Phase transition and stability of brucite under high temperature and pressure: the intersection of geology and materials science

Phase structure transformation of brucite

Under high temperature and high pressure conditions, brucite may undergo a phase change and transform into anhydrous oxides such as magnesium oxide (MgO). This process is accompanied by the release of water and has an important impact on the water cycle in the subduction zone of the Earth's plates. Thermodynamic Analysis of Stability

Research has shown that brucite is stable under surface conditions, but under high temperature and pressure deep in the mantle, its stability decreases and it may transform into other more stable mineral phases. Experimental technology simulates natural conditions

Scientists use high-temperature and high-pressure experimental techniques, such as multi-anvils pressure devices and laser-heated diamond anvil technology, to simulate conditions deep in the earth, and analyze the phase structure of brucite using X-ray diffraction and Raman spectroscopy. Geological significance of hydrous minerals

The phase transition and stability of hydrous minerals such as brucite in subduction zones have far-reaching significance for understanding geological processes such as mantle water cycle, crust-mantle interaction, seismic activity, and magma generation.

Related research, such as the work of Li Xinyang and others, shows that the high-temperature and high-pressure phase transition research of brucite is not only of great significance to the field of geology, but also provides a theoretical basis for the field of materials science, especially in the development of high-temperature resistant and flame-retardant materials. The study of the phase structure and stability of brucite under extreme conditions not only deepens our understanding of the internal processes of the earth, but also provides a scientific basis for the development and application of new materials. These research results have important practical application value in predicting the performance of materials in extreme environments, especially in the design of high-temperature resistant and flame-retardant materials.