The paper presents the first study of the abrasion resistance and degradation processes of magnetron-sputtered Nb3Sn coatings on electropolished (EP) or chemical polished (CP) copper substrates. The coating-substrate system is of interest for application in radio frequency superconducting cavities as an improvement on bulk niobium cavities. The microstructural and chemical properties ... https://safeersappliancers.shop/product-category/bosch-serie-4-gsn29vw3vg-no-frost-161x60cm-200l-freestanding-upright-freezers/