材料期刊网

PHASE DIAGRAMS OF KF-LiCI-BaCl_2 AND LiF-LiCI-BaCl_2 SYSTEMS

YAN Licheng YANG Jinxiu ZHU Lei , XU Jingyan Shanghai University of Science andTechnology , Shanghai , ChinaFAN Jinxia Suzhou Teachers′ School , Suzhou , China YAN Licheng , Associate Professor , Dept.of Chemistry , Shanghai University of Science and Technology , Shanghai 201800 , China

金属学报(英文版)

The phase diagrams of molten salt systems KF-LiCI-BaCl_2 and LiCI-LiF-BaCl_2 have been determined by visual polythermal method.The relationship between the change of cation radius of monovalent fluoride and the areas of primary crystal region in the phase diagrams is discussed.

关键词: phase diagram , null , null , null , null

EFFECT OF LASER SCANNING SPEED ON PHASE CONSTITUTION AND WEAR RESISTANCE OF LASER CLADDING HARD FACING ALLOY STELLITE 12

XU Yourong ZHANG Henghua CHEN Darning XIE Fuchun XU Mingyu Shanghai University of Science and Technology , Shanghai , ChinaCHEN Lanying SU Baorong QIAN Hongbin Shanghai Optics and Fine Mechinery Research Institute , Academia Sinica , Shanghai , China XU Yourong , professor , Department of Materials Science and Engineering , Shanghai University of Science and Technology , Shanghai 201800 , China

金属学报(英文版)

Effect of laser scanning speed on phase constitution,microstructure,microhardness and wear resistance of laser-cladding hard facing alloy Stellite 12 has been investigated by means of a cross-flow-type CO_2 laser of 1.5 kW.The laser-cladding layer on the alloy consists of ma- trix phase of suppersaturated solid solution γ(Co,Cr)and complex hexagonal carbide M_7C_3.Under certain condition,at higher laser scanning speed,the suppersaturated solubility of elements increases in γ(Co,Cr),and the precipitation of the complex carbtde M_7C_3 de- creases,so the microhardness increases and the wear resistance decreases.But at slower laser scanning speed,more complex carbide M_7C_3 may precipitate,and the wear resistance may be improved.Therefore,it is believed that the principal factor in improving wear resistance is the precipitation of carbide M_7C_3,while increment of microhardness is the suppersaturated solu- bility of elements in matrix phase γ(Co,Cr).

关键词: laser-cladding , null , null , null

COMPUTERIZED SIMULATION OF MOLTEN SALT SOLUTION OF Li,KF,Cl SYSTEM BY MOLECULAR DYNAMIC METHOD

SHAO Jun Shanghai University of Science and Technology , Shanghai , ChinaXU Hua CHEN Nianyi Shanghai Institute of Metallurgy , Academia Sinica , Shanghai , China SHAO Jun Associate Professor , Dept.of Chemistry , Shanghai University of Science and Technology , Shanghai 201800 , China

金属学报(英文版)

The structure and properties of molten salt solution o J Li,KF,Cl system have been investigedby computerized simulation of molecular dynamic method.The partial RDF,the partial molarenergy of mixing and the diffusion coeffients of Li~+,K~+,F~- and Cl~- have been calculated.The results are in agreement with the experimental values.The regularities of the distributionof ions and mieroscopic holes are discussed based on the results of computerized simulation.

关键词: alkali halide , null , null , null

Influence of the Preparative History on Physico-chemical Properties of Sodium Aluminate Solutions

CHEN Nianyi LIU Miaoxiu YANG Jinxiu ** Shanghai Institute of Metallurgy , Academia Sinica , Shanghai , 200050 , China*** Laboratory of Theoretical Chemistry , Shanghai University of Science and Technology , Shanghai , 200180 , China+ To whom correspondence should be addr

材料科学技术（英文）

关键词: sodium aluminate solution , null , null