Characterization of a high temperature ceramics produced via two-step additive manufacturing
| Autor: | Ivan Yu Archakov, Olga Yu Kurapova, S. N. Golubev, Vladimir G. Konakov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Selective laser melting Two step Clay industries. Ceramics. Glass Green body Mullite Thermal expansion Electronic Optical and Magnetic Materials Characterization (materials science) law.invention Biomaterials Selective laser sintering TP785-869 law visual_art Powder bed fusion Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Composite material Shrinkage |
| Zdroj: | Open Ceramics, Vol 7, Iss, Pp 100165-(2021) |
| ISSN: | 2666-5395 |
| Popis: | Selective laser sintering (SLS) is a prospective technology to manufacture ceramic of complex geometry. However it is limited by the poor sinterability of ceramics and steady cracks formation. The paper highlights a new strategy to fabricate ceramics produced via two-step procedure: metal-ceramic green body manufacturing by SLS with further conversion into the Al2O3-based ceramics by high-temperature oxidation. Via shrinkage test it was shown that the developed production process could be treated as non-shrinkable since the deviations in the samples linear dimensions are less than 0.3–0.4%. According to XRD results produced material is suitable for a long-term exploitation (>1000 h) at temperatures below 1250 °C and for a short-time (1–2 h) usage at 1300 °C. The thermal expansion of the material is close to that typical for alumina-based ceramics, it is constant up to 1000 °C with a following slight decrease up to 1400 °C due to microamounts of mullite formation. |
| Databáze: | OpenAIRE |
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