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Article

Use of Zr–Ti Alloy Melt Infiltration for Fabricating Carbon-Fiber-Reinforced Ultrahigh-Temperature Ceramic Matrix Composites

1
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
2
Department of Mechanical Engineering, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Gérard L. Vignoles
J. Compos. Sci. 2021, 5(7), 186; https://doi.org/10.3390/jcs5070186
Received: 25 June 2021 / Revised: 12 July 2021 / Accepted: 15 July 2021 / Published: 16 July 2021
(This article belongs to the Special Issue Ceramic-Matrix Composites)
Carbon-fiber-reinforced ultrahigh-temperature ceramic (C/UHTC) matrix composites are an attractive candidate for fabricating various hot structures. The present study aimed to establish a Si-free Zr–Ti melt-infiltration method for fabricating C/UHTC matrix composites. To achieve this, the wettability of Zr–Ti alloys on carbon and their reactivity to carbon were examined. The alloys were melted on graphite plates and infiltrated into model preforms, which were made of porous carbon and had median pore diameters of 3 μm. The results showed that the apparent contact angle between Zr–Ti and C measured from melted alloys on carbon in room temperature was ~20–42° and that the alloys infiltrated into the preforms regardless of the Zr or Ti content. However, with an increase in the Zr content in the alloys, carbon disappeared and was absorbed into the alloys since the reactivity of Zr was higher than that of Ti and the specific surface area of the porous preform was higher than that of carbon-fiber-reinforced carbon composites, which are a typical preform of C/UHTC matrix composites. These results clearly indicate that not only the capillary flow during infiltration but also the reactivity of alloys to preforms should be considered in the process design for fabricating high-density composites via Zr–Ti infiltration. View Full-Text
Keywords: melt infiltration; Zr–Ti alloys; ultrahigh-temperature ceramic composites; capillary flow melt infiltration; Zr–Ti alloys; ultrahigh-temperature ceramic composites; capillary flow
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MDPI and ACS Style

Arai, Y.; Marumo, T.; Inoue, R. Use of Zr–Ti Alloy Melt Infiltration for Fabricating Carbon-Fiber-Reinforced Ultrahigh-Temperature Ceramic Matrix Composites. J. Compos. Sci. 2021, 5, 186. https://doi.org/10.3390/jcs5070186

AMA Style

Arai Y, Marumo T, Inoue R. Use of Zr–Ti Alloy Melt Infiltration for Fabricating Carbon-Fiber-Reinforced Ultrahigh-Temperature Ceramic Matrix Composites. Journal of Composites Science. 2021; 5(7):186. https://doi.org/10.3390/jcs5070186

Chicago/Turabian Style

Arai, Yutaro, Tomoki Marumo, and Ryo Inoue. 2021. "Use of Zr–Ti Alloy Melt Infiltration for Fabricating Carbon-Fiber-Reinforced Ultrahigh-Temperature Ceramic Matrix Composites" Journal of Composites Science 5, no. 7: 186. https://doi.org/10.3390/jcs5070186

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