About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
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| Symposium
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Additive Manufacturing of Thick Films Using Dry Aerosol Processes: Process Development, Materials, Process Optimization and Applications
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| Presentation Title |
Quasi Tempering of Glass via Dry Aerosol Deposition |
| Author(s) |
Paul A. Fuierer, Robert Borrego |
| On-Site Speaker (Planned) |
Paul A. Fuierer |
| Abstract Scope |
Dry aerosol deposition (DAD) is known to give robust ceramic films with high residual compressive stress. Together with ultrafine grain structure, such coatings may offer a unique approach to higher bend strength and damage tolerant glass. This talk will describe work starting with the deposition of approximately 2 micron thick alumina films on common glass. Profilometry bend measurements on single-side coated glass beams gave nominal compressive stress of about 400 MPa. Fabrication of thirty double-side coated beams allowed for statistical analysis of 4-point bend strength data. Compared to uncoated glass, DAD-treated glass showed 8% increase in average and characteristic strengths, and 24% increase in Weibull modulus. Closer attention to sample test orientation and fracture typology, with segregated data analysis, yields even greater increase in strength and modulus. Results suggest that DAD may represent an alternative for increasing the strength and reliability of glass. |