Attachment of Glass Nozzles to an Adapter Plate
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
The joining of single nozzle or multi-nozzle arrays to an adapter plate requires a corrosion-free resistant bond. The bonding material must also passivate the seal glass that holds the nozzle array together. A potential problem with an existing approach for multi-nozzle arrays is the requirement of extreme flatness and surface finish of its mating parts. In this situation, the adapter plate requires holes and each hole must be bonded to each nozzle. To avoid this problem, it is proposed that a brazing alloy of 80 wt% Au-Sn eutectic which melts at 280ŒC be used. To obtain a corrosion-free alloy, it is necessary to obtain a single Au-rich (97% a) phase, and it must be obtainable at low brazing temperatures, say between 400ŒC or 500ŒC.