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Erosion and mechanical properties of hydrothermally-resistant nanostructured zirconia components

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journal contribution
posted on 04.04.2018, 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.

Funding

EPSRC (EP/L024780/1) and Finance SouthEast (EPSRC Reference: EP/I500227/1).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Ceramics International

Volume

44

Issue

9

Pages

10539 - 10544

Citation

SAREMI-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.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This 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/

Acceptance date

10/03/2018

Publication date

2018-03-13

Notes

This 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.

ISSN

0272-8842

Language

en