钛基体表面纳米二氧化钛薄膜生长及控制  

Nano-TiO_2 films growth and control on the surface of Ti substrates

作　　者：肖帆[1] 倪爱珍[1] 柳星竹 江光强 

机构地区：[1]浙江工业大学材料科学与工程学院,浙江杭州310014

出　　处：《浙江工业大学学报》2015年第3期307-310,共4页Journal of Zhejiang University of Technology

摘　　要：使用硫酸氧钛作为钛源,通过水热法在钛基体表面控制生长纳米二氧化钛薄膜.使用扫描电子显微镜(SEM)、X射线衍射仪(XRD)和水接触角测量等,来研究不同水热条件对纳米二氧化钛形貌和结构的影响.实验结果表明:随着前驱液中硫酸氧钛浓度的增加,二氧化钛薄膜的表面形貌发生巨大改变,从棒状到针叶状,后又逐渐团聚,薄膜中金红石相和锐钛矿相的衍射峰强度都逐渐增强,且具有非常优越的润湿性.定向生长且规则排列的纳米二氧化钛薄膜,与钛基体结合牢固,显示了在骨科、牙科植入物以及光催化材料等领域的巨大潜力.Nano-titania films were controllably grown on Ti substrates via a hydrothermal method. Titanium oxysulfate （TiOSO4） was used as the Ti source. The effect of the hydrothermal conditions on the morphology and structure of the nano-titania films was studied by scanning electron microscopy （SEM）, X-ray diffraction （XRD）, and water contact angle measurements. Experimental results demonstrated that the morphology of the TiO2 was changed from rod to needle shape, then to clusters with the increase of the concentration of TiOSO4, the intensity of diffraction peaks of both the anatase phase and the rutile phase was enhanced, it shows superior wettability. The nano-titania films with directional-growth-induced ordered arrays firmly adhered to Ti substrates, indicating great potential for applications in dental implants, orthopaedics and photocatalysis.

关 键 词：钛基体 水热法 纳米二氧化钛薄膜 

分 类 号：TG146[一般工业技术—材料科学与工程]