A method of manufacturing an air-tight ceramic container is disclosed. This method includes the steps of coating an active metal consisting of Ti and/or Zr on an opening end face of a ceramic tubular member in an amount of 0.1 to 10 mg/cm.sup.2, thereby forming an active metal layer, placing a brazing...http://www.google.es/patents/US4917642?utm_source=gb-gplus-sharePatente US4917642 - Air-tight ceramic container
