| 摘要 |
PROBLEM TO BE SOLVED: To provide a reformer for a fuel cell preserving joining strength of a hydrogen separation pipe for a long period under a high temperature circumstances of 500 deg.C of higher and preventing the degradation of a joined part by vibration or shock. SOLUTION: The hydrogen separation pipe 3 is composed of porous ceramics of which the surface is covered with Ag-Pd alloy layer 3a of 10-30 μm thickness. An end of the pipe is open and the other end is closed. The metalized layer 8 composed of Ag-Cu-Ti alloy of 5-60 μm thickness and formed on an outer surface or an inner surface of one end is joined with the outer surface or the inner surface of the cylindrical metal fixing part 6 through solder 9 of which the melting point is 700 deg.C or higher and lower than the melting point of Ag-Pd alloy layer, and fixing in a reforming reaction furnace. |
