TZM is a molybdenum alloy micro-alloyed with titanium, zirconium and carbon; a dispersed carbide phase pins the grain boundaries, giving it a recrystallization temperature and high-temperature creep resistance well above pure molybdenum, which suits long overhanging, heavily loaded electrode sections. This article explains the composition design logic, the key performance differences and the points to watch in machining and service.
Technical Encyclopedia
Technical reference on molybdenum electrode selection, installation practice, oxidation protection, failure analysis and replacement intervals for glass furnace, fiberglass tank and high-temperature melting engineers.
WeiBeam · Electrode solutions for high-temperature melting
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Recrystallization temperature is the key to understanding how molybdenum electrodes behave at high temperature. Pure molybdenum recrystallizes roughly between 1090 and 1350 °C, while the electrode working section usually stays above that range for long periods, which brings a fall in strength, grain growth and embrittlement. This article explains how this microstructural evolution affects electrode life and deformation, and gives material selection and operating responses.