Microstructure, mechanical, thermal, and oxidation properties of a Zr2[Al(Si)]4C5–SiC composite prepared by in situ reaction/hot-pressing

He, Lingfeng; Li, Fang-Zhi; Lu, Xiaohan; Bao, Yiwang; Zhou, Yanchun

doi:10.1016/j.jeurceramsoc.2010.02.005

Cited by 18 publications

(4 citation statements)

References 36 publications

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“…However, for high-temperature applications, its mechanical properties are still not satisfactory. To overcome these weakness, some works have been conducted to develop SiC reinforced Zr-Al(Si)-C composites [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Isothermal Oxidation Resistance of Zr3[Al(Si)]4C6-Based Composite Ceramics at 1000-1300°C in Air

Liu

Liang

et al. 2018

SSP

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The isothermal oxidation behavior of Zr3[Al(Si)]4C6-ZrB2-ZrC composite ceramics at 1000-1300 °C in air has been investigated. The oxidation kinetics of the composites and generally follows a parabolic law. At the same oxidation temperature and time, the weight gain per unit surface area, oxidation rate constant and oxide thickness of the composites are higher than those of monolithic Zr3[Al(Si)]4C6 ceramic. With the incorporation of ZrB2 and ZrC, the oxidation resistance of the composites becomes poor. The surfaces of the oxide layer have a loose and porous structure, consisting of mainly ZrO2 and little mullite, and there are no dense oxide films preventing the inward diffusion of oxygen element effectively.

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Section: Introductionmentioning

confidence: 99%

Isothermal Oxidation Resistance of Zr3[Al(Si)]4C6-Based Composite Ceramics at 1000-1300°C in Air

Liu

Liang

et al. 2018

SSP

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“…Incorporation of an appropriate second phase is an effective way to overcome these weaknesses. To date, there have been few studies carried out to improve the comprehensive performance of Zr 2 [Al(Si)] 4 C 5 by incorporating SiC . In recent years, a synergistic mechanism between two or more strengthening and toughening phase/methods in ceramic‐matrix composites has been reported, which can further enhance the composite strength and toughness over a singular strengthening method.…”

Section: Introductionmentioning

confidence: 99%

“…To date, there have been few studies carried out to improve the comprehensive performance of Zr 2 [Al(Si)] 4 C 5 by incorporating SiC. 6,[8][9][10] In recent years, a synergistic mechanism between two or more strengthening and toughening phase/methods in ceramic-matrix composites has been reported, which can further enhance the composite strength and toughness over a singular strengthening method. Zan et al 11 added the SiC whiskers as 2nd-level toughening agent into Al 2 O 3 layers in Al 2 O 3 / Ti 3 SiC 2 multilayer ceramics.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical, and Thermal Properties of (ZrB₂ + ZrC)/Zr₃[Al(Si)]₄C₆ Composite

Yang

Qiu

et al. 2014

J. Am. Ceram. Soc.

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The microstructure, mechanical, and thermal properties of in situ hot‐pressed 30 vol% (ZrB2+ZrC)/Zr3[Al(Si)]4C6 composite have been investigated and compared with monolithic Zr3[Al(Si)]4C6 ceramic. The composite is composed of ZrB2 and ZrC grains embedded in a Zr3[Al(Si)]4C6 matrix. The composite shows superior hardness (Vickers hardness of 16.4 GPa), stiffness (Young's modulus of 415 GPa), strength (bending strength of 621 MPa), and toughness (fracture toughness of 7.37 MPa·m1/2) compared with monolithic Zr3[Al(Si)]4C6. The composite retains high modulus of 357 GPa at 1430°C (86% of that at ambient temperature) due to clean grain boundaries with no glassy phase. In addition, the composite exhibits higher specific heat capacity and thermal conductivity but slightly lower coefficient of thermal expansion compared with monolithic Zr3[Al(Si)]4C6. The calculation of the thermal stress fracture resistance parameter (R) predicts a much improved thermal shock resistance of the composite. Based on these results, (ZrB2+ZrC)/Zr3[Al(Si)]4C6 composites show promising potential for high‐temperature and ultra high‐temperature applications.

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“…To improve their oxidation resistance, He et al 17 incorporated Si to Zr 2 Al 3 C 4 by silicon pack cementation. SiC was also added into Zr 2 Al 4 C 5 to form Zr 2 Al 4 C 5 /SiC composites to improve its ultrahigh temperature oxidation resistance 18,19 . In both cases, the oxidation resistance of Zr–Al–C ceramics was improved due to the formation of protective oxidation products, such as aluminosilicate glass, mullite, and ZrSiO 4 , which retarded the inward diffusion of oxygen during the oxidation due to the Si addition.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ti Dopant on the Mechanical Properties and Oxidation Behavior of Zr2[Al(Si)]4C5 Ceramics

Xiang

et al. 2011

Journal of the American Ceramic Society

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Ti‐doped Zr2[Al(Si)]4C5 solid solutions were prepared by an in situ hot‐pressing method and its effect on the mechanical properties and high‐temperature oxidation behavior were investigated. The solid solutions show comparable hardness, strength, and fracture toughness with Zr2[Al(Si)]4C5 except modulus, which decreases with Ti dopant content. The stiffness is maintained up to 1600°C, which derives from the clean grain boundaries without glassy phases. The oxidation resistance of [Zr1−x(Ti)x]2[Al(Si)]4C5 solid solutions at 1000°–1300°C is improved remarkably. The improved oxidation resistance is mostly due to the formation of a more protective oxide scale consisting of (Zr,Ti)O2, Al2O3, and mullite.

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Microstructure, mechanical, thermal, and oxidation properties of a Zr2[Al(Si)]4C5–SiC composite prepared by in situ reaction/hot-pressing

Cited by 18 publications

References 36 publications

Isothermal Oxidation Resistance of Zr<sub>3</sub>[Al(Si)]<sub>4</sub>C<sub>6</sub>-Based Composite Ceramics at 1000-1300°C in Air

Isothermal Oxidation Resistance of Zr<sub>3</sub>[Al(Si)]<sub>4</sub>C<sub>6</sub>-Based Composite Ceramics at 1000-1300°C in Air

Microstructure, Mechanical, and Thermal Properties of (ZrB₂ + ZrC)/Zr₃[Al(Si)]₄C₆ Composite

Effect of Ti Dopant on the Mechanical Properties and Oxidation Behavior of Zr2[Al(Si)]4C5 Ceramics

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Microstructure, mechanical, thermal, and oxidation properties of a Zr2[Al(Si)]4C5–SiC composite prepared by in situ reaction/hot-pressing

Cited by 18 publications

References 36 publications

Isothermal Oxidation Resistance of Zr<sub>3</sub>[Al(Si)]<sub>4</sub>C<sub>6</sub>-Based Composite Ceramics at 1000-1300°C in Air

Isothermal Oxidation Resistance of Zr<sub>3</sub>[Al(Si)]<sub>4</sub>C<sub>6</sub>-Based Composite Ceramics at 1000-1300°C in Air

Microstructure, Mechanical, and Thermal Properties of (ZrB2 + ZrC)/Zr3[Al(Si)]4C6 Composite

Effect of Ti Dopant on the Mechanical Properties and Oxidation Behavior of Zr2[Al(Si)]4C5 Ceramics

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Microstructure, Mechanical, and Thermal Properties of (ZrB₂ + ZrC)/Zr₃[Al(Si)]₄C₆ Composite