Elastic Constants by Resonant Ultrasound Spectroscopy – Application to Thermoelectrics and Aluminum Alloys

• Autorzy: Klobes, Benedikt
• Języki publikacji: EN

Abstrakty

EN

Resonant ultrasound spectroscopy is a non-destructive technique for determining the elastic constants of a material. In the context of thermoelectric materials, elastic constants can be used to investigate the speed of sound and, thus, the lattice thermal conductivity of a substance. For Mg2Si-Mg2Sn solid solutions, a possible connection between shear modulus and band convergence can be assumed in that way. Moreover, the rather low speed of sound in this system points towards a high contribution of optical phonons to thermal conductivity. Additionally, significant resonance frequency shifts are observed during natural aging of technical Al-Cu-Mg and Al-Mg-Si alloys, which are proposed to assist investigation of the early stages of clustering in the future.

Słowa kluczowe

EN

resonant ultrasound spectroscopy; elastic constants; thermoelectric materials; age hardening; aluminum alloys

• Czasopismo: Scientific Journal of Gdynia Maritime University
• Rocznik: 2019
• Tom: nr 112
• Strony: 60--68
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Klobes, Benedikt

• University of Applied Sciences, Bremerhaven, Laboratory of Nanotechnology, An der Karlstadt 8, 27568 Bremerhaven, Germany,

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Identyfikatory

DOI

10.26408/112.05