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纳米摩擦学研究进展与存在问题 被引量:7
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作者 雒建斌 温诗铸 +1 位作者 lawrencek.y.li PatrickL.Wong 《科学通报》 EI CAS CSCD 北大核心 1997年第13期1345-1355,共11页
90年代国际上兴起的纳米科学技术被认为是面向21世纪的新科技,它是在0.1~100nm尺度上研究自然界现象中原子、分子行为与规律,以期在深化对客观世界认识的基础上,实现直接由人类按需要排布原子,制造出性能独特的产品.纳米科技的出现无... 90年代国际上兴起的纳米科学技术被认为是面向21世纪的新科技,它是在0.1~100nm尺度上研究自然界现象中原子、分子行为与规律,以期在深化对客观世界认识的基础上,实现直接由人类按需要排布原子,制造出性能独特的产品.纳米科技的出现无疑是现代科学的重大突破,将深刻影响国民经济的未来发展,并由此派生出一系列的新学科。纳米摩擦学就是其中重要的分支。在纳米科技中,当前人们普遍关心和急需解决的理论与实践问题主要有:微材料特性、微观摩擦、磨损和润滑、微系统优化设计理论以及纳米级结构和制造工艺等。 现代机械科学的发展出现机电一体化、超精密化和微型化的趋势,许多高新技术装置如微电子设备、微型机器人、生物医疗器械和精密测试仪器等的摩擦副间隙常处于纳米量级。微型机械中因受到尺寸效应的影响,使表面粘着力、摩擦力和润滑膜粘滞力相对于传统机械中的体积力而言显得非常突出,微摩擦磨损和纳米薄膜润滑已成为关键问题,因此纳米摩擦学对现代机械的发展具有重要意义。 展开更多
关键词 纳米摩擦学 薄膜润滑 摩擦 磨损 润滑
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Progresses and problems in nano-tribology 被引量:5
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作者 lawrencek.y.li PatrickL.Wong 《Chinese Science Bulletin》 SCIE EI CAS 1998年第5期369-378,共10页
The recent development in the four areas of nano-tribology is analysed. They are micro- and nano-friction and wear, micro- and nano-tribological engineering. The research methods in nano-tribology and thin film lubric... The recent development in the four areas of nano-tribology is analysed. They are micro- and nano-friction and wear, micro- and nano-tribological engineering. The research methods in nano-tribology and thin film lubrication in which five branches are included: equivalent viscusity and flowing characteristics of micro fluid, the transition between ordered molecular film and disordered one, the essence of matrix influence on thin film lubrication, the lubrication mechanism of high polymer lubricants and the problem of superlubricity. Meanwhile, more than 35 problems are proposed which should be solved in the future. 展开更多
关键词 micro-nanotribology THIN film LUBRICATION NANO-TRIBOLOGY measuring technique at NANOMETER scale.
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Microstructure and mechanical properties of Fe-N/TiN magnetic multilayers with different thickness of TiN layers
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作者 lawrencek.y.li 《Science China Mathematics》 SCIE 2001年第S1期375-380,共6页
Fe-N/TiN multilayers (MLs) with different thickness of TiN layers and 20nm thickness ofFe-N layers deposited by DC magnetron sputtering technique were studied. The structure andcomposition of MLs were characterized wi... Fe-N/TiN multilayers (MLs) with different thickness of TiN layers and 20nm thickness ofFe-N layers deposited by DC magnetron sputtering technique were studied. The structure andcomposition of MLs were characterized with low-angle X-ray diffraction (LXRD), Augur depth pro-file and X-ray diffraction (XRD). The hardness and reduced elastic modulus of these multilayerswere studied using a nano-hardness tester (NHT). The bonding strength between the MLs and thesubstrate was measured using a nano-scratch tester (NST). Effects of the thickness of the TiNlayer on critical load, hardness and reduced elastic modulus of the MLs were studied. 展开更多
关键词 Fe-N/TiN MULTILAYER critical load HARDNESS
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