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Micellar sensitized catalytic kinetic spectrophotometry for highly accurate and reproducible determination of V(Ⅳ) and V(Ⅴ)

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Resistance projection welding for TO-Can style package

The effects of the process parameters on the joint quality of TO-Can using resistance projection welding were investigated. A capacitor discharge stored energy welding machine was used for joining caps and headers both coated with nickel SPCC steel. The electrode mater...

关键词: Projection welding

Preserving the half-metallicity at the surfaces of rocksalt CaN and SrN and the interfaces of CaN/InN and SrN/GaP: a density functional study

Journal of Physics-Condensed Matter

Recent theoretical studies indicate that metastable rocksalt CaN, SrN, and BaN exhibit half-metallic ferromagnetism (Volnianska and Boguslawski 2007 Phys. Rev. B 75 224418; Gao et al 2008 Phys. Lett. A 372 1512), and further experiments confirm the existence of self-as...

关键词: molecular-beam epitaxy;room-temperature;ferromagnetism;1st-principles

What types of grain boundaries can be passed through by persistent slip bands?

Journal of Materials Research

Three typical interactions of persistent slip bands (PSBs) with different types of grain boundaries (GBs) were investigated and analyzed in fatigued copper crystals. The results show that PSBs cannot transfer through all types of large-angle GBs, regardless of their orientation with respect to the s...

关键词: cyclic deformation-behavior;fatigued copper polycrystals;dislocation-structures;single-crystals;bicrystals;metals;zones

BEHAVIOR OF FLOW STRESS OF ALUMINUM SHEETS USED FOR PRESSURE CAN DURING COMPRESSION AT ELEVATED TEMPERATURE

G.S. Fu , W.Z. Chen , K.W. Qian

金属学报(英文版)

The behavior of flow stress of Al sheets used for pressure can prepared by different melt-treatment during plastic deformation at elevated temperature was studied by isothermal compression test using Gleeble1500 dynamic hot-simulation testing machine. The results show ...

关键词: Al sheets used for can , null , null

INVESTIGATION OF MULTI-STEP THERMO-MECHANICAL TREATMENT OF CAN-FORGED TiAl-BASED ALLOY

Y.H. He , B. Y. Huang , Y. Liu and Y.X. Liu (Powder Metallurgy Research Institute , Central South University of Technology , Changsha 410083 , China)

金属学报(英文版)

The effects of a new technology, multi-step thermo-mechanical treatment, on the microstructure, deformation substructure and mechanical properties at ambient and elevated tempemture of can-forged Ti-33 Al-3 Cr-0.5Mo (wt%) Alloy were investigated.The results show that, ...

关键词: TiAl-based alloy , null , null

基于CAN现场总线的纤维缠绕控制系统设计

田会方 , 黄亚辉 , 罗宇

玻璃钢/复合材料 doi:10.3969/j.issn.1003-0999.2004.06.009

为了提高数字纤维缠绕控制系统的实时性和可靠性,本文设计了一种基于CAN现场总线的纤维缠绕控制系统.它实现了对张力、含胶量、温度和压力的网络化控制.

关键词: 纤维缠绕 , CAN总线 , 控制模块 , 缠绕设备

CAN引发淀粉与MMA接枝共聚反应的研究

朱林晖 , 丁马太

功能材料

在研究玉米淀粉(corn starch,CS)与甲基丙烯酸甲酯(MMA)接枝共聚反应时发现,硝酸浓度为0.1mol/L、硝酸铈铵(CAN)/CS质量比为1/6、MMA/CS质量比为3/2是兼顾单体转化率(C)、接枝率(G)和接枝效率(GE...

关键词: 淀粉 , 接枝共聚 , 硝酸铈铵 , 均聚物

How long can single-walled carbon nanotube ropes last under static or dynamic fatigue?

Applied Physics Letters

We report a study on the static and dynamic fatigue behavior of unidirectional, aligned single-walled carbon nanotube (SWCNT) ropes. By bench marking against the behavior of graphite fiber, it is found that the static fatigue strength of SWCNT ropes is at least twice that of graphite fiber within 10...

关键词: behavior;epoxy

57Fe,119Sn掺杂Bi2Sr2Can-1CunO2n+4的化学键性质和Missbauer谱位移研究

高发明 , 张思远

低温物理学报 doi:10.3969/j.issn.1000-3258.2001.02.010

利用电介质的平均能带模型计算了Bi2Sr2Can-1CunO2n+4 (n=1,2,3)的化学键参数.应用由共价性和极化率定义的化学环境因子计算了57Fe和119Sn在Bi2Sr2Can

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