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Journal of Iron and Steel Research International 2019年第5期26卷 512-518页

作者： Tong-bang An Jin-shan Wei Lin Zhao Ji-guo Shan Zhi-ling Tian Central Iron & Steel Research Institute Beijing 100081 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China

The effects of carbon content (0.078-0.100 wt.%) on the microstructure and properties of 1000 MPa grade deposited metal produced by gas metal arc welding have been investigated. Experimental results show that the microstructure of the deposited metal was mainly composed of martensite, bainite and retained austenite. With increasing carbon content, the proportion of martensite increased, and the amount of bainite was reduced. High carbon content is beneficial to strength, but harmful to impact toughness, and thus, carbon reductions lead to the increase in impact toughness. When the carbon content was 0.100 wt.%, the lowest Charpy absorbed energy of 47 J at — 40℃ for the deposited metal was achieved, the highest yield strength of 1038 MPa was attained, and the yield-to-tensile ratio was more than 0.88, while the highest Charpy absorbed energy of 55.7 J at — 40℃ and the lowest yield strength of 915 MPa were obtained when the deposited metal contains 0.078 wt.% C, and the yield-to-tensile ratio was less than 0.85. It is concluded that bainite fraction and fine effective grain size were the dominant factors to achieve good comprehensive mechanical properties (the required strength and an acceptable toughness) of deposited metals with various carbon contents.

关键词： 1000 MPa grade deposited metal Carbon content Microstructure Strength Gas metal arc welding Impact toughness

Surface discharge imaging in presence of deposited space charges in non-uniform DC electric field

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High Voltage 2021年第4期6卷 576-589页

作者： Marek Florkowski Dariusz Krześniak Maciej Kuniewski PawełZydroń Department of Electrical and Power Engineering AGH University of Science and TechnologyKrakowPoland ABB Corporate Technology Center KrakowPoland

An investigation is made of the influence of an accumulated charge sprinkled on the surface of an epoxy resin plate in corona mode on partial discharge inception and its forms as analyzed by optical imaging at DC *** effects of the polarities of both the deposited hetero-and homocharges were *** occurrence of first streamer discharges was detected electrically and observed by optical *** various forms of streamers were acquired by optical imaging and associated with the polarity and intensity of the accumulated surface *** charge sprinkling on the epoxy specimen surface was quantitatively evaluated by surface charge *** addition,the effect of the subsequent discharges occurring in a heterocharge configu-ration above the inception voltage was *** terms of their directions and lengths,the kinetics of the streamer filaments revealed a strong dependence on both the polarity and the intensity of an accumulated *** with the reference charge-free surface,the strongest drop in dielectric strength in the interelectrode space with a sprinkled charge was obtained for the heterocharge *** presented results provide a contribution to the assessment of streamer behaviour in the presence of accumulated surface charges,including its polarity and intensity.

关键词： deposited Surface charges

Structural and plasma characterization of the power effect on the chromium thin film deposited by DC magnetron sputtering

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Optoelectronics Letters 2020年第5期16卷 369-372页

作者： S.Alsheikh Salo B.Abdallah M.Akel M.Kakhia S.Alsheikh Salo B.AbdallahM.AkelM.Kakhia Department of PhysicsAtomic Energy CommissionDamascus P.O.Box 6091Syria1

The chromium(Cr)films on silicon Si(100)substrate are prepared using DC magnetron sputtering technique at an argon gas pressure of 3 Torr for different applied powers(40—140 W).The chemical composition,the thicknesses and the structural characterization of the deposited Cr films are studied and analyzed using energy dispersive X-ray spectroscopy(EDX),scanning electron microscopy(SEM),and X-ray diffraction(XRD),***,the generated plasma parameters,including floating potential,plasma potential,electron density,ion density and electron temperature,have been measured,and the automated Langmuir probe is used for the Cr films *** ion and metal fluxes are also *** results show that the Cr film thickness enhances with the higher applied *** Cr deposited films properties are characterized and correlated with the measured plasma parameters.

关键词： deposited chromium film

Effect of substrate bias on the properties of plasma deposited organosilicone(pp-HMDSN)thin films

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Optoelectronics Letters 2023年第5期19卷 274-278页

作者： S.Saloum S.A.Shaker R.Hussin M.N.Alkafri A.Obaid M.Alsabagh Physics Department Atomic Energy CommissionP.O.Box 6091DamascusSyria

Organosilicone thin films have been deposited by plasma polymerization(pp)in a plasma enhanced chemical vapor deposition(PECVD)system using hexamethyldisilazane(HMDSN:C_(6)H_(19)Si_(2)N)as a monomer precursor,at different biases of the stainless-steel substrate *** substrate bias affected film thickness,surface morphology,chemical composition and photoluminescence(PL)*** a negatively biased substrate,it is found that the film thickness is the minimum,while the porosity and PL emission are the *** a positively biased substrate,the thickness and the ratio of Si/N are the maximum which correspond to a blue shift of the PL emission in comparison with the case of non-biased grounded *** addition,the characterization of the plasma using a single cylindrical Langmuir probe has been performed to obtain information about both the electron density and the positive ion energy,where it can be concluded that the ion energy plays a major role in determining film thickness.

关键词： deposited N steel

Genesis,Distribution and Engineering Characteristics of Recently deposited Silts in Huaibei Plain,Anhui Province

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地学前缘 2009年第S1期16卷 243-244页

作者： Daoxiang Wu,Zhihai Wu,Guojun Shi,Guoqiang Wang 1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China. 2.School of Resources & Environmental Engineering,Hefei University of Technology,Hefei 230009,China

There are two different genetic types of recently deposited silts widely distributing in Huaibei Plain of Anhui Province:flooding deposited silt of Yellow River and Huaihe *** recently deposited silts have the followi... 详细信息

关键词： recently deposited silt engineering geological characteristics bearing capacity Huaibei Plain

Structural and Electrical Behaviors of Ag Films deposited on Liquid Substrates

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电子显微学报 1997年第4期 181-182页

作者： G.X.Ye 1,2 \ Q.R.Zhang 2\ H.L.Ge 2\ C.M.Feng 2 (1\ Dept. of Phys., Hangzhou University, Hangzhou 310028) (2\ Dept. of Phys., Zhejiang University, Hangzhou 310027)

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关键词： Ag Films deposited Behaviors

Microscopic seepage mechanism during in-situ leaching of weathered crust elution-deposited rare earth ores

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China Rare Earth Information 2020年第3期26卷 15-15页

In order to reveal the microscopic seepage mechanism during in-situ leaching of weathered crust elution-deposited rare earth ores,microscopic pore structure characteristics(pore scale,pore distribution and pore form)of the upper,middle and bottom samples in four different kinds of the rare earth ores after leaching were quantitatively analyzed using both scanning electron microscopy and image processing *** between the microscopic structure characteristics and the permeability coefficient was discussed as well.

关键词： deposited rare earth

4-28 Calorimetric Measurement of deposited Energy by Heavy Ion Beams Impact on Diamond Target

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IMP & HIRFL Annual Report 2014年第1期 205-205页

作者： Cheng Rui Wang Yuyu Zhao Yongtao Zhou Xianming Peng Haibo Lei Yu Liu Shidong Deng Jiachuan Xiao Jiahao Ma Lidong 不详

Highly charged ions (HCIs) carrying amount of potential energy will produce some new physical phenomenabecause the potential energy will be deposited into a very small volume within a very short time. We wouldapply the calorimetric method to study the energy deposition of HCIs [1;2]. Herein we introduce the new setup forcalorimetric measurement for the potential energy deposition of highly charged ions at 320 kV Highly Charged IonsPhysics Experimental *** setup was constructed by 3 parts: the Dewar, the electrical temperature controller and the main part. Thediamond target was connected to the LN2 cooled heat sink by 4 copper wires and a Platinum temperature sensorwas glued to the rear side of the target. As shown in Fig. 1.

关键词： Calorimetric Measurement deposited

Mass Deposition,Etching and Sputtering Effects of Low-Energy N^+Ion Irradiation on Solid Fly Ash

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Plasma Science and Technology 2013年第12期15卷 1232-1236页

作者：苗春光王相勤 Key Laboratory of Ion Beam Bioengineering Hefei Institutes of Physical ScienceChinese Academy of Sciences

Fly ash is an industrial waste created when coal is burned to generate electrical power. In the present study, we used low-energy nitrogen ion implantation on fly ash to improve its surface properties. Scanning electron microscope （SEM）, fourier transform infrared spectroscopy （FTIR）, X-ray photoelectron spectroscopy （XPS） and inductively coupled plasma-atomic emission spectroscopy （ICP-AES） were used to study the changes of physical and chemical properties of fly ash after N＋ ion implantation, and the mechanism of fly ash modified by ion implantation. In the optimal implantation with energy of 5 keV and dose Of 15D0, the ion beam could effectively increase the specific surface area （approximately 150% increase） of the fly ash. Lots of scratches were generated in the surface of the fly ash after N＋ ion implantation, therefore it is good for enhancing the specific surface area. Experimental results show that the ion implantation could open the chemical bonds of Si-O, Si-A1 and Al-O, and deposit nitrogen ions on the surface of fly ash.

关键词： fly ash nitrogen ion deposited etching sputtering

Molecular deposition film of porphyrin and phthalocyanine bearing oppositely charged substituents

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Science China Chemistry 1998年第5期41卷 449-454页

作者：毛海舫孙轶鹏李洪武周庆复张希沈家聪许慧君 1. Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 200032 Shanghai China 2. Supermolecule Chemistry Key Laboratory of Jilin University 130023 Changchun China 3. Institute of Photographic Chemistry Chinese Academy of Sciences 100101 Beijing China

Several kinds of porphyrin/porphyrin, phthalocyanine/phthdocyanine, porphyrin/phthalocyanine selfassembled multilayer films—molecular deposition (MD) films have been prepared by alternately dipcoating a substrate into solution of oppositely charged chromophores. Alternate film growth was monitored by UV-Vis spectroscopy. The results strongly suggest the formation character of layer-by-layer assembly of homogeneous films. The structum of the MD films have been characterized by quartz crystal microbalance (QCM) and polarized UV-Vis spectroscopy. It is shown that the macroring of the porphyrin and/or phthalocyanine in the MD films is orientated with an angle of 38° and 32° with respect to the normal of the substrate respectively.

关键词： self_assembled film molecular deposited film prophyrin phthalocyanine.