Non-Arrhenius Viscosity Models for Molten Silicate Slags with Constant Pre-Exponential Parameter: A Comparison to Arrhenius Model

作者：Gan, Lei^*; Lai, Chaobin; Xiong, Huihui

来源：High Temperature Materials and Processes, 2016, 35(3): 261-267.

DOI：10.1515/htmp-2014-0197

• non-Arrhenius viscosity model
• molten silicate slag
• low-temperature viscosity
• glass transition temperature

The accuracies of molten slag viscosity fitting and low-temperature extrapolation were compared between four two-variable models: Arrhenius, Weymann-Frenkel (WF), and Vogel-Fulcher-Tammann (VFT) and Mauro, Yue, Ellison, Gupta and Allan (MYEGA) models with constant pre-exponential parameter, based on a molten slag viscosity database consisting of over 800 compositions and 5,000 measurements. It is found that over wide ranges of pre-exponential parameter, the VFT and MYEGA models have lower viscosity fitting errors and much higher low-temperature viscosity extrapolation accuracies than Arrhenius and WF models. The pre-exponential parameter values of -2.8 for VFT and -2.3 for MYEGA are recommended.

• 出版日期2016-3
• 单位江西理工大学