Erosion and mechanical properties of hydrothermally-resistant nanostructured zirconia components
journal contributionposted on 2018-04-04, 10:45 authored by Sina Saremi-YarahmadiSina Saremi-Yarahmadi, J.G.P. Binner, Vaidhy VaidhyanathanVaidhy Vaidhyanathan
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.
EPSRC (EP/L024780/1) and Finance SouthEast (EPSRC Reference: EP/I500227/1).
- Aeronautical, Automotive, Chemical and Materials Engineering
Published inCeramics International
Pages10539 - 10544
CitationSAREMI-YARAHMADI, S., BINNER, J.G.P. and VAIDHYANATHAN, B., 2018. Erosion and mechanical properties of hydrothermally-resistant nanostructured zirconia components. Ceramics International, 44(9), pp. 10539-10544.
- AM (Accepted Manuscript)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
NotesThis paper was published in the journal Ceramics International and the definitive published version is available at https://doi.org/10.1016/j.ceramint.2018.03.074.