Oxidation of ZrB2 and its composites: a review

Inoue, Ryo; Arai, Yutaro; Kubota, Yuki; Kogo, Yasuo; Goto, Ken

doi:10.1007/s10853-018-2601-0

Cited by 67 publications

(25 citation statements)

References 117 publications

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“…Since the density of the Zr-Ti alloy is between the densities of Ti (4.51 g/cm 3 ) and Zr (6.52 g/cm 3 ) even when the Zr and Ti content in the alloys varies according to the reaction, it is recognized that 13-18 mm is the ideal height of the infiltrating alloy under the present conditions. Since the density of the Zr-Ti alloy is between the densities of Ti (4.51 g/cm 3 ) and Zr (6.52 g/cm 3 ) even when the Zr and Ti content in the alloys varies according to the reaction, it is recognized that 13-18 mm is the ideal height of the infiltrating alloy under the present conditions.…”

Section: Infiltration Of Zr-ti Alloys Into Model Preformmentioning

confidence: 81%

“…Transition metal borides and carbides with melting temperatures of >2500 • C are well known as ultrahigh-temperature ceramics (UHTCs) [1][2][3]. Some Ti-, Zr-, and Hf-based UHTCs and their composites with a dispersed second phase, such as SiC, MoSi 2 , and ZrSi 2 can be used in oxidizing atmospheres due to the fact that an oxide scale is formed, which prevents further oxidation [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Some Ti-, Zr-, and Hf-based UHTCs and their composites with a dispersed second phase, such as SiC, MoSi 2 , and ZrSi 2 can be used in oxidizing atmospheres due to the fact that an oxide scale is formed, which prevents further oxidation [4][5][6][7]. Moreover, the fracture toughness of UHTCs is almost the same as that of conventional engineering ceramics (2-6 MPa √ m) [2], and the density of UHTCs is relatively high (~6 g/cm 3 or higher) [1][2][3]. To facilitate the use of UHTCs in fabricating hot structures, such as leading edges and nose cones for hypersonic vehicles and thermal protection systems for re-entry vehicles, carbon-fiber-reinforced UHTC (C/UHTC) matrix composites have been developed [8].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, SiO(g) is formed by the oxidation of Si and/or SiC, which is not desirable for UHTC matrix composites exposed to temperatures above 2000 • C, since a SiO 2 (l) layer, which is well known as a barrier to oxygen diffusion, is not formed on the surface by the oxidation of Si and/or SiC [26,27]. Since SiO(g) is a gaseous species, the oxidation of Si and/or SiC causes the formation of a porous layer and the oxidized region is delaminated from the porous region [3,4,28,29]. Thus, the development of a Si-free MI method is required for the formation of C/UHTC matrix composites.…”

Section: Introductionmentioning

confidence: 99%

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

2021

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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.

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Section: Infiltration Of Zr-ti Alloys Into Model Preformmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

2021

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“…Corrosion problems can be detrimental and consequential leading to leakage and contamination. 9 The surface modification becomes a practical application in addressing these catastrophes. 10 Modification of the interface of substrate or surfaces is an act of changing or altering expose layers of metal to provide unique properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Time Effect on the Anticorrosion and Microstructural Properties of Zinc Flake Nickel–Phosphorus Coating Electrodeposited on Mild Steel

et al. 2021

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In this work, the potential of ZnSO 4 ·7H 2 O in NiP sulphate electrolyte deposited on mild steel under constant optimum pH of 5, current density of 1 A/cm 2 , stirring rate of 200 rpm, and varying time parameter between 10, 15, 20, and 25 min were studied using the electrodeposition method. The microstructure properties and corrosion resistance characteristics were analyzed using a scanning electron microscope enhanced with an energy-dispersive spectroscope and potentiodynamic polarization apparatus, respectively. The codeposited was subjected to different media test rig of 0.5 M H 2 SO 4 and 3.5% NaCl to examine the susceptibility effect. The results pointed out that there is a stable mass weight gain as the time increases, which facilitates the formation of dispersed crystal build-up and homogeneous NiPZn content within the interface. A remarkable corrosion property was also noticed with deposits of highest time effect, which is invariably a factor of solid bonding seen at the surface lattice.

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Enhanced Oxidation Resistance of ZrB₂–SiC–WC Composite below 1800 °C

Nussbaum,

Shter,

Mann‐Lahav

et al. 2024

Adv Eng Mater

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The effect of 3.6 vol.% WC addition to ZrB2‐20 vol.% SiC (ZSW) on oxidation resistance is studied over a broad range of oxidation temperatures, 1000‐1800 °C. Non‐WC‐containing samples (ZS) show significant surface damage and degradation during oxidation, losing protective B2O3 and SiO2‐based surface layers, exposing a porous ZrO2 layer and base material for further oxidation. ZSW samples preserve their surface protective layers during oxidation up to 1800 °C while the underlying ZrO2 scale remains dense. We report the appearance of convection cells on the surface of ZSW samples during oxidation above 1600 °C. This confirms the presence of boron‐rich phases, suppressing oxygen permeation into material, enhancing oxidation resistance of ZSW samples above. During exposure of the samples to 1800 ºC for 15 min, ZS and ZSW samples gained 11.1 ± 1.5 and 7.8 ± 0.3 mg cm‐2, respectively, due to oxidation. Exposure of the composites for 5 hours at 1600 ºC resulted in weight gains of 10.5 and 7.0 mg cm‐2 for ZS and ZSW samples, respectively. Cross‐sections of oxidized samples at 1800 °C show a tight zirconia layer below a glassy surface in ZSW and complete loss of surface glass in ZS, demonstrating the effectiveness of WC addition.This article is protected by copyright. All rights reserved.

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Oxidation of ZrB2 and its composites: a review

Cited by 67 publications

References 117 publications

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

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

Experimental Investigation and Time Effect on the Anticorrosion and Microstructural Properties of Zinc Flake Nickel–Phosphorus Coating Electrodeposited on Mild Steel

Enhanced Oxidation Resistance of ZrB₂–SiC–WC Composite below 1800 °C

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Oxidation of ZrB2 and its composites: a review

Cited by 67 publications

References 117 publications

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

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

Experimental Investigation and Time Effect on the Anticorrosion and Microstructural Properties of Zinc Flake Nickel–Phosphorus Coating Electrodeposited on Mild Steel

Enhanced Oxidation Resistance of ZrB2–SiC–WC Composite below 1800 °C

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Product

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Enhanced Oxidation Resistance of ZrB₂–SiC–WC Composite below 1800 °C