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Research Article
Yongsheng Liu
Northwestern Polytechnical University
Corresponding Author
ORCiD: https://orcid.org/0000-0002-9020-7202
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This work is licensed under a CC BY 4.0 License. Read Full License
In this work, femtosecond laser assisted-chemical vapor infiltration (LA-CVI) was employed to produce C/SiC composites with 1, 3, and 5 rows of mass transfer channels. The effects of laser machining power on the quality of produced holes were investigated. The results showed that the increase in power yielded complete hole structures. The as-obtained C/SiC composites with different mass transfer channels displayed higher densification degrees with flexural strengths reaching 546±15 MPa for row mass transfer channel of 3. The strengthening mechanism of the composites was linked to the increase in densification and formation of “dense band” during LA-CVI process. Multiphysics finite element simulations of the dense band and density gradient of LA-CVI C/SiC composites revealed C/SiC composites with improved densification and lower porosity due to the formation of “dense band” during LA-CVI process. In sum, LA-CVI method looks promising for future preparation of ceramic matrix composites with high densities.
Keywords
C/SiC, LA-CVI, Mass transfer channels, Laser power, Flexural strength
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Received 03 Sep, 2020
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Received 02 Sep, 2020
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Received 31 Aug, 2020
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Received 29 Aug, 2020
Reviewer #4 agreed
On 22 Aug, 2020
Reviewer #3 agreed
On 19 Aug, 2020
Reviewer #2 agreed
On 19 Aug, 2020
Editor assigned
On 17 Aug, 2020
Reviewers invited
Invitations sent on 17 Aug, 2020
Reviewer #1 agreed
On 17 Aug, 2020
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On 16 Aug, 2020
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This preprint is under consideration at Journal of Advanced Ceramics. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Yongsheng Liu
Northwestern Polytechnical University
Corresponding Author
ORCiD: https://orcid.org/0000-0002-9020-7202
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
The most recent version of this article is available here.
No community comments so far
Reviewer #1 agreed
On 27 Sep, 2020
Review #1 received
Received 27 Sep, 2020
Reviewer #2 agreed
On 27 Sep, 2020
Review #2 received
Received 27 Sep, 2020
Reviewers invited
Invitations sent on 26 Sep, 2020
Editor assigned
On 23 Sep, 2020
Submission checks complete
On 22 Sep, 2020
Editor invited
On 22 Sep, 2020
Version 1
Posted 18 Aug, 2020
No comments provided
Editorial decision: Major revisions
On 04 Sep, 2020
Review #1 received
Received 03 Sep, 2020
Review #4 received
Received 02 Sep, 2020
Review #3 received
Received 31 Aug, 2020
Review #2 received
Received 29 Aug, 2020
Reviewer #4 agreed
On 22 Aug, 2020
Reviewer #3 agreed
On 19 Aug, 2020
Reviewer #2 agreed
On 19 Aug, 2020
Editor assigned
On 17 Aug, 2020
Reviewers invited
Invitations sent on 17 Aug, 2020
Reviewer #1 agreed
On 17 Aug, 2020
First submitted
On 16 Aug, 2020
Submission checks complete
On 16 Aug, 2020
Editor invited
On 16 Aug, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Ceramics
License:
This work is licensed under a CC BY 4.0 License. Read Full License
The most recent version of this article is available here.
In this work, femtosecond laser assisted-chemical vapor infiltration (LA-CVI) was employed to produce C/SiC composites with 1, 3, and 5 rows of mass transfer channels. The effects of laser machining power on the quality of produced holes were investigated. The results showed that the increase in power yielded complete hole structures. The as-obtained C/SiC composites with different mass transfer channels displayed higher densification degrees with flexural strengths reaching 546±15 MPa for row mass transfer channel of 3. The strengthening mechanism of the composites was linked to the increase in densification and formation of “dense band” during LA-CVI process. Multiphysics finite element simulations of the dense band and density gradient of LA-CVI C/SiC composites revealed C/SiC composites with improved densification and lower porosity due to the formation of “dense band” during LA-CVI process. In sum, LA-CVI method looks promising for future preparation of ceramic matrix composites with high densities.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
The full text of this article is available to read as a PDF.
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