Setup for high-temperature surface Brillouin light scattering: Application to opaque thin films and coatings

D Faurie; N Girodon-Boulandet; A Kaladjian; F Challali; G Abadias; P Djemia

doi:10.1063/1.4975637

Setup for high-temperature surface Brillouin light scattering: Application to opaque thin films and coatings

Rev Sci Instrum. 2017 Feb;88(2):023903. doi: 10.1063/1.4975637.

Authors

D Faurie¹, N Girodon-Boulandet¹, A Kaladjian², F Challali¹, G Abadias³, P Djemia¹

Affiliations

¹ LSPM-CNRS, Université Paris 13, Sorbonne Paris Cité, 93430 Villetaneuse, France.
² LPL, UMR7538, Université Paris 13, Sorbonne Paris Cité, 93430 Villetaneuse, France.
³ Institut Pprime, CNRS, Département de Physique et Mécanique des Matériaux, Université de Poitiers, UPR 3346, BP 30179, 86962 Futuroscope, France.

PMID: 28249463
DOI: 10.1063/1.4975637

Abstract

A setup combining surface Brillouin light scattering with a high-temperature chamber has been developed. The temperature of the sample is controlled with a Bühler HDK chamber for optical measurements (maximum temperature of 1600 °C), in controlled atmospheres or high vacuum (10^-6 mbar). This setup allows the study of sound velocity of surface acoustic waves and of the elastic constants of opaque thin films and coatings in situ as a function of temperature from surface Brillouin light scattering, by analyzing the backscattered light from the sample at a fixed angle of incidence. In this paper, we will demonstrate the applications of this setup for metallic glass thin films devitrification study and evaluation of high temperature elastic properties of hard nitride coatings. This kind of study using surface acoustic waves is rare, in contrast to those made on transparent bulk materials.