材料期刊网

Luoyang Institute of Refractories Research Ministry of Metallurgical Industry

ZHONG Xiangchong Luoyang Institute of Refractories Research , Luoyang , China.

材料科学技术（英文）

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Professor XU Zhong-yu and his research activities

新型炭材料

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Discovery and Research of High Tc Superconductor in the Institute of Physics, Academia Sinica

CHEN Liquan A special member of CCAST (World Laboratory) , Post Address: Institute of Physics , Academia Sinica , P.O. Box. 603. Beijing , China.

材料科学技术（英文）

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Silicon Pickup of InterstitialFree Steel From MgOSiC Refractories

WEI Yaowu , LI Nan , CHEN Xiaoxia , HU Tieshan , RAO Jiangping , TAO Xiaolin

钢铁研究学报(英文版)

The silicon pickup of interstitialfree steel (IF steel) from resin bonded MgOSiC refractories is studied via a medium frequency induction furnace. Samples of IF steel were heated in MgOSiC crucibles with mould flux cover at 1 600 ℃ for 180 min. The silicon contents of IF steel samples taken from the molten steel in every 30 min were examined and the refractories after heating were investigated by electron probe microanalysis (EPMA) with energy dispersive spectrometer (EDS). The silicon content of steel rapidly increased in the first 90 min of heating, and then decreased because of the formation of liquid layer on the refractory. Liquid layer separated the liquid steel from the bulk refractory and stopped the pickup of silicon. At the same time, desilication via oxygen through the liquid layer and flux started to reduce the silicon content of the liquid steel.

关键词: MgOSiC refractory;silicon carbide;silicon content;steel

EFFECT OF Al AND Si ADDITIVES ON CORROSION RESISTANCE OF Al_2O_3-C REFRACTORIES IN MOLD COVER FLUX

CHEN Zhaoyou TIAN Shouxin Luoyang Institute of Refractories Research , Ministry of Metallurgical Industry , Luoyang , China

金属学报(英文版)

Simulative study on corrosion of Al_2O_3-C refractories by mold cover flux has been carried out by means of immersion method.The results show that there fractory exhibits best resistance to the flux corrosion while the ratio of additive Al and Si is approximately equal to one.In addi- tion,ZrO_2-C specimens exhibit better corrosion resistance to mold cover.flux than Al_2O_3-C specimens.

关键词: refractoty , null , null , null

Synthesis of Al₂O₃-SiC Composite and Its Effect on the Properties of Low-carbon MgO-C Refractories

Beiyue Ma Qiang Zhu Yong Sun Jingkun Yu Ying Li

材料科学技术（英文）

Al₂O₃-SiC composite was synthesized with pyrophyllite and natural graphite as raw materials by carbothermal reduction reaction under argon atmosphere. The effect of synthesis temperature on phase composition and microstructure was investigated. Low-carbon MgO-C refractories were prepared by using the synthesized Al₂O₃-SiC composite as additive. The effect of its addition on the slag penetration and corrosion resistance as well as oxidation resistance of the refractories was investigated, and the slag resistance and oxidation resistance mechanisms of the Al₂O₃-SiC composite were also discussed. The results show that the synthesis temperature has a great influence on preparation of Al₂O₃-SiC composite. The Al₂O₃-SiC composite can be synthesized at 1873-1973 K under argon atmosphere, with pyrophyllite and natural graphite as raw materials, and particle sizes of the composite synthesized at 1973 K are mainly distributed as 1-2 μm. The slag penetration and corrosion resistance of low-carbon MgO-C refractories can be remarkably improved by adding the synthesized Al₂O₃-SiC composite, and the oxidation resistance has an improvement to some extent. The increase of slag viscosity and the formation of MgAl₂O₄ can effectively inhibit the slag penetration and corrosion for the refractories.

关键词: Oxide-nonoxide composite , 碳热还原 , 渣渗透和侵蚀 , 抗氧化性 , 耐火材料

MICROSTRUCTURE AND PROPERTIES OF SiC_w/6061Al COMPOSITE The Author is now with Institute of Metal Research,Academia Sinica,China

MA Zongyi YAO Zhongkai Harbin Institute of Technology , Harbin , China

金属学报(英文版)

The SiC_w/Al composite prepared by squeeze casting has a combination of superior room temperature specific strength and modulus together with excellent thermal properties.The extrusion can make an improvement on the strength and ductility of the composite from 582 MPa as squeeze casted up to 639 MPa,and on the transformation from isotropic to the anisotropic structure.This seems to be explained by the orientation of whiskers and the densification of dislocations in matrix.TEM observation indicates that the stacking fault is the usual planar defect on the SiC_w surface. composite;;SiC whisker;;Al alloy;;microstructure

关键词: composite , null , null , null

Review On Research And Development Of Magnesium Alloys

Z. Yang , J.P. Li , J.X. Zhang , G.W.Lorimer , J. Robson , null , null , null , null

金属学报(英文版)

The current research and development of magnesium alloys is summarized. Several aspects of magnesium alloys are described: cast Mg alloy, wrought Mg alloy, and novel processing. The subjects are discussed individually and recommendations for further study are listed in the final section.

关键词: Magnesium alloys , null , null

Kunming Institute of Precious Metals

WANG Yonglu NING Yuantao Kunming Institute of Precious Metals , Kunming , China.

材料科学技术（英文）

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Introduction to atmospheric corrosion research in China

Science and Technology of Advanced Materials

In this paper, we introduce the research on atmospheric corrosion in China. We describe the climate characteristics and the classification of atmospheric corrosivity across the whole country. We also describe the rusting evolution under simulated wet/dry cyclic conditions. (C) 2007 NIMS and Elsevier Ltd. All rights reserved.

关键词: atmospheric corrosion;corrosivity;rusting evolution;weathering steels;rust;mechanism;so2;o-3;no2