Abstract
Sealing is a major issue in Solid Oxide Cell (SOC) used for hydrogen production. Currently, a slurry composed of glass powder, organic solvents and adjuvants, is used as a seal. After the deposition of the slurry on the areas to be sealed, a heat treatment allows to obtain a glass-ceramic. This shaping process is very convenient but the obtained material presents porosity. This study aims to understand the evolution of porosity as a function of time and temperature in order to minimize it. A significant increase in porosity is observed when the temperature increases. The porosity evolution is characterized by an increase in pores size and a reduction of pores number, typical of a coalescence phenomenon. At high temperature, the viscosity is low enough to allow pores to rise in the sample. This weakens the upper part of the seal and may cause a loss of sealing.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
