Surface modification on titanium was carried out in order to improve its bioactivity. Pure titanium was hydrothermally treated in 0.1 mol/L MgCh solutions with different pH at 200°C for 24hr. Surface morphology, roughness, wettability and chemical composition were characterized before and after treatment. Simulated body fluid (SBF) was employed to examine in vitro bioactivity. After hydrothermal treatment, nano-sized precipitations were observed and these surfaces showed superhydrophilicity. Ti-O-Mg chemical bonding was formed on titanium surface after hydrothermal treatment, however, under high pH, Mg(OH)2 was precipitated from the solution. Hydrothermal treatment increased thickness of the oxide layer and the oxide layer was modified with magnesium (Mg). Apatite spheres were precipitated on hydrothermally treated samples after immersion in SBF for 2 days. However, the precipitation of apatite was depressed with increasing Mg concentration. The hydrothermal treatment was expected to be an effective method to fabricate titanium implant with good bioactivity.
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机译：进行钛的表面改性，以改善其生物活性。用不同的pH在0.1mol / L MgCH溶液中在200℃下以200℃的不同pH溶液进行水热处理纯钛。在治疗之前和之后表征表面形态，粗糙度，润湿性和化学组成。模拟体液（SBF）用于检查体外生物活性。在水热处理后，观察到纳米大小的沉淀，并且这些表面显示出超级水性。在水热处理后，在钛表面上形成Ti-O-Mg化学键，然而，在高pH中，将Mg（OH）2从溶液中沉淀出来。水热处理增加氧化物层的厚度和氧化物层用镁（Mg）改性。在浸入SBF后沉淀在水热处理的样品上沉淀出磷灰石球2天。然而，随着Mg浓度的增加，抑制磷灰石的沉淀。预期水热处理是一种用良好的生物活性制造钛植入的有效方法。
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