检索结果-南通市图书馆

New Solution to Surface Temperature of Casting Slab Measurement Based on Preceded Reflector and Multi-Wavelength

Journal of Iron and Steel Research International 2012年第8期19卷 12-16页

作者： LIU Jun1, MA Jiao-cheng2, YANG Feng3, XIAO Hui1, RAO Li-min1 (1. school of Nuclear Engineering and technology, East china Institute of technology, Fuzhou 344000, Jiangxi, china 2. school of Mechanical Engineering and Automation, Northeastern university, shenyang 110004, liaoning, china 3. school of Civil and Environmental Engineering, East china Institute of technology, Fuzhou 344000, Jiangxi, china) [a] school of Nuclear Engineering and technology East China Institute of Technology Fuzhou 344000 Jiangxi China [b] school of Mechanical Engineering and Automation Northeastern University Shenyang 110004 Liaoning China [c] school of Civil and Environmental Engineering East China Institute of Technology Fuzhou 344000 Jiangxi China

The surface temperature of casting slab is an important parameter in the metallurgy field. Because the surface emissivity is uncertain and also unknown, it is difficult to measure the slab surface temperature accurately. A method based on preceded reflector and multi-wavelength was put forward to deal with the difficulty in surface temperature measurement of casting slab. On the premise of preceded reflector and non-preceded reflector, the method establishes the radiation energy equations and works out the emissivity and temperature in the equations. Also, the multilayer modeling of casting slab surface and multiple reflection-absorption process modeling were built by Monte Carlo method. The temperature measuring method had been applied in the continuous casting field. In order to verify the measured result, the thermal imaging method was adopted when the slab surface emissivity was set by repeated tests. Finally, the measured and verified temperature curves keep a same tendency and the error of the values is lower than 5℃. The comparison result shows that the method can measure temperature accurately.

关键词： casting slab emissivity surface temperature preceded reflector multi-wavelength

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Phase and structure of polycrystal Sr_(0.69) La_(0.31)F_(2.31)+SrS solid electrolyte material

引用

中国有色金属学会会刊：英文版 1999年第3期9卷 541-545页

作者： Tian Yanwen(田彦文), Ma Ping(马平), Zhang Xin(张新), Zhai Yuchun(翟玉春) school of materials and Metallurgy, Northeastern university, shenyang 110006, P. R. china Northeastern Univ Sch Met & Mat Shenyang 110006 Peoples R China

The phase and the structure of polycrystal material, which was prepared by calcining the co precipitated fluoride powder of Sr and La with a ratio of 0.69∶0.31 mixed with SrS powder, were investigated by X ray diffraction and electron probe scanning. In the materials, three phases were found, they are Sr 0.69 La 0.31 F 2.31 solid solution phase with a pure SrF 2 cubic structure whose lattice constant is 5.843 ?, SrS single phase with a NaCl cubic structure, and an unknown phase that is produced by the interaction of SrS and co precipitated powder. It was also found that SrS has no influence on the structure of Sr 0.69 La 0.31 F 2.31 solid solution.

关键词： X ray diffraction electron probe polycrystal Sr 0.69 La 0.31 F 2.31 +SrS material phase structure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of artificial aging on the deformation behavior of an Al-1.01Mg-0.68Si-1.78Cu alloy

引用

Rare Metals 2008年第5期27卷 531-535页

作者： HE Lizi CHEN Yanbo ZHANG Haitao CUI Jianzhong Key Lab of the Ministry of Education of china for Electromagnetic Processing of materials Northeastern University Shenyang 110004 China school of materials ＆ Metallurgy Northeastern University Shenyang 110004 China

The influences of artificial aging on the microstructures and mechanical properties of an Al-1.01Mg-0.68Si-1.78Cu alloy were investigated. The detailed fracture surfaces, precipitates, and dislocation structures were also examined through scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The results show that the tensile strengths exhibit two peak values and reach saturated values with increasing aging time, while the elongation decreases sharply to the minimum value and changes slightly later. The deformation and fracture behaviors are also closely related to the aging conditions.

关键词： Al-Mg-Si-Cu alloy aging deformation precipitates dislocation fracture

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Structure and Magnetostriction of (Dy_(0.7)Tb_(0.3))_(0.5)Pr_(0.5)Fe_x Alloys (1.10≤x≤1.85)

引用

Journal of materials Science & technology 2000年第2期16卷 177-178页

作者： Bowen WANG, Weili LIU, Guang JIN and Jianzhi BI (Department of materials Enginerring, shenyang Institute of technology, shenyang 110015, china) Ximei JIN, Zhijun GUO and Zhidong ZHANG (Institute of Metal Research, Chinese Academy of Seiences, shenyang 11 Department of materials Enginerring Shenyang Institute of Technology Shenyang 110015 China Institute of Metal Research Chinese Academy of Sciences Shenyang 110015 China

The structure and magnetostriction of R_0.5Pr_0.5Fex (R = Dy_0.7Tb_0.3,1.10 ≤x≤1.85) alloys were investigated. It was found that the matrix of arc-melting R_0.5Pr_0.5Fe_x alloys is the (Dy, Tb, Pr) Fe_2 phase with the MgCu_2-type cubic structure and the second phase is rare earth-rich phase when x25. In the range of 1.40≤x1.55. The crystalline structure of mechanically grinding R_0.5Pr_0.5Fe_x alloys is similar to that of the arc-melted alloys. The magnetostriction of the alloys increases with increasing Fe content when x ≤1.25 and decreases when x >1.25.

关键词： Structure and Magnetostriction of Fe_x Alloys Pr Tb Dy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of Cu on the Spinodal Decomposition of AlZn Alloy with Symmetrical Composition

引用

Journal of materials Science & technology 2005年第6期21卷 836-840页

作者： Shiming HAO+, Yuping REN, Hongxiao LI, Dapeng WANG and Gang ZHAOCollege of materials and Metallurgy, Northeastern university, shenyang 110004, china College of materials and Metallurgy Northeastern University Shenyang 110004 China

The effect of Cu addition on the spinodal decomposition of the Al-Zn alloy with symmetrical compositions has been investigated by X-ray diffraction analysis. It is found that the single fcc phase can be obtained in the AlZn alloy with the addition of 2 at. pct Cu after solution treatment at 400℃ and water quenching to room temperature. The modulation structure occurs in two types of alloys aged at room temperature for 30 min. The spinodal process remarkably slows down above or at the three phase equilibrium temperature, particularly at room temperature due to the addition of 2 at. pct Cu. The spinodal time increases by 20 times when aging at 300℃ and by more than 30 times when aging at room temperature.

关键词： Al-Zn(-Cu) alloy Spinodal decomposition Lattice parameter X-ray diffraction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

ISOTHERMAL SECTION AT 1000 AND 1100℃ OF Fe-Mn-Al PHASE DIAGRAM

引用

Acta Metallurgica Sinica(English Letters) 1993年第7期6卷 1-5页

作者： LIU Xingjun HAO Shiming SUN Rongyao Northeast university of technology,shenyang,china Department of materials Science and Engineering,Northeast university of technology,shenyang 110006,china

Phase equilibria at Fe-Mn side of isothermal section at 1000 and 1100℃ in Fe-Mn- Al system have been determined using the diffusion couple technique and metallography. A three-phase,α+γ+β,region was found at 1000℃.The method of solid/gas diffusion couple used to determine equilibrium phase composition is believed to be feasible for the system containing volatile component.

关键词： Fe-Mn-Al system phase equilibrium diffusion couple

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Precipitates in an isothermally aged Fe-18Cr-12Mn-0.04C-0.48N high-nitrogen austenitic stainless steel

引用

Rare Metals 2007年第S1期26卷 185-190页

作者： SHI Feng,WANG Lijun,CUI Wenfang,REN Yuping,LI Hongxiao,and LIU Chunming school of materials & Metallurgy,Northeastern university,shenyang 110004,china Northeastern Univ Sch Met & Mat Shenyang 110004 Peoples R China

Vertical section of Fe-18Cr-12Mn-0.04C-N system phase diagram varying with nitrogen content at 1×105 Pa was calculated using Thermo-Calc software and thermodynamic *** morphology and crystallography information of precipitates in Fe-18Cr-12Mn-0.04C-0.48N high-nitrogen austenitic stainless steel during isothermal aging at 800 ℃ after austenization was investigated using optical microscopy(OM),and transmission electron microscopy(TEM) with energy distribution spectrum(EDS).The experimental results show that three precipitates,(Cr,Fe,Mn)2(N,C),(Cr,Fe,Mn)23(C,N)6 and σ phase exist in this steel,which is consistent with the thermodynamic calculation,indicating that thermodynamic calculation can provide instructions for alloy composition design,heat treatment and prediction of precipitation sequence in Fe-18Cr-12Mn-0.04C-N system.

关键词： precipitate isothermal aging thermodynamic calculation phase diagram high nitrogen austenitic stainless steel

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fabrication of Ti_2AlC by Spark Plasma Sintering from Elemental Powders and Thermodynamics Analysis of Ti-Al-C System

引用

Journal of Wuhan university of technology(materials Science) 2007年第2期22卷 325-328页

作者：王苹 State Key Laboratory of Advanced technology for materials Synthesis and Processing Wuhan University of Technology

A ternary-layered carbide Ti2AlC material could be synthesized by spark plasma sintering（SPS） technology using elemental powder mixture of Ti, Al and active carbon. By means of XRD and SEM, phases were identified and microscopically evaluated. The experimental results show that the main phase in the product was fully crystallized Ti2AlC with small particle size when sintered at 1200℃. The synthesis temperature of SPS was 200-400℃ lower than that of hot pressing （HP） or hot isostatic pressing （HIP）. Through thermodynamics calculations, the mechanism of Ti2AlC was studied by calculating changes of Gibbs free energy of reactions.

关键词： Ti2AlC spark plasma sintering elemental powder thermodynamics analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Preparation of TiO2 and SiC Films from Their Precursors Using Electrospraying

引用

沈阳建筑大学学报（自然科学版） 2010年第6期26卷 1166-1171页

作者：时方晓 school of materials Science and Engineering Shenyang Jianzhu University

Titanium dioxide(TiO2) films were prepared by cone - jet mode electrospraying a titanium ethoxideprecursor solution onto a silicon *** effects of spraying time,substrate temperature and aging on thesurface morphology of the films prepared were *** films obtained after spraying for 600 s were aged atroom temperature to form a porous TiO2 network with pores in the size range of 100 - 500 *** filmswere prepared by spraying for 3 000 s,but these cracked on drying although it can be concluded that films pre-pared using a higher substrate temperature were *** this method,SiC coating was also prepared on anAl2O3 substrate using polysilane as a *** result implies the potential of an industrial production ofdye sensitized solar cells by electrospraying technique.

关键词： electrospraying cone-jet mode porous TiO2 films SiC coating surface morphology

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A simple method of synthesizing multi-wall carbon nanotubes/SnO core/shell nanostructure

引用

Rare Metals 2007年第S1期26卷 191-194页

作者： SUN Xue1),CHU Yi2),WANG Dawei3),DU Jinhong3),ZHANG Baoyou2),and WANG Fuping1)1) school of Science,Harbin Institute of technology,Harbin 150001,china 2) school of materials Science and Engineering,Harbin Institute of technology,Harbin 150001,china 3) shenyang National Laboratory for materials Science,Institute of Metal Research,Chinese Academy of Sciences,shenyang 110016,china Harbin Inst Technol Sch Sci Harbin 150001 Peoples R China Harbin Inst Technol Sch Mat Sci & Engn Harbin 150001 Peoples R China Chinese Acad Sci Inst Met Res Shenyang Natl Lab Mat Sci Shenyang 110016 Peoples R China

Multi-wall carbon nanotubes(MWNTs)/SnO core/shell nanosturcture was synthesized by a simple solution-based method,in which SnCl2 was solved in distilled water containing dispersed MWNTs,then stired,filtered and washed in ambient atmosphere,finally dryed in air at 90 ℃ for 6 *** MWNTs/SnO core/shell nanostructure was characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM).It is found that surface defects of MWNTs are necessary for the deposition of *** mechanism of the SnO nanocoating formation through the hydrolysis of SnCl2 in water(4SnCl_2+2H_2O-Sn_4(OH)2Cl_6+2HCl) was presented.

关键词： precipitate isothermal aging thermodynamic calculation phase diagram high nitrogen austenitic stainless steel

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：