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青年科协学术沙龙(第525场):Experimental Determination of Metal Oxidation States and Phase Equilibria in High-Temperature Metallurgical Systems

2026-11-10

主讲人:SvetlanaSineva 昆士兰大学 教授

时间:2026年11月13日 上午10:30

地点:三一大楼506

报告摘要:

Accurate experimental determination of the phase equilibria and iron oxidation states is essential for development and validation of thermodynamic models describing high-temperature metallurgical systems. This presentation highlights recent experimental investigations of phase equilibria and iron oxidation states in the Fe-O, Fe-Si-O and Cu-Fe-Si-O systems, with particular emphasis on the development and application of quantitative oxygen measurement by electron probe X-ray microanalysis (EPMA). The methodology enables the determination of full chemical compositions, including oxygen, and calculation of the Fe³⁺/ΣFeratios from elemental mass balance. The results demonstrate the importance of combining high-temperature equilibrium experiments, advanced microanalytical techniques, and thermodynamic modelling to improve the description of iron-bearing oxide systems. The presentation will discuss how experimentally determined phase compositions and Fe³⁺/ΣFeratios can contribute to thermodynamic database development, model validation and future investigations of ferrous and nonferrous metallurgical slags.

主讲人简介:

Dr SvetlanaSinevais a Research Fellow at the Pyrometallurgy Innovation laboratory (Pyrosearch), with more than 15 years of academic and industrial experience in pyrometallurgy and high-temperature thermodynamics. Her research focuses on phase equilibria, thermodynamics of complex metallurgical systems, and advanced SEM-EPMA methods. She successfully combines teaching and research and was recently granted Fellowship of the Higher Education Academy (FHEA).

She has authored more than 40 peer-reviewed publications and has extensive experience in research, teaching, and HDR supervision. Before joining UQ, she worked in industry at Norilsk Nickel and as an Associate Professor at Peter the Great St Petersburg Polytechnic University.