TY - JOUR
T1 - In Situ Transmission Electron Microscopy for Ultrahigh Temperature Mechanical Testing of ZrO2
AU - Grosso, Robson L.
AU - Muccillo, Eliana N.S.
AU - Muche, Dereck N.F.
AU - Jawaharram, Gowtham S.
AU - Barr, Christopher M.
AU - Monterrosa, Anthony M.
AU - Castro, Ricardo H.R.
AU - Hattar, Khalid
AU - Dillon, Shen J.
N1 - Support from National Science Foundation under Grant DMR 1922867 is acknowledged by S.J.D. R.G. and E.M. gratefully acknowledge FAPESP (2016/06205-1 and 2017/25501-3), CAPES (Finance code 001), and CNPq (305889/2018-4) for financial support. D.M. acknowledges CNPq (236631/2012-8). Support from the Army Research Office Grants W911NF1810361 and W911NF1710026 are acknowledged by R.C. This work was carried out in part in the Frederick Seitz Materials Research Laboratory Central Research Facilities, University of Illinois at Urbana\u2013Champaign. C.M.B. and K.H. were supported by the DOE-BES Materials Science and Engineering Division under FWP 15013170. This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. DOE\u2019s National Nuclear Security Administration under contract DE-NA-0003525. The views expressed in the article do not necessarily represent the views of the U.S. DOE or the United States Government.
PY - 2020/2/12
Y1 - 2020/2/12
N2 - This work demonstrates a novel approach to ultrahigherature 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 lowerature strength of nanograined, d < 50 nm, oxides is not influenced by creep. Tensile fracture of ZrO2 bicrystals produce a weakerature 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 ultrahigherature regime.
AB - This work demonstrates a novel approach to ultrahigherature 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 lowerature strength of nanograined, d < 50 nm, oxides is not influenced by creep. Tensile fracture of ZrO2 bicrystals produce a weakerature 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 ultrahigherature regime.
KW - Grain boundary
KW - In situ
KW - Nanocrystalline
KW - Nanomechanical testing
KW - Transmission electron microscopy
KW - Ultrahigh temperature
UR - https://www.scopus.com/pages/publications/85078673975
UR - https://www.scopus.com/inward/citedby.url?scp=85078673975&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.9b04205
DO - 10.1021/acs.nanolett.9b04205
M3 - Article
C2 - 31928016
AN - SCOPUS:85078673975
SN - 1530-6984
VL - 20
SP - 1041
EP - 1046
JO - Nano letters
JF - Nano letters
IS - 2
ER -