Materials and Technology Department, Faculty of Engineering Guaratinguetá, São Paulo State University, UNESP, Av. Dr. Ariberto Pereira da Cunha, 333, Pedregulho, Guaratinguetá, SP 12516-410, Brazil.
J Mater Sci Mater Med. 2011 Nov;22(11):2457-65. doi: 10.1007/s10856-011-4434-0. Epub 2011 Sep 10.
Titanium and its alloys have been used as bone-replacement implants due to their excellent corrosion resistance and biocompatibility. However, a titanium coating is a bioinert material and cannot bond chemically to bone tissue. The objective of this work was to evaluate the influence of alkaline treatment and heat treatment on the formation of calcium phosphate layer on the surface of a Ti-7.5Mo alloy after soaking in simulated body fluid (SBF). Thirty six titanium alloy plates were assigned into two groups. For group I, samples were immersed in a 5.0-M NaOH aqueous solution at 80°C for 72 h, washed with distilled water and dried at 40°C for 24 h. For group II, after the alkaline treatment, samples were heat-treated at 600°C for 1 h in an electrical furnace in air. Then, all samples were immersed in SBF for 7 or 14 days to allow the formation of a calcium phosphate coating on the surface. The surfaces were characterized using SEM, EDS, AFM and contact angle measurements.
钛及其合金由于具有优异的耐腐蚀性和生物相容性，已被用作骨替代植入物。然而，钛涂层是一种生物惰性材料，不能与骨组织进行化学结合。本工作的目的是评估碱处理和热处理对 Ti-7.5Mo 合金浸泡在模拟体液 (SBF) 后表面形成磷酸钙层的影响。将 36 个钛合金板分为两组。对于组 I，将样品浸入 5.0-M NaOH 水溶液中，在 80°C 下处理 72 小时，用蒸馏水冲洗并在 40°C 下干燥 24 小时。对于组 II，碱处理后，将样品在空气中的电炉中于 600°C 下热处理 1 小时。然后，所有样品都在 SBF 中浸泡 7 或 14 天，以在表面形成磷酸钙涂层。使用 SEM、EDS、AFM 和接触角测量来表征表面。
