Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-05 Kraków, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Apr;89:11-7. doi: 10.1016/j.saa.2011.12.018. Epub 2011 Dec 22.
In this work, samples in form of bulk ones and thin films were obtained using the sol-gel method. The bulk samples were heated at different temperatures (500 °C, 850 °C and 1100 °C) corresponding to the annealing process of coatings, deposited on different substrates by dipping and pulling out samples from the proper sol with the stable speed. Thin films of both Al2O3-TiO2 and Al2O3-TiO2-SiO2 systems were deposited on carbon, steel and titanium substrates in two different ways: as single layers obtained from Al2O3 sol, TiO2 sol and Al2O3 sol or deposited as mixed coatings from Al2O3-TiO2 sol as well as Al2O3-TiO2-SiO2 one. All bulk samples were studied by the FTIR spectroscopy and the X-ray diffractometry while thin films were also investigated by the electron microscopy. In the IR spectra of Al2O3-TiO2 samples, as well as gels and coatings, bands due to the vibrations of AlO bonds of the octahedrally and tetrahedrally coordinated aluminum were observed. The IR spectra of samples of Al2O3-TiO2-SiO2 system differ from that of Al2O3-TiO2 ones in presence of bands assigned to the SiO bond vibrations and in positions of bands due to AlO bond vibrations. In all spectra of bulk samples and coatings, the positions of TiO bond vibrations were ascribed basing on the IR spectra of the pure anatase and rutile.
在这项工作中，使用溶胶-凝胶法获得了块状和薄膜两种形式的样品。块状样品在不同温度（500°C、850°C 和 1100°C）下加热，对应于涂层的退火过程，通过浸渍和以稳定的速度从适当的溶胶中抽出样品，在不同的基底上沉积。Al2O3-TiO2 和 Al2O3-TiO2-SiO2 体系的薄膜分别在碳、钢和钛基底上以两种不同的方式沉积：单层由 Al2O3 溶胶、TiO2 溶胶和 Al2O3 溶胶获得，以及由 Al2O3-TiO2 溶胶以及 Al2O3-TiO2-SiO2 溶胶混合沉积而成。所有块状样品均通过傅里叶变换红外光谱法（FTIR）和 X 射线衍射法（XRD）进行研究，而薄膜则通过电子显微镜进行研究。在 Al2O3-TiO2 样品的红外光谱中，以及凝胶和涂层中，观察到了八面体和四面体配位铝的 AlO 键振动产生的带。Al2O3-TiO2-SiO2 体系的样品的红外光谱与 Al2O3-TiO2 体系的不同之处在于存在归因于 SiO 键振动的带以及归因于 AlO 键振动的带的位置。在所有块状样品和涂层的光谱中，TiO 键振动的位置是基于纯锐钛矿和金红石的红外光谱来归属的。
