MIT: Carbon Nanotubes Prevent Radiation Damage to Metals
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Research at the Massachusetts Institute of Technology may cause nuclear reactor components to better withstand harsh radiation effects. An international research team led by scientists at the Massachusetts Institute of Technology found that adding a small amount of carbon nanotubes to metals can make them resistant to radiation-induced damage. Although this theory is currently justified in low-temperature metals such as aluminum, the research team stated that nanotubes can slow down the decomposition process of metals due to radiation, and can improve the operational life of nuclear reactors for research and commercial use.
The research team stated that in nuclear reactors, metal parts are constantly subjected to strong radiation, making the metal fragile and porous, easily causing breakdown of parts and components, which will affect the safety and economy of reactors. Therefore, scientists and engineers attach great importance to it. Metal anti-radiation research.
The problem now is that metal atoms change and split under the continuous bombardment of radioactive particles, which leads to tiny bubbles of helium gas, eventually causing the metal to bend along the grain direction. Eventually, the metal becomes porous and brittle.
The MIT team found that adding less than 2% by volume of carbon nanotubes to the metal manufacturing process makes the metal more resistant to radiation. If the carbon nanotubes are evenly distributed, a permeable one-dimensional transmission channel will be generated inside the metal, and the tiny helium gas bubbles that are continuously bombarded by radioactive particles can be discharged in time to avoid damage to the metal.
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