Investigate the quality of coatings by Dielectric spectroscopy (CAT#: STEM-ST-0361-WXH)
Introduction
Today, various coatings are used in every industry imaginable. Many of these coatings have a protective nature to give the substrate (surface or piece to which the coating is applied) new life or a longer expected lifespan.
The principle of this technique is to apply an AC signal of small amplitude to an electrode immersed into an electrolyte. The initial disturbance (applied) and the response of the electrode is compared by measuring the phase shift of the current and voltage components and by the measurements of their amplitudes.
Applications
Used to study the response of a sample subjected to an applied electric field of fixed or changing frequency. DS describes the dielectric properties of a material as a function of frequency.