材料期刊网

Some Regularities of Continuous Solid Solutions of Alloy Systems

Jingkang GUO , Chonghe LI , Pei QIN , Honglin LIU and Nianyi CHEN(Shanghai Insitute of Motallurgy , Chinese Academy of Sciences , Shanghai , 200050 , China)

材料科学技术（英文）

A modified Miedema model and pattern recognition technique are used to establish the criteriafor the formation of continuous solid solutions in alloy systems, and to study the occurrence ofthe melting temperature minimum of continuous solid solutions.

关键词:

On the Formability of Some Metastable Alloy Phases

Bo TANG , Deshan KANG , Pei QING , Weiming ZHANG and Nianyi CHEN(Shanghai Institute of Metallurgy , Chinese Academy of Sciences , Shanghai , 200050 , China)

材料科学技术（英文）

Pattern recognition and neural network methods have been used to investigate the formability of metastable alloy phases, It has been found that some chemi cal bond parameters Such as valence electron number, electronegativity and metallic radii of cor-nponent elements are the dominating fac tors affecting metastable alloy phase formation. Some semi-empirical rules found in this way may be useful for the construction of expert system for materials design.

关键词:

Instability and Non-reproducibility of Gibbsite Precipitation Process in Alumina Powder Production

Mei HONG , Miaoxiu LIU , Weiming ZHANG , Bo TANG and Nianyi CHEN(Shanghai Institute of Metallurgy , Academia Sinica , Shanghai , 200050 , China)

材料科学技术（英文）

Gibbsite (Al2O3 3H2O) powder. used for alumina powder production. can be prepared by the decomposition of sodium alum inate solutions induced by dilution or partial neutral ization, This decomposition process exhibits an incubation period and instability or non-reproducibility in reaction kinetics, UV time-scanning spectra and Raman spectra change have been measured to investigate the solution in incubation period and the factors affecting the grain size of gibbsite precipitate

关键词:

Densification and Sintering Kinetics of Rare Earth (α′+ β′)-Sialon Composites

Hao WANG , T.S.YEN , Hanrui ZHUANG and Weiying SUN (State Key Lab. on High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai , 200050 , China)

材料科学技术（英文）

The sintering processes of Re-(α' + β')-sialon composites (Re=Sm, Dy, Yb) have been investigated by using a specially designed high temperature dilatometer. The initial densification of various samples starts at about 1200℃, and the maximum shrinkage rate of these sialon composites occurs at about 1500℃. The light rare earth sialon has a noticeably tower densification temperature and a higher final shrinkage. The sirtering kinetics of Re-(α' +β')-sialonare much more complex. The Kingery's liquid phase sintering model appears to be applicable,but the mechanism of mass transport in stage two appears to be changeable. The controlling factor shiffs from solution-precipitation to diffusion when densification process proceeds from the earlier part to the later part of this stage.

关键词:

关于多相材料的研究

材料导报

多相材料是材料研究发展的必然结果。提出多相材料的研究，目的是要拓宽材料研究的视野，主张模糊各类材料的界限，运用纳米材料制备技术，博采各类材料制备工艺之所长，以使用上的要求为材料研究的准则，制作出低成本和高性能稳定性的材料。还强调在考虑材料研究中的问题时，始终以满足使用要求为目标，并不一味地追求材料的高性能，务求创新。提倡用逆向思维来考虑多相材料的研完，研究对象则针对于信息、能源、生物和环保领域的应用。多相材料材料研究About the Research of Multi-phase MaterialsGuo Jingkun (Shanghai Institute of Ceramics,Chinese Academy of Sciences ,Shanghai 200050, China)

关键词:

SYNTHESIS OF TiN FILM WITH ION BEAM ENHANCED DEPOSITION AND ITS PROPERTIES

ZHOU Jiankun LIU Xianghuai CHEN Youshan WANG Xi ZHENG Zhihong HUANG Wei ZOU Shichang Shanghai Institute of Metallurgy , Academia Sinica , Shanghai , China

金属学报(英文版)

The TiN films were synthesized with an alternate process of depositing titanium from a E-gun evaporation source and 40 keV N~+ bombarding onto the target.It is shown from the composi- tion analysis and structure investigations using RBS,AES,TEM,XPS and X-ray diffraction spectrum that the formed fihns are mainly composed of TiN phase with grain size of 30—40 nm and without preferred orientation,the nitrogen content in the film is much less than that in case without N~+ bombarding,and an intermixed region about 40 nm thick exists between the film and the substrate.The films exhibt high microhardness and low friction. ZHOU Jiankun,Ion Beam Laboratory,Shanghai Institute of Metallurgy,Academia Sinica, Shanghai 200050,China

关键词: TiN film , null

电化学阴极保护系统中的电位和电流分布

邱枫

腐蚀学报（英文）

电化学阴极保护系统中的电位和电流分布邱枫(中国科学院上海冶金研究所九五届硕士研究生,上海200050)受电化学阴极保护的金属结构物表面的电位只有在一定的范围内才能受到有效的保护。因而,了解电位分布的规律是合理地设计阴极保护系统的必要条件。本文作者首先探讨了适用于阴极保护系统中电位和电流分布计算的有限元算法的应用范围,并提出了改善迭代收敛性的一种特殊的网格划分方法:在沿第二类边界面法向方向上适当细密地划分,....

关键词:

不同温度下AZ41镁基合金牺牲阳极的电化学行为

龚金保

腐蚀学报（英文）

不同温度下AZ41镁基合金牺牲阳极的电化学行为龚金保(中国科学院上海冶金研究所九六级硕士研究生上海200050)镁基牺牲阳极以往一般使用自然环境温度下保护地下钢铁构筑物,近年来提出了把它们扩大应用到加热的输油管道、贮罐等设备防腐蚀的新要求.然而,迄今为止还很少见到镁基牺牲阳极在较高温度下的电化学行为的报导.考虑到锌基牺牲阳极在较高温度下应用时电化学性能变劣,使我们联想到镁基牺牲阳极是否会出现类似的问题.本文研?...

关键词: