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Static and rotating anodes in X-ray tubes (W and W-Re). For high performance tubes W-Re is preferred. These anodes are used in modern medical technology (e.g.,computerized tomographic scanning equipment). Only the surface layer consists of W/3-10Re while the support body can be a Mo-Ti-Zr-C micro alloy, called TZM, or graphite. The W-Re layer can be produced either by powder metallurgical techniques or by CVD. Compared to pure tungsten, which was employed in former times, the W-Re alloy allows higher electron currents yielding in shorter irradiation times. The important property is the increased stability to extreme alternating thermal stresses. Roughening of the heating zone is much retarded in comparison to W, hence increasing the lifetime of the tube.
Directly heated cathodes in X-ray tubes (W)
Components for X-ray and radiation shielding (W, HM, HM-polymer). Typical examples are containers or flasks for radioactive materials and liquids, shielded syringes, shielding construction parts such as collimators in computer tomographic scanners, radiation therapy instruments, and containers and shielding for oil prospecting using radioactive sources.
Infrared reflector lamps (NS-W) used in medicine and health promotion (for example, treatment of hyperbilirubinaemia in a baby).
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