Micromechanics of Impact Damage in Glasses of the SiO2–TiO2 System

— Glasses of the SiO 2 –TiO 2 system are used as protective coatings, especially for materials with small thermal expansion. Combining acoustic emission measurements and Raman spectroscopy has made it possible to correlate specific features of the mechanical response of the glasses to impact damage...

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Bibliographic Details
Published in:Inorganic materials 2022-08, Vol.58 (8), p.872-876
Main Authors: Shcherbakov, I. P., Chmel’, A. E.
Format: Article
Language:English
Subjects:
Acoustic emission testing
Chemistry
Chemistry and Materials Science
Impact damage
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Mechanical analysis
Micromechanics
Phase separation
Protective coatings
Raman spectroscopy
Silicon dioxide
Thermal expansion
Titanium dioxide
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Summary:— Glasses of the SiO 2 –TiO 2 system are used as protective coatings, especially for materials with small thermal expansion. Combining acoustic emission measurements and Raman spectroscopy has made it possible to correlate specific features of the mechanical response of the glasses to impact damage with modifications of their structure on the addition of various TiO 2 dopant concentrations to silica. In the case of the glass containing 8 mol % TiO 2 , initial signs of phase separation showed up not only in the Raman spectrum, but also as a sharp change in the fracture behavior of the composite.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168522080106