SEAL STRUCTURE OF CELL TUBE FOR FUEL CELL, AND FUEL CELL MODULE

PROBLEM TO BE SOLVED: To provide a seal structure of a cell tube for a fuel cell, which can secure sufficient sealing property over a long time and a reliable adhesiveness improvement membrane by configuring a required surface roughness to the adhesiveness improvement membrane, material blending rate that can prevent breaks caused by repetitive temperature increase and decrease and a particle size condition, and to provide a fuel cell module using the seal structure. SOLUTION: An adhesiveness improvement membrane 12 formed on the surface of a fuel cell tube base tube 4 is composed of calcium titanate (CaTiO3), calcia stabilized zirconia (CSZ) and yttria stabilized zirconia (YSZ), constituted of a mixture of 20 to 40 vol% CaTiO3and 80 to 60 vol% CSZ or YSZ. Moreover, CSZ or YSZ is constituted of crude particle components and fine particle components in different sizes, and 20 to 50 vol% crude particle components are contained. COPYRIGHT: (C)2009,JPO&INPIT