A novel interferometric dilatometer in the 4-300 K temperature range: thermal expansion coefficient of SRM-731 borosilicate glass and stainless steel-304

Year: 2013

Authors: Martelli V., Bianchini G., Natale E., Scarpellini D., Ventura G.

Autors Affiliation: LENS Institute, Via Nello Carrara 1, 50019 Sesto Fiorentino, Firenze, Italy; IFAC-CNR, Via Madonna del Piano 10, Sesto Fiorentino, Firenze, Italy; INAF – Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, Firenze, Italy; Dipartimento di Fisica, Università Degli Studi di Firenze, Firenze, Italy; INFN, Section of Florence, Via Sansone 1, Firenze I-50019, Italy

Abstract: We present a newly designed heterodyne interferometric dilatometer for the measurement of the coefficient of thermal expansion of solids in the 4-300 K temperature range. The instrument can measure non-monotonic thermal expansion curves and has an accuracy better than 200 nm across the whole 4-300 K measurement range. The compensation for the misalignment of the interferometer design and the configuration of the sample holder make the instrument suitable to carry out measurements on any kind of sample that can be produced in a bar or rod shape. The measurement of a standard SRM-731 borosilicate glass and an SS-304 sample are presented and compared with literature data.


Volume: 24 (10)      Pages from: 105203-1  to: 105203-7

KeyWords: Dilatometers; Expansion; Interferometry; Stainless steel; Thermal expansion; Thermoelectricity, Cryogenic temperatures; Interferometer designs; Literature data; Measurement range; Stainless steel-304; Temperature range; Thermal expansion coefficients; Thermal expansion curve, Borosilicate glass
DOI: 10.1088/0957-0233/24/10/105203

Citations: 5
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