检索结果-南通市图书馆

Influence of Ru addition on microstructure and stress-rupture property of Ni-based single crystal superalloys

Progress in Natural Science:Materials International 2010年第1期20卷 61-69页

作者： Jing-yang CHEN~1,Qiang FENG~(1,2),La-mei CAO~3,Zu-qing SUN~1 1.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing, Beijing 100083,China 2.National Center for Materials Service Safety,University of Science and Technology Beijing,Beijing 100083,China 3.National Key Laboratory of Science and Technology on Advanced High Temperature Structural Materials, Beijing institute of Aeronautical Materials,Beijing 100095,China Univ Sci & Technol Beijing State Key Lab Adv Met & Mat Beijing 100083 Peoples R China Univ Sci & Technol Beijing Natl Ctr Mat Serv Safety Beijing 100083 Peoples R China Beijing inst Aeronaut Mat Natl Key Lab Sci & Technol Adv High Temp Struct M Beijing 100095 Peoples R China

The effects of Ru on the microstructure and stress-rupture property were investigated in two experimental Ni-based single crystal superalloys with and without Ru addition(5.1%,mass fraction).The results indicate that the morphology ofγ' precipitates in the dendrite core and interdendritic region are intermediate and nearly spherical,respectively,in the Ru-free alloy after being aged at 1100℃for 8 *** Re partitioning ratio increases due to Ru addition and Ru partitioned preferentially to theγphase in both dendrite core and interdendritic region of the Ru-containing alloy,which results in more negative lattice misfit and more cuboidalγ' ***,theγ' volume fraction increases while the precipitate size and y channel width decreases due to Ru addition in both dendrite core and interdendritic *** addition improves the stress-rupture life at 1100℃/140 MPa significantly due to higherγ' volume fraction,more negative lattice misfit and a well rafting structure as well as lessγchannel width.

关键词： Ni-based superalloys ruthenium elemental partitioning ratio lattice misfit γ’ morphology stress-rupture property

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Mathematical Delineation of the Thermophysical Process of Electron Beam Welding

引用

稀有金属材料与工程 2011年第S4期40卷 134-137页

作者： Wang Xuedong1,2,Fu Pengfei 1,Shi Qingyu 2 1National Key Laboratory of Science and Technology on Power Beam Processes,Beijing Aeronautical Manufacturing Research institute,Beijing 100024,China2 Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China Beijing Aeronaut Mfg Res inst Natl Key Lab Sci & Technol Power Beam Proc Beijing 100024 Peoples R China Tsinghua Univ Dept Mech Engn Beijing 100084 Peoples R China

Multiple factors and complicated coupling relationships exist in the weldment during EBW,in order to comprehend this process,a mathematical delineation method based on a main line was presented in this *** on the main line,the complicated coupling relationships existing in EBW were reproduced by mathematical *** calculational results were in well agreement with the experimental *** mathematical delineation was an effective method to comprehend the features and essence of EBW.

关键词： electron beam welding mass transfer identification of phase interface keyhole

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

Crystal and Molecular Structure of Quinide

引用

Chinese Journal of Structural Chemistry 1996年第5期15卷 400-403页

作者： WANG Gang-Li ZHAO Shu-Jie CHEN De-Chang(National institute for the Control of Pharmaceutical and Biological Product, Beijing, 100050)LU Yang WU Nan ZHENG Qi-Tai(institute of Material Medical,the Chinese Academy of Medical Sciences, Beijing, 100050) natl. inst. Contr. Pharmaceut./B.P. Beijing 100050 institute of Material Medical Chinese Academy of Medical Sciences Beijing 100050

A pure title compound was isolated from water soluble extraction of the fruits of Gardenia sootepensis Hutch.,and its crystal structure was determined by X-ray diffraction. The crystal, chemical formula C_7H_(10)O_5 and Mr 174. 15, is colorless,transparent and belongs to monoclinic system, space group P2_1. The crystal data are as follows:a=6.467(4), b=18.349(4), c=7. 041(4), β= 116. 21 (5)°,V=749.7(6), Z=4,Dx=1.543 g/cm￣3,F(000)=368,μ=0.08 mm-1,λ(MoKα) =0. 7106,R=0.063. It is weak hydrobonds that result in slight conformation difference between the intermolecular H-bond associated molecules.

关键词： gardenia sootepensis quinide crystal 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

Study on Transformation of CaO-Al_2O_3-SiO_2-MgO System Inclusions in ZG06Cr13Ni4Mo Stainless Steel

引用

Journal of Iron and Steel Research International 2011年第S2期18卷 341-346页

作者： LIU Jian-hui1,3, DONG Han1,3, ZHU Rong2, LI Shi-qi2 (1. institute for Structural Materials,Central Iron and Steel Research institute, Beijing 100081,China 2. School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing, Beijing 100083,China 3. National Engineering Research Center of Advanced Steel Technology, Beijing 100081,China) Cent Iron & Steel Res inst Inst Struct Mat Beijing 100081 Peoples R China Univ Sci & Technol Beijing Sch Met & Ecol Engn Beijing 100083 Peoples R China natl Engn Res Ctr Adv Steel Technol Beijing 100081 Peoples R China

This paper aims at generally studying on the inclusions of ZGG06Cr13Ni4Mo ultra-low carbon stainless steel used for large scale hydraulic turbine sets. On the basis of analysis the industrial test samples, thermodynamic software FactSage is used to study inclusions transformation process in CaO-SiO2-Al2O3-MgO system while stainless steel is been smelting. The results illustrate the inclusions melting points and plasticity variation law. The reasonable inclusions plasticity controlling area is found out in low melting point. The melting point is up to 1280℃ While MgO weight concentration is 10% in CaO-SiO2-Al2O3-MgO system, SiO2, Al2O3 and CaO in inclusions are in weight concentration range of 50-70%, 10-20% and 10-40%, respectively. For purpose of gaining low melting point inclusions, silicon alumina radio in deoxidant should be controlled between 2-5 for ultra-low carbon stainless steel refining in industry.

关键词： ZG06Cr13Ni4Mo stainless steel low melting point inclusion thermodynamic calculation

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

Photocatalytic C-H Bonds Activation:Ambient Carbonylation of Cyclohexane by Co(acac)_2 Under Ultraviolet Irradiation

引用

Chinese Chemical Letters 1997年第9期8卷 763-764页

作者： Da Bin GAo Jing Mei YIN Ming GUO Yuan YU(Departemnt of Chemistry & Chemical Engineering, Dalian University, Dalian 116622)Yong An MA(National Marine Environmental Monitoring Center, institute of Marine Environmental Protection, State Oceanic Administrat DALIAN UNIV TECHNOL DEPT CHEM & CHEM ENGN DALIAN 116622 PEOPLES R CHINA STATE OCEAN ADM INST MARINE ENVIRONM PROTECT NATL MARINE ENVIRONM MONITORING CTR DALIAN 116023 PEOPLES R CHINA

A high turnover number was achieved in the photocatalytic carbonylation of C - H bonds of cyclohexane catalyzed by Co (acac)2 under ambient conditions (1 atm,25℃) to give mainly cyclohexanecarboxaldehyde.

关键词： acac Photocatalytic C-H Bonds Activation Under Ultraviolet Irradiation

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

Professor Malcolm Mason: what could we do against cancer?

引用

Chinese Journal of Cancer Research 2014年第6期26卷 737-739页

作者： Eunice X Xu Yongshi Jiang Cardiff Univ Sch Med Cardiff CF10 3AX S Glam Wales UK natl Canc Res inst Prostate Canc Clin Studies Grp London England

During the 9th National Gastric Cancer Academic Conference in Beijing,June 28th,2014,the editor of Chinese Journal of Cancer Research（CJCR）had the honor of meeting Professor Malcolm Mason from Cardiff University School of Medicine and invited him to share his expert opinions about cancer staging and treatment for prostate cancer,as well as his experience of serving as director for Wales Cancer Bank.

关键词： Mason honor Wales director serving staging editor CJCR interested consent

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

Energy-coupling mechanism of the multidrug resistance transporter AcrB： Evidence for membrane potential-driving hypothesis through mutagenic analysis

引用

Protein & Cell 2017年第8期8卷 623-627页

作者： Liu, Min Zhang, Xuejun C. Chinese Acad Sci Inst Biophys CAS Ctr Excellence Biomacromol Natl Lab Biomacromol Beijing 100101 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China

Dear Editor, RND （resistance nodulation-cell division） exporters are widely expressed across the lineage of Gram-negative bacteria （Fig. S1 ）. Their functional role is to utilize the protonmotive force of the cell to drive the expulsion of cytotoxic substances from the outer leaflet of the inner membrane as well as the periplasm to extracellular space （Yamaguchi et al., 2015）.

关键词：突变分析耦合机制 acrB 驱动膜电位转运体证据假说

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

Transition Temperature of Bi_2Sr_2CaCu_2O_(8+x) Superconducting Films Prepared from Commercial Precursors

引用

稀有金属材料与工程 2011年第S3期40卷 368-371页

作者： Bi Yue1, Wang Sansheng1, Hao Qingbin2 1 Inertial technology Key Laboratory of Fundamental Science for National Defense, Beihang University, Beijing 100191, China 2 Northwest institute for Nonferrous Metal Research, Xi,an 710016, China Beihang Univ Sch Instrument Sci & Optoelect Engn Inertial Technol Key Lab Fundamental Sci Natl Def Beijing 100191 Peoples R China NW inst Nonferrous Met Res Xian 710016 Peoples R China

This paper have made a systematic study of the superconducting Bi-2212 phase transition temperature, which has a transition temperature (Tc) around 80-93 K, and depends on precise control of synthesis conditions, mainly including heat treatment parameters, oxygen partial pressure, and annealing temperature. Partial melting of the sample during preparation helps to raise its Tc. To elucidate the origin of this strong effect, the samples were heated with different melting process. The rapid changes in Tc value are associated with small changes in oxygen content, which depends on the annealing temperature and the oxygen partial pressure. We have optimized the above mentioned parameters for Bi-2212 film, and Tconset was improved to 93 K.

关键词： Bi-2212 phase partial melt process transition temperature

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 Facile Synthesis of 3-Oxo-7αH-eudesma-4-ene-9β, 12-diol

引用

Chinese Chemical Letters 1998年第7期9卷 625-627页

作者： Li Jun LIU Yong Gang CHEN Zhao Ming XIONG Jiang LI Gang ZHOUand Yu Lin Li(National Laboratory of Applied Organic Chemistry and institute of Organic Chemistry, Lanzhou University, Lanzhou 730000)(Ningxia Medical College, Yinchuan 750001) Lanzhou Univ Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China Lanzhou Univ Inst Organ Chem Lanzhou 730000 Peoples R China Ningxia Med Coll Yinchuan 750001 Peoples R China

A facile ndxture of the C-11 isomeric 3 - oxo-7αH-eudes ma-4-en- 9β, 1 2-diol has been achieved ffom oxycarvone. The C-11 configuration of natural product is established through comparison of IHNMR spectra between ... 详细信息

关键词： Synthesis Sesquiterpenoid 3-oxo-7αH-eudesma-4-en-9β 12-diol oxycarvone

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

Coevolution signals capture the specific packing of secondary structures in protein architecture

引用

Protein & Cell 2014年第6期5卷 480-483页

作者： Deng, Lizong Dong, Xiaoxi Wu, Aiping Song, Tingrui Jiang, Taijiao Chinese Acad Sci Inst Biophys Natl Lab Biomacromol Key Lab Prot & Peptide Pharmaceut Beijing 100101 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China

Decoding protein structural characteristics and formation is essential to the understanding of its function. Despite the diversity and enormity of protein universe, the dissection of known protein structures has identified regular secondary structure elements （SSEs）, namely, a-helix and β-strand, that constitute the basic structural elements of protein universe （Levitt and Chothia, 1976）. As a remarkable characteristics of the overall topology of a polypeptide, the specific spatial arrangement of these SSEs is a hallmark of the protein tertiary conformation （Murzin et al., 1995）.

关键词： Specific Packing Physiochemical Property Protein Structure Prediction Protein Universe Protein Topology

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：