TEM-MD characterization of KDP deformation mechanisms under nanoindentation

Yang，Shengyao1; Zhang，Liangchi2,3,4; Wu，Zhonghuai5; Webster，Richard F.6; Kong，Charlie6; Chang，Shery L.Y.6

2023-07-01

10.1016/j.jeurceramsoc.2023.02.031

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY   Impact Factor & Quartile

0955-2219

1873-619X

As a key material in an inertial confinement fusion system, potassium dihydrogen phosphate (KDP) and its component manufactured must possess extremely high surface and subsurface quality. In this letter, we present our first observation of the amorphization of KDP in the subsurface after nanoindentation on KDP under transmission electron microscopy (TEM). The results are in good agreement with our Molecular Dynamics (MD) simulation predictions. The findings provide an understanding of the deformation mechanisms of KDP under nanoindentation, and offer a sensitive approach to observing electron beam sensitive materials under TEM.

KDP crystals Molecular dynamics (MD) Nanoindentation Plastic deformation Transmission electron microscopy (TEM)

SCI

English

Corresponding

National Natural Science Foundation of China[52293401] ; Shenzhen Key Labora- tory of Cross-scale Manufacturing Mechanics Project[ZDSYS20200810171201007]

Materials Science

Materials Science, Ceramics

WOS:000955045400001

ELSEVIER SCI LTD

MATERIALS SCIENCE

2-s2.0-85148347851

Scopus

1.School of Mechanical and Mining Engineering,The University of Queensland,Brisbane,4072,Australia
2.Shenzhen Key Laboratory of Cross-scale Manufacturing Mechanics,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
3.SUSTech Institute for Manufacturing Innovation,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
4.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
5.Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology,School of Optics and Photonics,Beijing Institute of Technology,Beijing,100081,China
6.Electron Microscope Unit,Mark Wainwright Analytical Centre,The University of New South Wales,Sydney,2052,Australia

Yang，Shengyao,Zhang，Liangchi,Wu，Zhonghuai,et al. TEM-MD characterization of KDP deformation mechanisms under nanoindentation[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2023,43(8):3844-3848.

Yang，Shengyao,Zhang，Liangchi,Wu，Zhonghuai,Webster，Richard F.,Kong，Charlie,&Chang，Shery L.Y..(2023).TEM-MD characterization of KDP deformation mechanisms under nanoindentation.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,43(8),3844-3848.

Yang，Shengyao,et al."TEM-MD characterization of KDP deformation mechanisms under nanoindentation".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 43.8(2023):3844-3848.