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Bioactive Ti metal with Ca-enriched surface layer able to release Sr ions

机译:生物活性Ti金属与Ca富集的表面层,能够释放SR离子

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Bioactive Ti metal able to release Sr ions was prepared by chemical and heat treatments of Ti metal. Ti metal was initially soaked in 5M NaOH solution to form sodium hydrogen titanate. It was soaked in a mixed solution of CaCl_2 and SrCl_2 to replace its Na ions with Ca and Sr ions at a given range from 0.18 to 1.62 in Sr/Ca ratio. When it was heat-treated at 600 °C, it formed Sr-containing calcium titanate (SrCT) and rutile. The apatite formation in SBF of the treated metal was low, but increased markedly by subsequently soaking the metal in 1 M SrCl_2 solution at 80 °C. Thus, the treated metal gradually released Sr ions into phosphate-buffered saline up to 0.9 ppm. It is expected that the Ti metal formed with the bioactive SrCT layer could release Sr ions in a living body to promote bone formation, and bond to a living bone through an apatite.
机译:通过Ti金属的化学和热处理制备能够释放SR离子的生物活性Ti金属。最初在5M NaOH溶液中浸泡Ti金属以形成钛酸钠。将其浸泡在CaCl_2和SrCl_2的混合溶液中,以在Sr / Ca比中以0.18至1.62的给定范围内用Ca和Sr离子替换其Na离子。当它在600℃热处理时,它形成含SR钛酸钙(SRCT)和金红石。经处理的金属的SBF中的磷灰石形成低,但随后在80℃下浸泡1M SRCl_2溶液中的金属,显着显着增加。因此,经处理的金属逐渐释放到磷酸盐缓冲盐水的Sr离子,高达0.9ppm。预期与生物活性SRCT层形成的Ti金属可以在活体中释放SR离子以促进骨骼形成,并通过磷灰石键合到活骨。

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