Abstract
Samples of a cobalt-based alloy that underwent a surface treatment were evaluated. The samples, which were obtained by casting alloy ASTM F 75, were ground and polished on one side until a mirror finish was obtained. The samples were encapsulated in wollastonite (W) using uniaxial pressure, treated at 1 220 °C for 1 h and subsequently tempered in water. The characterisation of the sample indicated that part of the ceramic encapsulating material was mechanically incorporated on the metallic surface by growth of the oxide layer of the alloy. After thermal treatment, a series of specimens were submerged in a solution with 5-fold simulated body fluid (5SBF) for 3, 5 and 21 days. Characterisation by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) indicated nucleation and growth of a homogenous layer of apatite, beginning on the third day when the sample was submerged.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Miyazaki T, Kim H, Miyaji F, et al. Bonelike Apatite Formation on the Surface of Chemically Tantalum Substrates: Effect of Heat Treatment[J]. Bioceramics, 1997, 10: 827–832
Hench L and Wilson J. An Introduction to Bioceramics; Advanced Series in Ceramics[M]. Florida: World Scientific, 1993
Ortiz J, Cortés D, J. Escobedo J, et al. A heat Treatment Method for Obtaining Abioactive Cobalt Base Alloy[M]. Mater. Lett., 2008, 1 270: 1274–1278
Salinas A, Soria M, López H. The Effect of Carbon on the Mechanical Strength of Heat Treated Cast CO27Cr5Mo Alloys. Processing and Fabrication of Advanced Materials V[J]. The Minerals, Metals & Materials Society, 1996, 69:79
Kokubo T, Kushitani H, Sakka S, et al. Solutions Able to Reproduce in Vivo Surface-Structure Changes in Bioactive Glass-Ceramic[J]. J. Biomed. Mater. Res., 1990, 721:734
Bharati S, Sinha M and Basu D. Hidroxyapatite Coating by Biomimetic Method on Titanium Alloy Using Concentrated SBF[J]. Bull. Mater. Sci., 2005: 617–621
De Aza P and Guitian F. Phase Diagram of Wollastonite-Tricalcium Phosphate[J]. J. Am. Ceram. Soc., 1995: 1653–1656
Vercik L, C Assis, et al. Apatites Coating in vitro on Titanium-influence of the Thermal Treatment[J]. Ec. Quim., 2003, 1:12–1
Rohanizadeh R, Al-Sadeq M and LeGeos R. Preparation of Different Forms of Titanium Oxide on Titanium Surface: Effects on Apatite Deposition[J]. J. Biomed. Mater. Res., 2004: 343:352–371
Liu X, Ding C and Chu P. Mechanism of Apatite Formation on Wollastonite Coatings in Simulated Body Fluids[J]. Biomaterials, 2004, 25: 1755–1761
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Muniz, R., Ortiz, J., Luna, J. et al. In vitro evaluation with 5SBF of alloy ASTM F75 thermally treated with wollastonite. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 487–490 (2016). https://doi.org/10.1007/s11595-016-1396-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11595-016-1396-6