The role of process parameters; time, temperature and applied pressure, in fabricating ceramic-ceramic joints with a metallic interlayer through pressure assisted air brazing in a purpose built furnace has been studied. The focus has been mainly on the alumina-alumina bonds prepared with pure aluminum interlayer. However some samples were also prepared with various aluminum-silicon alloys, pure copper and nickel plated copper interlayer. To broaden the application of the developed technique, samples prepared with nickel plated copper interlayer were also studied in some detail. The furnace was designed and fabricated in such a way that it was possible to apply an accurate load upto 30 MPa with the help of a lever mechanism. The temperature range employed during experimentation was 700-1150oC, while the holding time was varied from 15 to 240 minutes. The joints were tested for their flexural strength through four point bend test. Asjoined samples were studied through optical and scanning electron microscopy for integrity of the interface as well as changes in thickness of the interlayer. The selected fractured samples were studied through scanning electron microscopy to correlate the improvement in the strength with the changes in interface. It was observed that the application of the pressure during the brazing process greatly reduced the holding time as well as the processing temperature for a given joint strength. It was further observed that in the joints prepared under applied loads, it was possible to obtain joint strength which was many times higher than the maximum obtainable in samples prepared under comparable holding time, temperature and atmospheric conditions but with no applied load.