Pressure-driven transformation of the Al coordination environment in oxide glass
In situ high-pressure neutron diffraction will be used to investigate the pressure-induced transformation of the Al coordination environment in the prototypical aluminosilicate glass-forming system CaO-MgO-Al2O3-SiO2 (CMAS) at pressures up to 8 GPa. Aluminium is an essential component in commercial display glass, where pressures in the gigapascal regime are easily generated by sharp-contact loading, and it is an abundant element in magma-related glasses such as those from the CMAS system. The pressure-induced conversion of tetrahedral AlO4 units into higher coordinated structural motifs will change the glass structure and associated material properties. It is therefore important to measure these changes by in situ neutron diffraction in order to aid in the development of realistic models for, e.g., crack formation and propagation in display glass, and the behaviour of magma-related materials under load.
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SALMON Philip Stephen; Henry E. Fischer; Lawrence Vincent Daniel Gammond; KLOTZ Stefan; Hesameddin Mohammadi and ZEIDLER Anita. (2019). Pressure-driven transformation of the Al coordination environment in oxide glass. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-05-1001
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