Sintering and Foaming of Barium Silicate Glass Powder Compacts
| Autor: | Boris Agea-Blanco, Ralf Müller, Stefan Reinsch |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Gas bubble
Materials science Materials Science (miscellaneous) chemistry.chemical_element Sintering 02 engineering and technology Glass matrix lcsh:Technology 01 natural sciences 0103 physical sciences Microscopy Ceramic SOFC Composite material Silicate glass Materials glass powder sintering 010302 applied physics lcsh:T foaming Metallurgy Extraction (chemistry) Barium degassing 021001 nanoscience & nanotechnology chemistry visual_art visual_art.visual_art_medium milling 0210 nano-technology |
| Zdroj: | Frontiers in Materials, Vol 3 (2016) |
| ISSN: | 2296-8016 |
| DOI: | 10.3389/fmats.2016.00045 |
| Popis: | The manufacture of sintered glasses and glass-ceramics, glass matrix composites, and glass-bounded ceramics or pastes is often affected by gas bubble formation. Against this background, we studied sintering and foaming of barium silicate glass powders used as SOFC sealants using different powder milling procedures. Sintering was measured by means of heating microscopy backed up by XPD, differential thermal analysis, vacuum hot extraction (VHE), and optical and electron microscopy. Foaming increased significantly as milling progressed. For moderately milled glass powders, subsequent storage in air could also promote foaming. Although the powder compacts were uniaxially pressed and sintered in air, the milling atmosphere significantly affected foaming. The strength of this effect increased in the order Ar ≈ N2 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|