High-performance construction materials reduce the energy consumption and increase the life of large vacuum-furnace hot zones.
The incorporation of high-performance materials in place of traditional pure molybdenum refractory metal of choice greatly improves the performance and longevity of large vacuum furnace hot zones. Hearth components tend to remain straight and true, heating elements resist sagging and distortion, radiation shielding is less likely to break and gas-cooling nozzles typically maintain their shape and last the life of the hot zone. Improved performance stems not only from fundamentally solid mechanical design, but also from dramatic improvements in the properties of the high performance materials of construction. Alloyed and doped molybdenum outperforms pure molybdenum in high-temperature vacuum-furnace applications. In addition, Plansee Ag.'s (Reutte, Austria) blackbody radiation heating elements offer significant electrical energy savings over conventional designs.