(1)H, (27)Al, (29)Si and (39)K solid-state NMR are reported from a Hungarian illite 2:1 clay for samples heated up 1600 degrees C. This single-phase sample has a small amount of aluminium substitution in the silica layer and very low iron-content ( approximately 0.4wt%). Thermal analysis shows several events that can be related to features in the NMR spectra, and hence changes in the atomic sca...

Introduction: There is currently significant interest in all-ceramic dental restorations. A potential non-metallic material for such restorations is an apatite-mullite glass-ceramic that could be processed to shape using different processing techniques. The aim of this study was to assess and evaluate the ability of an apatite-mullite glass-ceramic material to be processed using three routes: l...

Articles you may be interested in Direct measurement of shear properties of microfibers Rev. Noncontact quantitative spatial mapping of stress and flexural rigidity in thin membranes using a picosecond transient grating photoacoustic technique Displacement of droplets and deformation of thin liquid layers using flexural vibrations of structures. Influence of acoustic radiation pressure Flexural...

The hydrothermal formation of sodium hydroxyborate enclathrated sodalite synthesized from an initial ternary mixture of mullite, cristobalite and corundum has been investigated. Depending on temperature and pressure the compound Na7-5[AlSi04]6[B(0H)4]1.5 • 2H20 could be synthesized in form of polycrystalline powder as well as in form of single crystals. The kinetics of the sodalite growth could...

Mullite is an aluminosilicate of the composition Al2(Al212xSi222x)O102x with x generally ranging between 0.2 and 0.5. XRD and 29Si and 27Al nuclear magnetic resonance (NMR) have been used to investigate the structure of various mullite compositions (x 5 0.26, 0.36, 0.42, and 0.69) as well as sillimanite (x 5 0) and g-Al2O3 (x 5 1). 27Al magic angle spinning (MAS) NMR of the central and satellit...