Effect of Cerium on the Viscosity of Liquid Fe-C Alloy of Eutectic Content

稀土学报(英文版), 2002, 20(6): 630-634.

滕新营 ^1, , 叶以富 ^2, , 刘含莲 ^3, , 王焕荣 ^4, , 石志强 ^5, , 耿浩然 ^6,

1.Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, South Campus of Shandong University, Jinan 250061,China

2.Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, South Campus of Shandong University, Jinan 2500;College of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China

3.College of Mechanical Engineering, Shandong University, Jinan 250061, China

4.Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, South Campus of Shandong University, Jinan 250061,China

5.Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, South Campus of Shandong University, Jinan 250061,China

6.Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, South Campus of Shandong University, Jinan 250061,China

基金项目: 国家自然科学基金(59871025)

Effect of Cerium on the Viscosity of Liquid Fe-C Alloy of Eutectic Content

Keywords： rare earths

The viscosities of liquid Fe-4.30C and Fe-4.30C-Ce alloys were measured by oscillating crucible viscometer. The results show that viscosity of Fe-4.30C alloy changes from 5.50 to 8.30 MPa*s when the liquid is cooled from 1425 ℃ to the melting point. The abnormity of viscosity of Fe-4.30C alloy near the melting point is reasonable due to the formation of graphite. The addition of cerium especially with content higher than 0.21% causes an evidently decrease in viscosity for eutectic alloy resulting from increase of free volume and size decrease of atom cluster in the liquids. It can be concended that the existence of C-Ce compound contributes to the discontinuous of viscosity at 1340～1370 ℃ for the Fe-4.30C-Ce alloy by experinments with differential scanning calorimeter.

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Effect of Cerium on the Viscosity of Liquid Fe-C Alloy of Eutectic Content

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