物理化学学报Issue(4)：821-828,8.DOI:10.3866/PKU.WHXB201301102
烧结型NdFeB永磁体表面有机纳米复合膜的制备及性能
Preparation and Properties of Polymeric Nano Composite Film on Surface of Sintered NdFeB Permanent Magnet
摘要
Abstract
A nanofilm (TES-SAMs) was prepared by self-assembly of 6-(3-triethoxysilylpropylamino)-1,3, 5-triazine-2,4-dithiol monosodium (TES) on a sintered NdFeB surface. A nano composite film (TES-ATP) was then prepared on the TES-SAMs surface by a self-developed polymer plating technique using 6-(N-allyl-1,1,2,2-tetrahydroperfluorodecylamino)-1,3,5-triazine-2,4-dithiol monosodium (ATP). The surface of the TES-SAMs and TES-ATP were characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy, spectroscopic ellipsometry, atomic force microscopy (AFM), and contact angle measurements. A UMT-2 tribometer was used to investigate their micro-tribological properties. The experimental results showed that the thicknesses of TES-SAMs and TES-ATP were 5.08 and 29.78 nm, respectively. The surface free energy of TES-ATP and TES-SAMs decreased from 73.13 mJ·m-2 for the substrate to 10.19 and 63.39 mJ·m-2, respectively. The contact angle of distilled water on TES-ATP was 123.5° , indicating transformation from a hydrophilic surface to a hydrophobic one. The friction coefficient was effectively reduced from 0.71 for the substrate to 0.22 for TES-SAMs and 0.12 for TES-ATP. In addition, the TES-ATP composite film possessed excellent anti-wear ability. Thus, the present TES-ATP composite film provides a novel approach to solving tribological issues in micro-electro-mechaanical system (MEMS).关键词
自组装分子膜/有机镀膜/复合膜/表面自由能/疏水/微摩擦学性能Key words
Self assembled monolayer/Polymer plating/Composite film/Surface free energy/Hydrophobicity/Micro-tribological property分类
化学化工引用本文复制引用
刘秦,康志新,方刚..烧结型NdFeB永磁体表面有机纳米复合膜的制备及性能[J].物理化学学报,2013,(4):821-828,8.基金项目
The project was supported by the National Natural Science Foundation of China (51075151) and Key Program of Natural Science Foundation of Guangdong Province, China (10251064101000001).国家自然科学基金(51075151)和广东省自然科学基金重点项目(10251064101000001)资助 （51075151）
