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Beryllium Surface Modified by B Ion Implantation

HU Renyuan YANG Yushi Institute of Low Energy Physics , Beijing Normal University , China. Beijing Research Institute of Materials and Technology , China.

材料科学技术（英文）

Beryllium is implanted with 100 keV, 2×10~(17) B/cm~2 and post-implanted sample is annealed at 650℃ for 1 h.Hardness measurement indicates that the hardness increases with implantation and can further be modified by post-implantation heat treatment. Profile measurement shows that implantation causes...

关键词: ion implantation , null , null

Guangzhou Institute of Energy Conversion,The Chinese Academy of Sciences,Guangzhou 510070,China

B.W. Wang , H. Shen

金属学报(英文版)

Ni-Cr System solar selective thin solid films were prepared by d.c. magnetron reactivesputtering under the atmosphere of O2 and N2. Ni-Cr alloy was chosen as targetmaterial and copper sheets as substrate. Using SEM, Spectrophotometer and Talystepto analyze the relations between the selective charact...

关键词: solar selective thin film , null , null , null

Strong magnetoelectric coupling in Tb-Fe/Pb(Zr(0.52)Ti(0.48))O(3) thin-film heterostructure prepared by low energy cluster beam deposition

Applied Physics Letters

The magnetoelectric Tb-Fe/Pb(Zr(0.52)Ti(0.48))O(3) thin-film heterostructure was prepared by low energy cluster beam deposition. The microstructures, ferroelectric property, leakage current, and magnetization, as well as magnetoelectric e...

关键词: composites

LOW ENERGY DISLOCATION STRUCTURES DUE TO FATIGUE SOFTENING

CHAI Huifen WANG Liqin Xi'an Jiaotong Uuiversity , Xi'an , ChinaLAIRD Campell University of Pennsylvania , U.S.A.[Originally published in ACTA METALL SIN(CHINESE EDN)25(3)1989 pp A201—A206 , Associate professor , Xi'an Jiaotong University , Xi'an , China

金属学报(英文版)

The evolution of dislocation structures in 6% prestrained steel 1018 during fatigue has been studied by TEM.The dislocations are quite movable,the loose cells quickly change to “checkboard”structures,in which the main cell walls lie about {100}.Then,the low

关键词: steel 1018 , null , null

Low energy ion channelling in single-wall nanotubes

Chinese Physics Letters

Monte Carlo simulation is used to study the low energy He ion challenging in a (17,0) single-wall nanotube and its rope. The simulation shows that the channelling critical angle Psi(C) = 48E(-1/2) (E is incident en...

关键词: charged-particles;field emission;carbon;diffraction;crystals;atoms

Low Energy Dislocation Structure in Deformed Metals

DIAO Xiaoxue XING Xiusan ** Department of Applied Physics , Beijing Institute of Science and Technology , Beijing , 100081 , China.To whom correspondence should be addressed.

材料科学技术（英文）

In this paper,the dislocation distribution struc- ture in deformed metal is discussed.The flow stress of material for the heterogeneous dislocation distri- bution which tends to the flow stress for the homo- geneous dislocation distribution in the limiting case is derived.The causes and the effects ...

关键词: Dislocation structure , null

Isotopic mass effects for low-energy channeling in a silicon crystal

Radiation Effects and Defects in Solids

Monte Carlo (MC) simulations have been used to study the low-energy channeling of (10)B and (11)B ions along the [100] axis in Si crystal. MC simulations show that the critical angle Psi(C) approximate to 15.3(keV/E)(1/2) (in degrees) for the channeling of isotopic (10...

关键词: mass effect;channeling;silicon crystal;single-wall nanotubes;carbon nanotubes;charged-particles;molecular-dynamics;critical angles;heavy-ions;dependence;atoms;distributions;radiation

Channeling of low energy light and heavy ions in single-wall nanotubes

Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms

The Monte Carlo simulation program has been used to study low energy channeling in the single-wall nanotube and its rope, in comparisons between beam sizes and between light (He) and heavy (Ar) ions. The simulation mainly shows that the c...

关键词: the Monte Carlo simulation;channeling;nanotube;charged-particles;carbon nanotubes;diffraction;crystal;atoms

Ion mass dependence for low energy channeling in single-wall nanotubes

Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms

An Monte Carlo (MC) simulation program has been used to study ion mass dependence for the low energy channeling of natural- and pseudo-Ar ions in single-wall nanotubes. The MC simulations show that the channeling critical angle Psi(C) obe...

关键词: mass regulation;nanotubes;channeling;Monte Carlo simulation;charged-particles;carbon nanotubes;heavy-ions;simulation;crystal;atoms