Al2O3-ZrO2-SiO2 ternary glasses for molybdenum oxidation barriers
The wettability of binary and ternary glasses belonging to SiO2 - Al2O3-ZrO2 diagram has been studied using the sessile drop technique at 1750° and 180°C. The ternary SiO 2-Al2O3-ZrO2 (90-5-5 wt%) glass has proved to be well appropriated as a molybdenum oxidation barrier coating. The addition of 5 wt% of MoO2 slightly improves its wettablity at higher temperatures without affecting its oxidation barrier properties. The Mo comes into the glass network as a mixture of Mo5+, Mo4+, and Mo6+. After oxidation at 1000°C in oxygen atmosphere, the molybdenum remains in the glass network as Mo6+.
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| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | artículo biblioteca |
| Published: |
American Ceramic Society
2005
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| Online Access: | http://hdl.handle.net/10261/223550 http://dx.doi.org/10.13039/501100006280 |
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