Ablation behaviour of ultra-high temperature ceramic matrix composites: role of MeSi⁠2 addition

Research output: Contribution to journalArticle

Standard

Ablation behaviour of ultra-high temperature ceramic matrix composites : role of MeSi⁠2 addition. / Silvestroni, Laura; Vinci, Antonio; Failla, Simone; Zoli, Luca; Rubio Diaz, Virtudes; Binner, Jon; Sciti, Diletta.

In: Journal of the European Ceramic Society, Vol. 39, No. 9, 01.08.2019, p. 2771-2781.

Research output: Contribution to journalArticle

Harvard

APA

Vancouver

Author

Silvestroni, Laura ; Vinci, Antonio ; Failla, Simone ; Zoli, Luca ; Rubio Diaz, Virtudes ; Binner, Jon ; Sciti, Diletta. / Ablation behaviour of ultra-high temperature ceramic matrix composites : role of MeSi⁠2 addition. In: Journal of the European Ceramic Society. 2019 ; Vol. 39, No. 9. pp. 2771-2781.

Bibtex

@article{e9995f34f0cb4bd39f2cccb97909a6e9,
title = "Ablation behaviour of ultra-high temperature ceramic matrix composites: role of MeSi⁠2 addition",
abstract = "A new class of ZrB2 composites reinforced with 40 vol% C short fibers and containing 5 vol% SiC in combination with 5 vol% MoSi2, HfSi2 or WSi2 successfully withstood extreme conditions in a oxyacetylene torch. Different responses to the torch testing were recorded depending on which secondary phase was present; this was primarily a result of the final density which ranged between 83 and 94% of the theoretical value. The temperatures achieved on the surfaces of the samples tested also varied as a function of the residual porosity and ranged from 2080 to 2240 °C. HfSi2 additions offered the best performance and exceeded that of the baseline material that contained only SiC. It is believed that this was due to its ability to promote the elimination of porosity during densification and to the refractory nature of its oxide, HfO2. In contrast, MoSi2 and WSi2 formed highly volatile oxides on the surface, which did not offer better protection than the ZrO2-SiO2 scale that developed in the baseline.",
author = "Laura Silvestroni and Antonio Vinci and Simone Failla and Luca Zoli and {Rubio Diaz}, Virtudes and Jon Binner and Diletta Sciti",
year = "2019",
month = aug,
day = "1",
doi = "10.1016/j.jeurceramsoc.2019.03.031",
language = "English",
volume = "39",
pages = "2771--2781",
journal = "Journal of the European Ceramic Society",
issn = "0955-2219",
publisher = "Elsevier",
number = "9",

}

RIS

TY - JOUR

T1 - Ablation behaviour of ultra-high temperature ceramic matrix composites

T2 - role of MeSi⁠2 addition

AU - Silvestroni, Laura

AU - Vinci, Antonio

AU - Failla, Simone

AU - Zoli, Luca

AU - Rubio Diaz, Virtudes

AU - Binner, Jon

AU - Sciti, Diletta

PY - 2019/8/1

Y1 - 2019/8/1

N2 - A new class of ZrB2 composites reinforced with 40 vol% C short fibers and containing 5 vol% SiC in combination with 5 vol% MoSi2, HfSi2 or WSi2 successfully withstood extreme conditions in a oxyacetylene torch. Different responses to the torch testing were recorded depending on which secondary phase was present; this was primarily a result of the final density which ranged between 83 and 94% of the theoretical value. The temperatures achieved on the surfaces of the samples tested also varied as a function of the residual porosity and ranged from 2080 to 2240 °C. HfSi2 additions offered the best performance and exceeded that of the baseline material that contained only SiC. It is believed that this was due to its ability to promote the elimination of porosity during densification and to the refractory nature of its oxide, HfO2. In contrast, MoSi2 and WSi2 formed highly volatile oxides on the surface, which did not offer better protection than the ZrO2-SiO2 scale that developed in the baseline.

AB - A new class of ZrB2 composites reinforced with 40 vol% C short fibers and containing 5 vol% SiC in combination with 5 vol% MoSi2, HfSi2 or WSi2 successfully withstood extreme conditions in a oxyacetylene torch. Different responses to the torch testing were recorded depending on which secondary phase was present; this was primarily a result of the final density which ranged between 83 and 94% of the theoretical value. The temperatures achieved on the surfaces of the samples tested also varied as a function of the residual porosity and ranged from 2080 to 2240 °C. HfSi2 additions offered the best performance and exceeded that of the baseline material that contained only SiC. It is believed that this was due to its ability to promote the elimination of porosity during densification and to the refractory nature of its oxide, HfO2. In contrast, MoSi2 and WSi2 formed highly volatile oxides on the surface, which did not offer better protection than the ZrO2-SiO2 scale that developed in the baseline.

U2 - 10.1016/j.jeurceramsoc.2019.03.031

DO - 10.1016/j.jeurceramsoc.2019.03.031

M3 - Article

VL - 39

SP - 2771

EP - 2781

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 9

ER -