Non-toxic and environmentally-friendly tungsten heavy alloy is an ideal anti-radiation material for applying in the field of medical shielding. Tungsten heavy alloy is a ternary alloy composed of 90-98% W and a small amount of Ni, Fe or Cu. There are mainly two series of tungsten heavy alloys including W-Ni-Fe alloy and W-Ni-Cu alloy.
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In recent years, radiation therapy has become a more commonly used treatment method. The radioactive medical equipment such as the Co 60 treatment machine and linear accelerator have been widely used in hospitals. In order to achieve complete and reliable protection conditions, the key parts of the equipment and the organs that the patient does not need to be irradiated must use anti-radiation shields of various shapes, such as anti-radiation storage tanks and anti-radiation plates for radioactive sources. Tungsten heavy alloy is widely used in the preparation of storage tanks, anti-radiation plates and other medical shields as it has reliable anti-radiation performance and smaller volume than lead. Also, it is non-toxic without polluting environment, and easy processing into shields of various shapes.
