In this paper,we firstly review the carbon layered surface prepared with electron cyclotron resonance (ECR) plasma sputtering. Secondly,the friction behavior of carbon layered surface under pin-on-disk testing is desc...In this paper,we firstly review the carbon layered surface prepared with electron cyclotron resonance (ECR) plasma sputtering. Secondly,the friction behavior of carbon layered surface under pin-on-disk testing is described. Furthermore,the contact stress evolution processes of layered surface with and without transfer layer during wear are given for understanding the contact mechanisms. Finally,a three-dimension (3D) local yield map of layered surface is introduced,which is useful to predict the possible contact mechanisms.展开更多
纳米科技的快速发展迫切需要对材料小尺度下的力学性能进行定量化测试与表征.将声学和原子力显微镜相结合的扫描探针声学显微技术(Atomic Force Acoustic Microscopy,AFAM)是近年来发展的一项定量化纳米力学测试方法,具有高分辨和无损...纳米科技的快速发展迫切需要对材料小尺度下的力学性能进行定量化测试与表征.将声学和原子力显微镜相结合的扫描探针声学显微技术(Atomic Force Acoustic Microscopy,AFAM)是近年来发展的一项定量化纳米力学测试方法,具有高分辨和无损的优势.论文围绕AFAM这一测试技术,首先详细论述了AFAM弹性力学性能和粘弹性力学性能定量化测试的基本原理以及两种成像模式;随后对AFAM方法研究相关的进展进行了分析和归纳;接着对AFAM在纤维增强复合材料、智能材料、生物材料、纳米材料和薄膜中的应用进展进行了综述;最后对AFAM进行了总结和展望.展开更多
Assisted by the bead pull technique,nonresonant perturbation theory is applied for measuring and tuning the field of the linac accelerating structure.The method is capable of making non-touching amplitude and phase me...Assisted by the bead pull technique,nonresonant perturbation theory is applied for measuring and tuning the field of the linac accelerating structure.The method is capable of making non-touching amplitude and phase measurements,real time mismatch feedback and field tuning.Some key considerations of the measurement system and of a C-band traveling-wave structure are discussed,and the bead pull measurement and the tuning of the C-band traveling-wave linac accelerating structure are presented at last.展开更多
基金National Natural Science Foundation of China(No.90923027No.51175405)
文摘In this paper,we firstly review the carbon layered surface prepared with electron cyclotron resonance (ECR) plasma sputtering. Secondly,the friction behavior of carbon layered surface under pin-on-disk testing is described. Furthermore,the contact stress evolution processes of layered surface with and without transfer layer during wear are given for understanding the contact mechanisms. Finally,a three-dimension (3D) local yield map of layered surface is introduced,which is useful to predict the possible contact mechanisms.
文摘纳米科技的快速发展迫切需要对材料小尺度下的力学性能进行定量化测试与表征.将声学和原子力显微镜相结合的扫描探针声学显微技术(Atomic Force Acoustic Microscopy,AFAM)是近年来发展的一项定量化纳米力学测试方法,具有高分辨和无损的优势.论文围绕AFAM这一测试技术,首先详细论述了AFAM弹性力学性能和粘弹性力学性能定量化测试的基本原理以及两种成像模式;随后对AFAM方法研究相关的进展进行了分析和归纳;接着对AFAM在纤维增强复合材料、智能材料、生物材料、纳米材料和薄膜中的应用进展进行了综述;最后对AFAM进行了总结和展望.
基金supported by Program of Shanghai Subject Chief Scientist and Natural Science Foundation of China (key program) (Grant No. 08XD1405400)
文摘Assisted by the bead pull technique,nonresonant perturbation theory is applied for measuring and tuning the field of the linac accelerating structure.The method is capable of making non-touching amplitude and phase measurements,real time mismatch feedback and field tuning.Some key considerations of the measurement system and of a C-band traveling-wave structure are discussed,and the bead pull measurement and the tuning of the C-band traveling-wave linac accelerating structure are presented at last.
