This paper presents an account of the mechanical design and the fabrication development required to produce the functional nozzle segment of a gas turbine generator operated with coal-derived fuels at a firing temperature of 2600°F (1426°C). The nozzle is water cooled by a closed loop system. It is constructed of a composite of materials which have been totally diffusion bonded by means of the Hot Isostatic Pressing (HIP) process. Several segments have been made. These segments will be tested late in 1980.

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