NDLI: A simple way to prepare a precursor for ZrC

Content Provider	Springer Nature Link
Author	Li, Yong Chen, Si’an Ma, Xin Li, Guangde Hu, Haifeng Zhang, Yudi
Copyright Year	2016
Abstract	For cost reduction and process simplification, a homogenous liquid precursor for zirconium carbide (ZrC)–SiC ceramics was prepared by blending Zr(OC$_{4}$H$_{9}$)$_{4}$, divinylbenzene, and polycarbosilane (PCS). The mixture was cross-linked at 150 °C, decomposed to ZrO$_{2}$, carbon, and SiC at 800 °C, and then ZrO$_{2}$ and carbon reacted with each other via carbo-thermal reaction at 1500 °C to form ZrC–SiC ceramics that contained few ZrO$_{2}$. The ZrO$_{2}$ content was reduced either by increasing the temperature from 1500 to 1700 °C, or by extending the holding time from 1 to 2 h. Increasing the content of PCS in the precursor not only benefited the carbo-thermal reaction but also caused the generation of free carbon in the pyrolyzed ceramic products. When the precursor contained the optimal content of PCS, the ceramics fabricated from it had a Si/Zr molar ratio of 1. C/ZrC–SiC composites were successfully fabricated via precursor infiltration and pyrolysis using the precursor. The flexural strength and fracture toughness of the composites were 212 ± 44 MPa and 13.8 ± 1.6 MPa m$^{1/2}$, respectively.
Starting Page	5160
Ending Page	5169
Page Count	10
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	51
Issue Number	11
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2016-02-17
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Characterization and Evaluation of Materials Polymer Sciences Continuum Mechanics and Mechanics of Materials Crystallography Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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