EVALUATION TESTS OF A LOW-SINTER-TEMPERATURE, CERAMIC METALIZING PROCESS.
Research and Development technical rept.,
ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
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A series of evaluation tests were made of a low-sinter-temperature, refractory-metal-oxides MoO3MnO2 ceramic metalizing suspension. The tests were made to determine what limitations, if any, exist for the application of the low-sinter-temperature 900C to 1100C metalizing suspension for electron-tube fabrication. The metalizing suspension was found to be easy to handle, especially since ordinary brazing furnaces rather than special high-temperature sinter furnaces can be used for the sintering process. In addition, no overplating of the sintered-metalized ceramic surfaces was needed to produce high-strength, hermetic seals. The highest tensile strength, most reliable ceramic-to-ceramic and ceramic-to-metal seals were obtained when the maximum sinter temperature of 1100C was used in conjunction with the vacuum-tube grade solders OFHC copper, nickel-gold eutectic, and gold-copper eutectic. Author
- Electrical and Electronic Equipment
- Ceramics, Refractories and Glass
- Fabrication Metallurgy