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Title: Microstructures, mechanical behavior and strengthening mechanism of TiSiCN nanocomposite films

Abstract

Recently, the arguments have existed in the strengthening mechanism and microstructural model of the nanocomposite film due to lack of the convincible experimental evidences. In this investigation, the quarternary TiSiCN nanocomposite films with the different C and Si contents are synthesized by the reactive-magnetron-sputtering technique. The TiSiCN film is characterized as the nanocomposite structure with the TiN nanocrystallites surrounded by the (Si3N4 + C + CNx) interface phase. When the C/Si content ratio is 2:2, the TiSiCN nanocomposite film is remarkably strengthened with the maximal hardness and elastic modulus of 46.1 GPa and 425 GPa, respectively. Meanwhile, the (Si3N4 + C + CNx) interfaces exhibit as a crystallized form, which can coordinate the growth misorientations and maintain the coherently epitaxial growth between the TiN nanocrystallites and interfaces. Through the high-resolution transmission electron microscopy (HRTEM) observations, this investigation firstly provides the direct experimental evidence for the crystallized feature of the interfaces when the TiSiCN nanocomposite film is strengthened, suggesting that the strengthening effect of the TiSiCN nanocomposite film can be attributed to the coherent-interface strengthening mechanism, which is expressed as the “nc-TiN/c-Si3N4/c-C/c-CNx” model.

Authors:
 [1];  [2];  [2];  [2];  [2];  [2];  [3];  [3]
  1. Univ. of Shanghai for Science and Technology, Shanghai (People's Republic of China); Jilin Univ., Changchun (People's Republic of China)
  2. Univ. of Shanghai for Science and Technology, Shanghai (People's Republic of China)
  3. The Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Univ. of Tennessee, Knoxville, TN (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1389777
Grant/Contract Number:  
FE0024054; FE0011194
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Mechanical properties; Structural properties

Citation Formats

Li, Wei, Liu, Ping, Xue, Zenghui, Ma, Fengcang, Zhang, Ke, Chen, Xiaohong, Feng, Rui, and Liaw, Peter K. Microstructures, mechanical behavior and strengthening mechanism of TiSiCN nanocomposite films. United States: N. p., 2017. Web. doi:10.1038/s41598-017-02186-1.
Li, Wei, Liu, Ping, Xue, Zenghui, Ma, Fengcang, Zhang, Ke, Chen, Xiaohong, Feng, Rui, & Liaw, Peter K. Microstructures, mechanical behavior and strengthening mechanism of TiSiCN nanocomposite films. United States. https://doi.org/10.1038/s41598-017-02186-1
Li, Wei, Liu, Ping, Xue, Zenghui, Ma, Fengcang, Zhang, Ke, Chen, Xiaohong, Feng, Rui, and Liaw, Peter K. Thu . "Microstructures, mechanical behavior and strengthening mechanism of TiSiCN nanocomposite films". United States. https://doi.org/10.1038/s41598-017-02186-1. https://www.osti.gov/servlets/purl/1389777.
@article{osti_1389777,
title = {Microstructures, mechanical behavior and strengthening mechanism of TiSiCN nanocomposite films},
author = {Li, Wei and Liu, Ping and Xue, Zenghui and Ma, Fengcang and Zhang, Ke and Chen, Xiaohong and Feng, Rui and Liaw, Peter K.},
abstractNote = {Recently, the arguments have existed in the strengthening mechanism and microstructural model of the nanocomposite film due to lack of the convincible experimental evidences. In this investigation, the quarternary TiSiCN nanocomposite films with the different C and Si contents are synthesized by the reactive-magnetron-sputtering technique. The TiSiCN film is characterized as the nanocomposite structure with the TiN nanocrystallites surrounded by the (Si3N4 + C + CNx) interface phase. When the C/Si content ratio is 2:2, the TiSiCN nanocomposite film is remarkably strengthened with the maximal hardness and elastic modulus of 46.1 GPa and 425 GPa, respectively. Meanwhile, the (Si3N4 + C + CNx) interfaces exhibit as a crystallized form, which can coordinate the growth misorientations and maintain the coherently epitaxial growth between the TiN nanocrystallites and interfaces. Through the high-resolution transmission electron microscopy (HRTEM) observations, this investigation firstly provides the direct experimental evidence for the crystallized feature of the interfaces when the TiSiCN nanocomposite film is strengthened, suggesting that the strengthening effect of the TiSiCN nanocomposite film can be attributed to the coherent-interface strengthening mechanism, which is expressed as the “nc-TiN/c-Si3N4/c-C/c-CNx” model.},
doi = {10.1038/s41598-017-02186-1},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {Thu May 18 00:00:00 EDT 2017},
month = {Thu May 18 00:00:00 EDT 2017}
}

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Cited by: 22 works
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Works referencing / citing this record:

Zero- and two-dimensional hybrid carbon phosphors for high colorimetric purity white light-emission
journal, January 2018