中国科学院机构知识库网格系统: 检索

Spatial and temporal variability of turbulent mixing in the near-field of the Changjiang River CNKI期刊论文 OAI收割
2020
作者: WANG Jianfeng; YU Fei; REN Qiang; WEI Chuanjie

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收藏 | 浏览/下载：2/0 | 提交时间：2024/12/18

Changjiang River near-field plume turbulent mixing observation microstructure

Thermal activation based constitutive model for high-temperature dynamic deformation of AZ31B magnesium alloy 期刊论文 OAI收割
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 卷号: 743, 页码: 24-31
作者: Xie, Qijun; Zhu, Zhiwu; Kang, Guozheng

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收藏 | 浏览/下载：53/0 | 提交时间：2019/03/12

Magnesium alloys Dynamic constitutive model High strain rate Elevated temperature Microstructure observation

The effect of local thermo-solutal convection on dendrite fragments at variable cross section 期刊论文 OAI收割
MATERIALS RESEARCH EXPRESS, 2019, 卷号: 6, 期号: 11, 页码: -
作者: Li, FG; Yin, FC; Zhang, J; Fu, YN; Sun, BD

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收藏 | 浏览/下载：39/0 | 提交时间：2020/10/16

SYNCHROTRON X-RAY TO-EQUIAXED TRANSITION STRAY CRYSTAL-FORMATION IN-SITU OBSERVATION FRECKLE FORMATION DIRECTIONAL SOLIDIFICATION MICROSTRUCTURE EVOLUTION WITHDRAWAL RATE SN-BI COLUMNAR

Microstructure observations in the upper layer of the South China Sea 期刊论文 OAI收割
JOURNAL OF OCEANOGRAPHY, 2016, 卷号: 72, 期号: 5, 页码: 777-786
作者: Sun, Hui; Wang, Qingye

收藏 | 浏览/下载：33/0 | 提交时间：2016/11/22

South China Sea Microstructure observation Turbulent mixing Three-dimensional distributions Mixing efficiency

Real-time Observation on Coarsening of Second-Phase Droplets in Al-Bi Immiscible Alloy Using Synchrotron Radiation X-ray Imaging Technology 期刊论文 OAI收割
ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2015, 卷号: 28, 期号: 7, 页码: 940—945
作者: Kang, HJ; Zhou, P; Cao, F; Zhu, J; Fu, YN

收藏 | 浏览/下载：22/0 | 提交时间：2016/03/04

IN-SITU OBSERVATION DIRECTIONAL SOLIDIFICATION MICROSTRUCTURE EVOLUTION PB ALLOYS SN-BI MICROGRAVITY GROWTH COLLISION POWDERS MOTION

Direct observation of the segregation driven by bubble evolution and liquid phase separation in Al-10 wt.% Bi immiscible alloy 期刊论文 OAI收割
SCRIPTA MATERIALIA, 2015, 卷号: 102, 页码: 19—22
作者: Lu, WQ; Zhang, SG; Zhang, W; Kaptay, G; Yu, JD

收藏 | 浏览/下载：20/0 | 提交时间：2015/12/09

ALUMINUM-COPPER ALLOYS IN-SITU OBSERVATION HYDROGEN POROSITY GROWTH-MODELS MICROSTRUCTURE SOLIDIFICATION SIMULATION MORPHOLOGY PORES

In situ observations on creep fatigue fracture behavior of Sn-4Ag/Cu solder joints 期刊论文 OAI收割
Acta Materialia, 2011, 卷号: 59, 期号: 15, 页码: 6017-6028
Q. K. Zhang; Z. F. Zhang

收藏 | 浏览/下载：33/0 | 提交时间：2012/04/13

SnAg/Cu solder joints Creep fatigue In situ observation Strain localization Grain subdivision lead-free solders pb-sn solder tensile properties shear-strength deformation-behavior sn-3.5ag solder strain-rate ag microstructure alloys

In situ observations on shear and creep-fatigue fracture behaviors of SnBi/Cu solder joints 期刊论文 OAI收割
Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2011, 卷号: 528, 期号: 6, 页码: 2686-2693
Q. K. Zhang; Z. F. Zhang

收藏 | 浏览/下载：12/0 | 提交时间：2012/04/13

In situ observation Shear Creep-fatigue Fracture Sn-58Bi solder Grain-boundary sliding lead-free solders sn-bi microstructure evolution tensile properties alloys deformation technology metals ag

The synthesis and field emission property of carbon nanotubes on carbon fibers substrate (EI CONFERENCE) 会议论文 OAI收割
Technical Digest of the 20th International Vacuum Nanoelectronics Conference, IVNC 07, July 8, 2008 - July 12, 2008, Chicago, IL, United states
Leyong Z.; Weibiao W.; Jingqiu L.; Yuxue X.; Da L.; Song C.; Haifeng Z.

收藏 | 浏览/下载：32/0 | 提交时间：2013/03/25

Using ferrocene as catalyst precursor C2H2 as carbon source carbon nanotubes (CNTs) with uniform density were synthesized on carbon fibers substrate by floating catalyst method. The morphology and microstructure were characterized by field emission scanning electron microscope (FESEM) and high-resolution transmission electron microscopy (HRTEM). The observation showed that the length of CNTs is about 2 m the average space between adjacent CNTs is about 300 nm and the diameter of CNT is about 45 nm. The less dense "short and stubby" aligned CNTs films should have good electron field emission characteristics. The results of field emission showed that the emission current of CNTs/carbon fibers was 5 A at the field of 2.5 V/m and the emission current can be 280 A with a field of 7 V/m (the specimen area is 0.25 cm2 and the distance between cathode and anode is 200 m). The calculation based on the F-N plot indicated that the field enhancement factor of CNTs tip is 499122. Using the conductivity and chemical stability of carbon fibers and the uniform and sparse density distribution of CNTs on carbon fibers substrate the tip predominance of carbon nanotubes can be exerted and simultaneously the effect of screening effects between adjacent carbon nanotubes on the field emission performance can also be effectively decreased. The CNTs synthesized on carbon fibers substrate has many predominances for the fabrication of cold cathode devices. For example using the removability of carbon fibers the cathode of CNTs/carbon fibers can be arbitrarily moved enlaced or combined to form different patterns and the cathode of CNTs/carbon fibers can be also fabricated in large size. Therefore CNTs/carbon fibers may have potential application in field emission displays.

Microstructure and microhardness in surface-nanocrystalline Al-alloy material 图书章节 OAI收割
2007
作者: Wei YG(魏悦广); Wu XL(武晓雷); Zhu C; Zhao MH

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收藏 | 浏览/下载：22/0 | 提交时间：2020/11/19

Microstructure Nanoindentation test Size effect Surface-nanocrystalline Al-alloy TEM observation