| 摘要 |
PURPOSE:To improve sealing strength by forming a metalized layer covering the peripheral surface of an annular ceramic member as a sealing member with an alkali-resistant shape memory alloy. CONSTITUTION:When an alkali-resistant shape memory alloy ring 4b' is inserted to the outer periphery of a cylindrical ceramic member 4a and is heated at 900-1,000 deg.C in vacuum, the diameter of the ring 4b' is decreased by its shape memory effect, it is firmly compressed and stuck to the peripheral surface of the cylindrical ceramic member 4a, and the diffusion reaction of the fused alloy into ceramic on this interface proceeds satisfactorily. Accordingly, a sealing member 4 formed with a metalized layer 4b firmly sealing and covering the surface of the ceramic member 4a can be obtained. This metalized layer 4b has alkali resistance far excellent as compared with the conventional Mo-Mn alloy metalized layer. |
