Revealing of rich living radicals in oxide melts via weak magnetic effect on alumina dissolution reaction

作者：Li, Shenghao; Huang, Ao^*; Jiang, Tingting^*; Gu, Huazhi; Zeng, Fanbo; Wang, Xinlian; Zhang, Shuzhe

来源：Journal of Molecular Liquids, 2023, 375: 121391.

DOI：10.1016/j.molliq.2023.121391

• Oxide melts
• Alumina ceramic
• Dissolution reaction
• Radical coexistence structure
• Weak magnetic effect

Oxide melts are basic media in materials preparation, high-temperature processing and hot corrosion. The melt structure is essential to understand oxide melt properties and plays a fundamental role in cera-mic preparation and tailoring. In this work, the rich living radicals in oxide melts were discovered and verified by the variation in the dissolution reaction rate of alumina ceramic in oxide melts with the mag-netic flux density, as well as the ESR test results. The radical-rich coexistence structure and forming path of radicals were proposed beyond the traditional inorganic melt structure theory; the weak magnetic effect and associated controlling threshold on free radical reaction in high-temperature inorganic chem-ical process was revealed. It provides new thoughts on smelting and purification of metals, preparation of ceramic materials, corrosion resistance of refractories and high temperature inorganic reaction-related research.