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Reactive melt infiltration of carbon fibre reinforced ZrB2/B composites with Zr2Cu

Vinci, Antonio and Zoli, Luca and Galizia, Pietro and Kütemeyer, Marius and Koch, Dietmar and Friess, Martin and Sciti, Diletta (2020) Reactive melt infiltration of carbon fibre reinforced ZrB2/B composites with Zr2Cu. Composites Part A Applied Science and Manufacturing, 137 (105973). Elsevier. doi: 10.1016/j.compositesa.2020.105973. ISSN 1359-835X.

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Abstract

The microstructure and mechanical properties of carbon fibre reinforced ZrB2 composites produced by slurry infiltration and consolidated by reactive melt infiltration were investigated. Fibres were preliminary infiltrated with ZrB2/B slurries with varying ZrB2/B ratios. Then the composites were infiltrated with Zr2Cu melt at 1200 °C under vacuum. Boron was chosen as the reactant phase, while raw ZrB2 was added as a filler to prevent excessive swelling. With increase of boron content the infiltration becomes more difficult due to the reaction of alloy and boron. The boron is completely converted to nano ZrB2 grains. Some ZrC is produced from the side reaction between Zr2Cu and the carbon fibre, resulting in reduction of fibre diameter. The flexural strength increased from 360 to 560 MPa with the increase of boron content, while KIc amounted to 10 MPa⋅m0.5 but was affected by large scatter. The mechanical behaviour was mostly dominated by matrix properties.

Item URL in elib:https://elib.dlr.de/140002/
Document Type:Article
Title:Reactive melt infiltration of carbon fibre reinforced ZrB2/B composites with Zr2Cu
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Vinci, AntonioCNR-ISTEC, ItalyUNSPECIFIED
Zoli, LucaCNR-ISTEC, ItalyUNSPECIFIED
Galizia, PietroCNR-ISTEC, ItalyUNSPECIFIED
Kütemeyer, MariusMarius.Kuetemeyer (at) dlr.deUNSPECIFIED
Koch, DietmarDietmar.Koch (at) dlr.dehttps://orcid.org/0000-0003-4504-8721
Friess, MartinMartin.Friess (at) dlr.deUNSPECIFIED
Sciti, DilettaCNR-ISTEC, ItalyUNSPECIFIED
Date:October 2020
Journal or Publication Title:Composites Part A Applied Science and Manufacturing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:137
DOI :10.1016/j.compositesa.2020.105973
Publisher:Elsevier
ISSN:1359-835X
Status:Published
Keywords:Ceramic-matrix composites (CMCs); Liquid metal infiltration; Microstructural analysis; Mechanical properties
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Friess, Dr.rer.nat. Martin
Deposited On:04 Jan 2021 15:20
Last Modified:04 Jan 2021 15:20

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