CaCl2 treatment, but decreased by the subsequent heat treatment.

• Periodical: Key Engineering Materials (Volumes 361-363)
• Pages: 581-584
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.361-363.581
• Online since: November 2007
• Authors: Takashi Kizuki, Takahiro Kawai, Hiroaki Takadama, Tomiharu Matsushita, Tadashi Kokubo, Takashi Nakamura
• Keywords: Apatite, Calcium, Ion-Exchange, Titanium (Ti)

References

[1] Kokubo T, Miyaji F, Kim HM, J Am Ceram Soc, 79: 1127-1129 (1996).

[2] Nakagawa M, Zhang L, Udoh K, Matsuya S and Ishikawa K, J Mater Sci Mater Med, 16: 985-91 (2005).

[3] Armitage DA, Mihoc R, Tate TJ, McPhail DS, Chater R, Hobkirk JA, Shinawi L, Jones FH, Appl Sur Sci, 253: 4085-93 (2007).

DOI: 10.1016/j.apsusc.2006.09.006

[4] Park JW, Park KB, Suh JY, Biomaterials, 28: 3306-13 (2007).

[5] Tsai CC, Teng H, Chem Mater, 28: 367-73 (2006). Fig. 5 SEM photographs of surfaces of titanium metals subjected to various treatments and soaked in SBF for 1 day.