Why Use Tungsten Alloy Shielding

Along with widely using of radiation in medical, industrial, scientific communications, food, medicine and other fields, radiation hazards and how to achieve radiation protection also attract people's attentions. In physics, radiation is the emission or transmission of energy in the form of waves or particles（such as alpha particles, beta articles）through space or through a material medium. It is generally divided into ionizing radiation and non-ionizing radiation depending upon the energy of the radiated particles. Ionizing radiation (including α, β and γ radiation) has enough high-energy radiation to ionizing atoms, while the energy of non-ionizing radiation is lower than that of ionizing radiation, which can't ionize substances. In the medical field, radiation may be used to diagnose and treat diseases, such as physicians can use X-rays to find broken bones and locate cancer grow in vivo; in the field of science, radioactive atom is used as tracer; and in modern communication systems the form of radiation is mainly electromagnetic radiation.

With the increasing use of radiation in our lives, its harm cannot be neglected any longer. Most electronic devices have electromagnetic radiation that have a great harm on human health. For example, long-term irradiation during pregnancy will cause fetal malformations. Long-term exposure to radiation also can also make human body discomfort, resulting in human organs and system damage, lead to leukemia, cancer, eye diseases, reproductive system damage, aplastic anemia and other diseases. Therefore, the radiation protection is a must. Radiation protection can be reached by putting a shielding between humans and the radiation source or around the radiation source in order to achieve the effect of weakening the intensity of radiation to avoid human suffering from radiation damage. Common shield material are lead shielding, tungsten alloy shielding, depleted uranium, of which tungsten alloy is the best radiation shielding material.

Tungsten alloy is a tungsten-based alloy that adds other elements. It is found naturally on Earth almost exclusively in chemical compounds. It has the highest melting point of all the elements and also has strength at high temperature, high creep resistance and good thermal conductivity and electron emission performance. Compared with other shielding materials, tungsten has a higher density, while the radiation shielding performance of a metal material is closely related to its density, the higher the density is, the better the shielding performance is, and therefore tungsten alloy shielding has a good radiation shielding effectiveness. In addition, tungsten alloy shielding is a non-toxic, environmental protection and friendly shielding metal alloy shielding, neither pollute the environment, nor endanger human health. 

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