Microstructure-mechanical properties correlation in irradiated amorphous SiOC

Qing Su; Sean King; Liyi Li; Tianyao Wang; Jonathan Gigax; Lin Shao; William A. Lanford; Michael Nastasi

doi:10.1016/j.scriptamat.2017.11.053

Microstructure-mechanical properties correlation in irradiated amorphous SiOC

Qing Su
, Sean King
, Liyi Li
, Tianyao Wang
, Jonathan Gigax
, Lin Shao
, William A. Lanford
, Michael Nastasi

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

The microstructure and mechanical properties of amorphous silicon oxycarbide (SiOC) before and after irradiation were investigated using Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), Rutherford backscattering spectrometry (RBS), nuclear reaction analysis and nano-indentation. SiOC films of different compositions were subjected 1 displacement per atom (dpa) He⁺ irradiation. The irradiation results in a decrease of Si–O–Si bond angle and an increase of average coordination number. These microstructure variations are associated with increases of hardness and Young's modulus. Our findings reveal that mechanical properties correlate with the Si–O–Si bond angle and average coordination number in irradiated amorphous SiOC alloys.

Original language	English
Pages (from-to)	316-320
Number of pages	5
Journal	Scripta Materialia
Volume	146
DOIs	https://doi.org/10.1016/j.scriptamat.2017.11.053
State	Published - Mar 15 2018
Externally published	Yes

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title = "Microstructure-mechanical properties correlation in irradiated amorphous SiOC",

abstract = "The microstructure and mechanical properties of amorphous silicon oxycarbide (SiOC) before and after irradiation were investigated using Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), Rutherford backscattering spectrometry (RBS), nuclear reaction analysis and nano-indentation. SiOC films of different compositions were subjected 1 displacement per atom (dpa) He+ irradiation. The irradiation results in a decrease of Si{\textendash}O{\textendash}Si bond angle and an increase of average coordination number. These microstructure variations are associated with increases of hardness and Young's modulus. Our findings reveal that mechanical properties correlate with the Si{\textendash}O{\textendash}Si bond angle and average coordination number in irradiated amorphous SiOC alloys.",

author = "Qing Su and Sean King and Liyi Li and Tianyao Wang and Jonathan Gigax and Lin Shao and Lanford, \{William A.\} and Michael Nastasi",

year = "2018",

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doi = "10.1016/j.scriptamat.2017.11.053",

language = "English",

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journal = "Scripta Materialia",

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TY - JOUR

T1 - Microstructure-mechanical properties correlation in irradiated amorphous SiOC

AU - Su, Qing

AU - King, Sean

AU - Li, Liyi

AU - Wang, Tianyao

AU - Gigax, Jonathan

AU - Shao, Lin

AU - Lanford, William A.

AU - Nastasi, Michael

PY - 2018/3/15

Y1 - 2018/3/15

N2 - The microstructure and mechanical properties of amorphous silicon oxycarbide (SiOC) before and after irradiation were investigated using Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), Rutherford backscattering spectrometry (RBS), nuclear reaction analysis and nano-indentation. SiOC films of different compositions were subjected 1 displacement per atom (dpa) He+ irradiation. The irradiation results in a decrease of Si–O–Si bond angle and an increase of average coordination number. These microstructure variations are associated with increases of hardness and Young's modulus. Our findings reveal that mechanical properties correlate with the Si–O–Si bond angle and average coordination number in irradiated amorphous SiOC alloys.

AB - The microstructure and mechanical properties of amorphous silicon oxycarbide (SiOC) before and after irradiation were investigated using Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), Rutherford backscattering spectrometry (RBS), nuclear reaction analysis and nano-indentation. SiOC films of different compositions were subjected 1 displacement per atom (dpa) He+ irradiation. The irradiation results in a decrease of Si–O–Si bond angle and an increase of average coordination number. These microstructure variations are associated with increases of hardness and Young's modulus. Our findings reveal that mechanical properties correlate with the Si–O–Si bond angle and average coordination number in irradiated amorphous SiOC alloys.

UR - https://www.scopus.com/pages/publications/85038911992

U2 - 10.1016/j.scriptamat.2017.11.053

DO - 10.1016/j.scriptamat.2017.11.053

M3 - Article

SN - 1359-6462

VL - 146

SP - 316

EP - 320

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Microstructure-mechanical properties correlation in irradiated amorphous SiOC

Abstract

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