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Journal of Materials Science & Technology 2010年第11期26卷 967-972页

作者： Zhiyun Han,Hongkai Li,Guoqiang Lin and Chuang Dong Key Laboratory for Material Modification by Laser,ion and electron beams,Dalian University of Technology,Dalian 116085,China Key Laboratory for Material Modification by Laser Ion and Electron Beams Dalian University of Technology Dalian 116085 China

In this paper,Me （Me=Cr,Zr） and N co-doped diamond like carbon （DLC-MeN） composite films were prepared on cemented carbide substrates by pulsed bias arc ion *** effect of nitrogen flow rates on the microstructure and properties of the films were investigated by X-ray photoelectron spectroscopy （XPS）,Raman spectra,grazing incident X-ray diffraction （GIXRD）,high resolution transmission electron microscopy （HRTEM） and ***,GIXRD and HRTEM results show that the deposited films are nanocomposite films with MeN nanocrystalline phase embedded within DLC amorphous matrix,which are vital for the mechanical properties of the *** nitrogen flow rate has significant effect on the compositions and structures and hence on the hardness and elastic modulus of the films,and increasing nitrogen flow rate decreases drastically the hardness and elastic modulus of the films.

关键词： Diamond like carbon films Doping Nitrogen flow rate Arc ion plating

Interfacial structure and mechanical property of Mg/Al alloy joint diffusion bonded with Zn interlayer metal

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Rare Metals 2007年第S1期26卷 296-300页

作者： ZHAO Limin,ZHANG Zhaodong,and HAO Shengzhi State Key Laboratory of Materials Modification by Laser,ion and electron beams,Dalian University of Technology,Dalian 116024,China Dalian Univ Technol State Key Lab Mat Modificat Laser Ion & Electron Dalian 116024 Peoples R China

The characteristics of microstructure and mechanical strength of the Mg/Al alloy joint diffusion bonded with a Zn interlayer were studied by means of metalloscopy,X-ray diffraction(XRD),electron probe microanalysis(EPMA) and mechanical property *** showed that the Mg/Al alloy joint diffusion bonded with Zn interlayer consists of a multilayer sandwich structure,including the transition zone on Al side,Zn and Zn-Mg transition zone,as well as the transition zone on Mg *** transition zone on Al side is very thin and composed mainly of a solid solution structure,while the Zn-Mg transition zone has a relative larger dimension after a rapid eutectic *** addition of zinc interlayer inhibits the inter-diffusion of Mg and Al alloy *** Zn-Mg transition zone constitutes the main part of the joint and consists of Mg crystals and the new phase formed is MgZn intermetallic *** mechanical strength of Mg/Al alloy joints diffusion bonded with Zn interlayer reached 42 *** to the phase constitution analyses executed on each side of the fracture face,it was deduced that the fracture of Mg/Al alloy joint located around the interface of Zn and Zn-Mg transition zone.

关键词： magnesium alloy aluminum alloy zinc interlayer diffusion bonding joint strength

Polarization Spectral Hole-Burning in Organic Materials

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Chinese Journal of Lasers 1995年第2期B4卷 151-159页

作者： YIN Yu ZHAO Youyuan LUO Xiao CHEN Lingbing LI Fuming(Opening Loboratory for Materials Modification by Laser, ion and electron beams,Department of Physics, Fudan University, Shanghai 200433, China) Fudan Univ Shanghai China

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ＰｏｌａｒｉｚａｔｉｏｎＳｐｅｃｔｒａｌＨｏｌｅ－ＢｕｒｎｉｎｇｉｎＯｒｇａｎｉｃＭａｔｅｒｉａｌｓ￥ＹＩＮＹｕ；ＺＨＡＯＹｏｕｙｕａｎ；ＬＵＯＸｉａｏ；ＣＨＥＮＬｉｎｇｂｉｎｇ；ＬＩＦｕｍｉｎｇ（ＯｐｅｎｉｎｇＬｏｂｏｒａｔｏｒｙｆｏｒＭａｔｅｒｉ...

关键词： spectral hole-burning optical storage

Study on Stabilization of a Synchronously Pumped Dye Laser

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Chinese Journal of Lasers 1995年第3期B4卷 223-228页

作者： ZHU Heyuan SUN Diechi HU Yimei LI Fuming(State Key Joint Laboratory for Material Modification by Laser,ion and electron beams, Fudan BranchDept. of Physics, Fudan University, Shanghai 200433, China) Fudan Univ Shanghai China

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ＳｔｕｄｙｏｎＳｔａｂｉｌｉｚａｔｉｏｎｏｆａＳｙｎｃｈｒｏｎｏｕｓｌｙＰｕｍｐｅｄＤｙｅＬａｓｅｒ￥ＺＨＵＨｅｙｕａｎ；ＳＵＮＤｉｅｃｈｉ；ＨＵＹｉｍｅｉ；ＬＩＦｕｍｉｎｇ（ＳｔａｔｅＫｅｙＪｏｉｎｔＬａｂｏｒａｔｏｒｙｆｏｒＭａｔｅｒｉａｌＭｏｄ...

关键词： coherent photon seeding time-bandwidth product frequency hopping

Phase Conjugation by Degenerate Four-wave Mixing in Nematic Liquid Crystals

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Chinese Journal of Lasers 1997年第5期B6卷 403-408页

作者： ZHONG Xiaoxia WU Jiada CHEN Shuchao WU Changzheng LI Fuming (State Key Joint Lab for Materials Modification by Laser, ion and electron beams Department of Physics, Fudan University, Shanghai 200433, ChinaDepartment of Physics Xiamen University, Xiamen 3 Fudan Univ Shanghai China

Phase conjugation by degenerate four-wave mixing(DFWM) due to the optically induced molecular reorientation in nematic liquid crystals(NLC) is studied, and an analytical expression for the efficiency of phase conjugation is presented. Calculations of the efficiency are given for 5CB liquid crystal for further investigstion of the dependences of the phase conjugation on the angle between the pump beam and the probe beam as well as on the angle between the plane of the incident beams and the nematic director n. The physical mechanism is also discussed.

关键词： nematic liquid crystal four-wave mixing phase conjugation

Influence of the low-frequency source parameters on the plasma characteristics in a dual frequency capacitively coupled plasma reactor:Two dimensional simulations

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Progress in Natural Science:Materials International 2009年第6期19卷 677-684页

作者： Xiang Xu, Hao Ge, Shuai Wang, Zhongling Dai, Younian Wang , Aimin Zhu State Key Lab of Materials Modification by electron, ion and Laser beams, School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023, China State Key Lab of Materials Modification by electron Ion and Laser Beams School of Physics and Optoelectronic Technology Dalian University of Technology Dalian 116023 China

A two-dimensional (2D) fluid model is presented to study the discharge of argon in a dual frequency capacitively coupled plasma (CCP) reactor. We are interested in the influence of low-frequency (LF) source parameters such as applied voltage amplitudes and low frequencies on the plasma characteristics. In this paper, the high frequency is set to 60 MHz with voltage 50 V. The simulations were carried out for low frequencies of 1, 2 and 6 MHz with LF voltage 100 V, and for LF voltages of 60, 90 and 120 V with low frequency 2 MHz. The results of 2D distributions of electric field and ion density, the ion flux impinging on the substrate and the ion energy on the powered electrode are shown. As the low frequency increases, two sources become from uncoupling to coupling. When two sources are uncoupling, the increase in LF has little impact on the plasma characteristics, but when two sources are coupling, the increase in LF decreases the uniformities of ion density and ion flux noticeably. It is also found that with the increase in LF voltage, the uniformities in the radial direction of ion density distribution and ion flux at the powered electrode decreases significantly, and the energy of ions bombarding on the powered electrode increases significantly.

关键词： Dual frequency Capacitively coupled plasma Fluid simulation

A Study of AlN Films Prepared by Arc ion Plating

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Journal of Materials Science & Technology 2003年第1期19卷 27-29页

作者： Meidong HUANG, Chunyan LU, Bing WANG, Chao SUN, Rongfang HUANG and Lishi WENInstitute of Metal Research, Chinese Academy of Science, Shenyang 110016, ChinaGuoqiang LIN and Chuang DONGState Key Laboratory for Materials Modification by Laser, ion, and electron beams, Dalian University of Technology, Dalian 116024, China Inst. of Metal Res. Chinese Acad. of Sci. Shenyang 110016 China Lab. for Mat. Modification by Laser Ion. and Electron. Beams Dalian Univ. of Technol. Dalian 116024 China

Hexagonal AIN films have been obtained by arc ion plating at different negative biases. X-ray diffraction and scanningelectron microscopy results show that AIN films with smooth surfaces and (002) preferred orientation are obtainedat low biases, whereas those with coarse surfaces and (100) preferred orientation are obtained at high biases. Theformation mechanism of AIN is analyzed and the experiment results are discussed. The effect of bias on adhesionstrength has also been examined.

关键词： A1N AIP Preferential orientation Bias

Deposition and Properties of CrN_x films by High Power Pulsed Unbalanced Magnetron Sputtering

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稀有金属材料与工程 2011年第S4期40卷 160-163页

作者： Mu Xiaodong,Mu Zongxin,Wang Chun,Jia Li,Zang Hirong,Liu Bingbing,Dong Chuang Key Laboratory of Materials Modification by Laser,ion and electron beams (Dalian University of Technology),Ministry of Education,School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,China Dalian Univ Technol Sch Phys & Optoelect Technol Minist Educ Key Lab Mat Modificat Laser Ion & Electron Beams Dalian 116024 Peoples R China

High-power pulsed magnetron sputtering (HPPMS) technology has drawn extensively attention for producing ultra-high dense plasma and high ionization fractions of the sputtered species,depositing dense films with high *** films were deposited on the substrates of Si(100) using high-power pulsed unbalanced magnetron sputtering (HPPUMS) technology,and the analyses of XRD and atomic force microscope (AFM) were conducted on the properties of microstructure and surface morphology of CrNx films;the friction coefficient and the adhesion between CrNx film and substrate were measured,*** was found HPPUMS discharge is able to deposit CrNx films with super comprehensive properties:higher adhesive strength between the film and substrate and lower coefficient of *** rate of CrNx films,which was tested by interferometry,was about 4.2nm/min at 0.6Pa and the pulse power density up to 6.8kW/cm2 with the pulse repetition frequency of 0.7Hz,which is about 56% of that provided by the mid-frequency magnetron sputtering discharge under the conditions of the same average power ***,clusters with a dimension of several hundred nanometers were observed on the AFM morphology probably related to high pulse current.

关键词： plasma sources plasma-based ion implantation and deposition thin film structure and morphology deposition by sputtering

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低能Pt原子团簇沉积过程的分子动力学模拟

物理学报 2002年第12期51卷 2798-2803页

作者：叶子燕张庆瑜大连理工大学三束材料改性国家重点实验室大连116024

利用分子动力学模拟系统研究了低能Pt38,Pt1 41 和Pt2 6 6 原子团簇与Pt(0 0 1)表面的相互作用过程 ,详细分析了初始原子平均动能为 0 .1,1.0和 10eV的原子团簇的沉积演化过程及其对基体表面形貌的影响 .研究表明 ,初始原子平均动能是... 详细信息

利用分子动力学模拟系统研究了低能Pt38,Pt1 41 和Pt2 6 6 原子团簇与Pt(0 0 1)表面的相互作用过程 ,详细分析了初始原子平均动能为 0 .1,1.0和 10eV的原子团簇的沉积演化过程及其对基体表面形貌的影响 .研究表明 ,初始原子平均动能是描述低能原子团簇的重要参量 .当团簇的平均原子动能较低时 ,团簇对基体表层原子点阵损伤较小 ,基本属于沉积团簇 ;随着入射团簇的原子平均动能的增加 ,团簇对表层原子点阵结构的破坏能力增强 ,当团簇的原子平均动能增加到 10eV时 ,团簇已经显现出注入特征 .低能原子团簇对基体表面形貌的影响主要取决于团簇的初始原子平均动能 ,但随着团簇所含原子数目的增加 ,低能原子团簇对基体表面的影响略有增强 .此外。

关键词：分子动力学模拟低能原子团簇载能沉积薄膜制备 Pt原子团簇铂原子

The Effect of Intensity Pulsed ion Beam Irradiation on Wear Resistance of High-speed Steel

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材料热处理学报 2004年第5B期25卷 1049-1052页

作者： MEIXian-xiu HAOSheng-zhi MATeng-cai WANGYing-min LIUZhen-min StateKeyLaboratoryforMaterialsModificationbyLaser IonandElectronBeamsDepartmentofPhysicsDalianUniversityofTechnologyDalian116024China

The structural and phase transformations occurring in the near-surface layers of pre-quenched W6Mo5Cr4V2 high-speed steel (HSS) subjected to intensity pulsed ion beam (IPIB) melting have been investigated. The effect of IPIB irradiation on wear resistance of the HSS has also been studied. The IPIB consists mainly of Cn+(30%)^0 H+(70%), with a high beam current density of 80A/cm2, acceleration voltage of 250kV, pulse duration of 70 ns. Samples were bombarded with 1, 3, 5 pulses respectively. It has been revealed that after IPIB irradiation the initial martensite in the near-surface layer of HSS changed into austenite and produced residual stresses by using electron microscopy and X-ray diffraction. Redistribution and interlace of dislocations in the irradiated samples were generated under the impact of shock wave. With increasing pulse times gradual liquid-phase dissolution of M6C carbide particles occurs in the near-surface layer and produces nanocrystalline MC. This process results in the decrease of martensite crystal (a-phase) and increase of austenite (y-phase) content and the dispersed carbide. Wear resistance of the HSS is improved by a factor of 2, which is explained by the formation of metastable phases such nanocrystal and residual stresses and the redistribution and interlace of dislocations.

关键词：高速钢磨损性能强脉冲离子束热处理