Formation Conditions for Ce2O2S and CeAlO3 in Cerium Treated Al-Killed Steels

Cheng Chuan Wu; Xiao Hong Yang; Guo Guang Cheng

doi:10.4028/www.scientific.net/AMR.311-313.1032

Paper Titles

Experimental Investigation of Static Characteristics of a Vacuum Preloaded Aerostatic Bearing
p.1012

Study on the Interaction of Rare Earth (La) and Strontium with Titanium and Boron in the Al-Ti-B Based Master Alloy
p.1017

Studying the Structure and Semiconductor Properties of Passive Film on 316SS by XPS and Capacitance Measurement
p.1021

On the Dynamics of the Micro-Ring Driven by Traveling Bias Voltages
p.1027

Formation Conditions for Ce₂O₂S and CeAlO₃ in Cerium Treated Al-Killed Steels
p.1032

Study of Thermal Stress of Iron-Boron Alloy Casing
p.1039

Application and Study of Reactive Polyacrylate Microgel in Pigment Paint of Printed Fabric
p.1044

Research on Some Key Issues of Dynamic Simulation for Workflow Process
p.1049

Preparation and Properties of Rigid Cross-Linked PVC Foam
p.1056

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Formation Conditions for Ce₂O₂S and CeAlO₃ in Cerium Treated Al-Killed Steels

Abstract:

An investigation has been carried out to determine the formation conditions of Ce₂O₂S and CeAlO₃ in cerium treated Al-killed steel. Argon protection melts have been manufactured of appropriate base steel compositions with varying additions of cerium (0.006-0.04%). The work has shown that 0.0015-0.02% may be retained in steels after Al deoxidation and cerium treatment while oxygen and sulphur content be 14-17 ppm and 60-70 ppm respectively. With 0.0099-0.02% retained cerium, resulting inclusions are largely spheroidal in shape and consist of several crystalline compounds, notably Ce₂O₂S and CeAlO₃. Thermodynamic analysis indicates that the CeAlO₃ would be formed with the cerium content in the range of 8.65ppb to 1.45ppm when the content of aluminum was 0.01%.