在Ti-6Al-4V基底上形成的羧酸和膦酸自组装单分子层的物理化学性质比较。
Comparison of the Physicochemical Properties of Carboxylic and Phosphonic Acid Self-Assembled Monolayers Created on a Ti-6Al-4V Substrate.
作者信息
Cichomski Michal, Prowizor Milena, Kowalczyk Dorota Anna, Sikora Andrzej, Batory Damian, Dudek Mariusz
机构信息
Department of Materials Technology and Chemistry, University of Lodz, Faculty of Chemistry, Pomorska 163, 90-236 Lodz, Poland.
Department of Solid State Physics, Faculty of Physics and Applied Informatics, University of Lodz, Pomorska 149/153, 90-236 Lodz, Poland.
出版信息
Materials (Basel). 2020 Nov 14;13(22):5137. doi: 10.3390/ma13225137.
This study compared the tribological properties in nano- and millinewton load ranges of Ti‑6Al-4V surfaces that were modified using self-assembled monolayers (SAMs) of carboxylic and phosphonic acids. The effectiveness of the creation of SAMs with the use of the liquid phase deposition (LPD) technique was monitored by the contact angle measurement, the surface free energy (SFE) calculation, X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FTIR) measurements. The obtained results indicated that more stable and well-ordered layers, which were characterized by the lowest values of the coefficient of friction, adhesion, and wear rate, were obtained using phosphonic acid as a surface modifier. Based on the obtained results, it was found that the Ti-6Al-4V alloy modified by phosphonic acid would be the most advantageous for practical applications, especially in micro- and nanoelectromechanical systems (MEMS/NEMS).
本研究比较了使用羧酸和膦酸的自组装单分子层（SAMs）改性的Ti-6Al-4V表面在纳牛顿和毫牛顿载荷范围内的摩擦学性能。通过接触角测量、表面自由能（SFE）计算、X射线光电子能谱（XPS）和傅里叶变换红外光谱（FTIR）测量来监测使用液相沉积（LPD）技术创建SAMs的有效性。所得结果表明，使用膦酸作为表面改性剂可获得更稳定且排列有序的层，其特征在于摩擦系数、粘附力和磨损率的最低值。基于所得结果发现，经膦酸改性的Ti-6Al-4V合金对于实际应用将是最有利的，特别是在微机电系统和纳机电系统（MEMS/NEMS）中。
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