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Opportunities and challenges in processing and fabrication of ultra high temperature ceramics for hypersonic space vehicles: a case study with ZrB2-SiC

Mukherjee, Ragini and Basu, Bikramjit (2018) Opportunities and challenges in processing and fabrication of ultra high temperature ceramics for hypersonic space vehicles: a case study with ZrB2-SiC. In: ADVANCES IN APPLIED CERAMICS, 117 (1, SI). S2-S8.

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Official URL: http://dx.doi.org/10.1080/17436753.2018.1509169

Abstract

Among ultra high temperature ceramics (UHTCs), ZrB2-based ceramics have received the most attention for applications in hypersonic space vehicles. However, UHTCs encounter several challenges pertaining to their processing to achieve the desired properties in order to optimally exploit their potential. In this perspective, the present work illustrates some of the sintering related challenges using a case study of ZrB2-SiC based ceramics. Multi stage spark plasma sintering is carried out on ZrB2-SiC based ceramics at 1500 degrees C with metallic Titanium as sinter-aid. High hardness of up to 28 GPa is obtained in dense ceramics with finer microstructure. Furthering towards design and fabrication of real scale hypersonic application such as thermal protection system, efforts have been taken to prove the scalability of the ceramics by consolidating up to phi 100 mm ceramic discs.

Item Type: Journal Article
Additional Information: 4th Conference on Ultra-High Temperature Ceramics - Materials for Extreme Environment Applications, Windsor, ENGLAND, SEP 17-20, 2017
Keywords: Ultra high temperature ceramics; zirconium diboride; spark plasma sintering; titanium; microstructure; hardness
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Depositing User: Id for Latest eprints
Date Deposited: 23 Dec 2018 06:38
Last Modified: 23 Dec 2018 06:38
URI: http://eprints.iisc.ac.in/id/eprint/61248

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