Lei Miao
,
Sakae Tanemura
,
Thi Hue Nguyen
,
Li Luo
,
Masaki Tanemura
,
Shoichi Toh
,
Kenji Kaneko
,
Masahiro Kawasaki
材料科学技术（英）
An alternative sol-gel method has been applied to fabricate anatase and rutile TiO2 coatings uniformly on Al scale fibers with very thin naturally oxidized layer from mixed precursors of Ti tetraisopropoxide, acetyl acetone, deionizer water and ethanol in different molar ratios. The crystal structure of TiO2 coatings on Al scale fiber was confirmed by both XRD and TEM. The surface morphology of the coatings was observed by SEM and the chemical composition of the grown TiO2 was analyzed by EDS in TEM. Anatase coating, having a fine crystalline structure, was grown at 450℃ while rutile was being done at 670℃. The TEM results indicated that the fabricated TiO2 coatings consisted of anatase/rutile polycrystalline structures. The optimal fabrication conditions for TiO2 coatings with about 400 nm in thickness on Al scale fibers were established through the characterization results.
关键词:
Sol-gel method
,
null
,
null
,
null
,
null
WANG Yu
,
SONG Weixi
,
HAN Qiyong University of Science and Technology Beijing
,
Beijing
,
China The Institute of Precise and Special New Materials
,
University of Science and Technology Beijing
,
Beijing 100083
,
China
金属学报(英文版)
Size distribution and precipitation of VC particles in ferritic nodular cast iron have been examined by techniques of ultrasonic screening,small angle X-ray scattering and chemical dissolution.The VC particles are sized over a wide range.The superfine ones, dispersed in the ferritic matrix,are the majority.A saturated dispersion with ultrafine VC particles may be approached as the V content increasing in the iron.Thi5 seems to play an important role in the precipitation strengthening for ferritic nodular cast iron.
关键词:
nodular cast iron
,
null
,
null
,
null
陈超
,
宋小全
量子电子学报
doi:10.3969/j.issn.1007-5461.2013.01.021
介绍了基于LabVIEW编程语言开发的米散射大气激光雷达数据采集与可视化软件.设计中利用LabVIEW调用光子计数卡(MSA300)的动态链接库,实现了激光雷达软件对大气回波数据的实时采集与显示,根据Fernald方法即时处理回波信号并显示消光系数与回波强度时间高度显示图(THI).软件采集的数据直接转换并保存为ASCII码文本格式,便于数据的后期处理与分析.初步实验效果表明,软件能够对大气回波信号、消光系数与THI图进行实时可视化显示,便于直观了解大气激光雷达连续探测的大气气溶胶和云时空变化信息.实验表明,软件具有良好的实时性与准确性.
关键词:
大气激光雷达
,
LabVIEW
,
动态链接库
,
数据采集
,
软件设计
张志勇
,
毛建东
,
孙颖
连铸
doi:10.3969/j.issn.1007-5461.2016.05.013
为实现对大气气溶胶时空变化信息的全天时实时监测,设计了一种B/S架构的Mie散射大气激光雷达数据采集及远程监控系统.利用ARM-Linux平台搭建的嵌入式系统实现了对大气回波信号的实时采集.用Fernald方法即时处理回波信号,实时显示消光系数曲线与时间高度回波强度显示图(THI).提出的设计基于B/S架构的远程监控系统,具有监控平台无关和监控地点无关等特性,可以更加直观地了解Mie散射大气激光雷达全天时连续探测得到的大气气溶胶时空变化信息.实验表明所设计系统能实时显示消光系数曲线与THI图,具有良好的远程控制能力.
关键词:
遥感
,
气溶胶
,
Mie散射激光雷达
,
ARM-Linux嵌入式系统
Jianqiang WANG
,
Meiguang ZENG (M.K.Tseng) and Xiufang CHEN(Dept. of Material Science
,
College of Science
,
Northeastern University
,
Shenyang 110006
,
China)Lin DONG and Shixu GU(Liaoning Province Center of Analysis and Testing Research
,
Shenyang 110015
,
Chi
材料科学技术（英）
A new amorphous Al87.3Fe4.3V0.7Si1.7Mm6.0(Mm: misch metal) was prepared by using melt-spinning technique. Differential scanning calorimetry (DSC), X-ray diffraction (XRD). transmis-sion electron microscopy (TEM) and energy dispersive X-ray (EDX) have been used to investigatethe crystallization behaviour of thi5 amorphous alloy It is found that the crystallization processcan be concluded as follows: amorphous→ amorphous plus fcc-Al→ fcc-Al plus AI11(La,Ce)3plus i-phase (icosahedral)→ fcc-Al plus Al11(La,Ce)3 plus i-phase plus ic-phase (icosahedralcompounds). The results of microhardness measurement show that HV values are higher thanthose in Al-Fe-V-Si based alloy and the maximum HV value corresponds to the coexisting ofnanoscale Al particles and i-phase.
关键词:
