Non-destructive evaluation of ceramic porosity using terahertz time-domain spectroscopy

被引：0

作者：

Hakobyan, Davit ^{[1
]}

Hamdi, Maher ^{[1
]}

Redon, Olivier ^{[1
]}

Ballestero, Anthony ^{[2
]}

Mayaudon, Alexis ^{[2
]}

Boyer, Laurence ^{[2
]}

Durand, Olivier ^{[2
]}

Abraham, Emmanuel ^{[3
]}

机构：

[1] CEA Tech Nouvelle Aquitaine, Coeur Bersol Batiment B,28 Ave Gustave Eiffel, F-33600 Pessac, France

[2] Ctr Technol Transfers Ceram, Parc Ester Technopole,7 Rue Soyouz, F-87068 Limoges, France

[3] Univ Bordeaux, CNRS, LOMA, UMR 5798, F-33400 Talence, France

来源：

2021 46TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) | 2021年

关键词：

D O I：

10.1109/IRMMW-THz50926.2021.9566905

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We measured the dielectric constants of alumina ceramic samples with non-destructive THz time-domain spectroscopy. Using an effective medium approximation, we demonstrated that the relative permittivity can be used to evaluate the porous alumina samples, with porosity fractions ranging from 0% to 20% per volume. This result can be used to control sample porosity, a key material parameter related to mechanical strength under compression load, hardness and wear resistance, or thermal stability.

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