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Grosso RL, Muccillo ENS, Muche DNF, Jawaharram GS, Barr CM, Monterrosa AM, Castro RHR, Hattar K, Dillon SJ. In Situ Transmission Electron Microscopy for Ultrahigh Temperature Mechanical Testing of ZrO 2. Nano Lett 2020; 20:1041-1046. [PMID: 31928016 DOI: 10.1021/acs.nanolett.9b04205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This work demonstrates a novel approach to ultrahigh-temperature mechanical testing using a combination of in situ nanomechanical testing and localized laser heating. The methodology is applied to characterizing and testing initially nanograined 10 mol % Sc2O3-stabilized ZrO2 up to its melting temperature. The results suggest that the low-temperature strength of nanograined, d < 50 nm, oxides is not influenced by creep. Tensile fracture of ZrO2 bicrystals produce a weak-temperature dependence suggesting that grain boundary energy dominates brittle fracture of grain boundaries even at high homologous temperatures; for example, T = 2050 °C or T ≈ 77% Tmelt. The maximum temperature for mechanical testing in this work is primarily limited by the instability of the sample, due to evaporation or melting, enabling a host of new opportunities for testing materials in the ultrahigh-temperature regime.
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Affiliation(s)
- Robson L Grosso
- Department of Materials Science and Engineering , University of Illinois Urbana-Champaign , Urbana , Illinois 61801 , United States
- Energy and Nuclear Research Institute - IPEN , P.O. Box, São Paulo 11049, Brazil
- Department of Materials Science and Engineering , University of California - Davis , Davis , California 95616 , United States
| | - Eliana N S Muccillo
- Energy and Nuclear Research Institute - IPEN , P.O. Box, São Paulo 11049, Brazil
| | - Dereck N F Muche
- Department of Materials Science and Engineering , University of California - Davis , Davis , California 95616 , United States
| | - Gowtham S Jawaharram
- Department of Materials Science and Engineering , University of Illinois Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Christopher M Barr
- Materials, Physical, and Chemical Sciences , Sandia National Laboratories , Albuquerque , New Mexico 87185 , United States
| | - Anthony M Monterrosa
- Materials, Physical, and Chemical Sciences , Sandia National Laboratories , Albuquerque , New Mexico 87185 , United States
| | - Ricardo H R Castro
- Department of Materials Science and Engineering , University of California - Davis , Davis , California 95616 , United States
| | - Khalid Hattar
- Materials, Physical, and Chemical Sciences , Sandia National Laboratories , Albuquerque , New Mexico 87185 , United States
| | - Shen J Dillon
- Department of Materials Science and Engineering , University of Illinois Urbana-Champaign , Urbana , Illinois 61801 , United States
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