Indentation properties of ZrO{sub 2}-SiO{sub 2} coatings on glass substrates
Journal Article
·
· Materials Research Bulletin
Sol-gel coatings of different composition in the ZrO{sub 2}-SiO{sub 2} system have been prepared, starting from several precursors (alkoxides and alkylalkoxides). Common soda lime silicate glass slides were used as substrates for coating deposition. The Vickers microhardness, H{sub V}, of the coated glass substrates have slightly higher values than that of uncoated glass. Young modulus, E, values for coated glass substrates are higher than that of uncoated glass. To compare the mechanical properties of the samples, the ratio H{sub V}/K{sub IC} (where K{sub IC} is the toughness) has been calculated and the concept of fragility discussed. The fragility of coated samples increases as the ZrO{sub 2} content diminishes and the SiO{sub 2} increases. Both scanning and transmission electron microscopy observations were performed to characterise the textural and microstructural properties of the coatings.
- OSTI ID:
- 20883143
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 11-12 Vol. 38; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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