Abstract
Large scale 50 × 50 mm sintered nanostructured zirconia ceramics were fabricated via industrially viable dry pressing routes. The green bodies were sintered by a two-stage process and the optimised sintering conditions are reported. The suitability of nanostructured zirconia for demanding applications in petrochemical valve components was investigated by slurry impingement erosion experiments. Zirconia showed a 60-fold improvement compared to commonly used stellite-coated commercial stainless steel specimens under test conditions while no tetragonal to monoclinic phase transformation was observed after erosion. The enhanced performance was also valid when compared with reported erosion resistant properties of alumina and zirconia components by a factor of 36 and 3, respectively. This suggests nanostructured zirconia as a potential robust alternative material for construction of internal trim components of petrochemical valves.
| Original language | English |
|---|---|
| Pages (from-to) | 10539-10544 |
| Number of pages | 6 |
| Journal | Ceramics International |
| Volume | 44 |
| Issue number | 9 |
| Early online date | 13 Mar 2018 |
| DOIs | |
| Publication status | Published - 15 Jun 2018 |
Keywords
- Hydrothermal ageing
- Nanostructured zirconia
- Pressing
- Sintering
- Slurry erosion
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry