Hi, Thank you for your answer. What about the thikness of SI3N4? best, Alaa Starlight a écrit : > Hi, > > Use an ion barrier such as Si3N4 to trap the Na+ ions, then a glass to > Si3N4 interface at 400 C should bond. > > Best regards, > > Julian. -- Alaa el dine ALLOUCH Doctorant au LAAS-CNRS-Groupe N2IS 7 Av colonel Roche, 31077 Toulouse Tél : 05 61 33 78 71