Citation:
Gucci F, D'Isanto F, Zhang R, et al., (2019) Oxidation protective hybrid coating for thermoelectric materials. Materials, Volume 12, Issue 4, February 2019, Article number 573
Abstract:
Two commercial hybrid coatings, cured at temperatures lower than 300 °C, were successfully used to protect magnesium silicide stannide and zinc-doped tetrahedrite thermoelectrics. The oxidation rate of magnesium silicide at 500 °C in air was substantially reduced after 120 h with the application of the solvent-based coating and a slight increase in power factor was observed. The water-based coating was effective in preventing an increase in electrical resistivity for a coated tethtraedrite, preserving its power factor after 48 h at 350 °C.