Thermal Spray Tritium Resistant Ceramic Coating

       Chinese traditional festival - the arrival of the Spring Festival has entered the countdown, just like Deng Ziqi's "Period", the full stop of 2020, and the beginning of 2021. Looking back on 2020, the most unexpected harvest is that the company's powder materials have entered the supply sequence of another national-level project. Although the whole company is relatively Buddhist, we will fully cooperate with customers who take the initiative to invest olive branches. After working with the customer for 8 months, our powder-prepared coating passed the acceptance.

The fragrance of wine is also afraid of the deep alley. We will briefly introduce the application of ceramic coatings in the field of nuclear power under the principle of not divulging customer secrets.

On March 11, 2011, a super earthquake measuring 9.0 on the Richter scale broke out in Japan, and the subsequent tsunami hit the Fukushima Daiichi nuclear power plant. In the end, the accident level of the Fukushima nuclear power plant was set as the highest level 7, and the only one comparable to the Fukushima accident was the famous Chernobyl accident. Japanese authorities have acknowledged that molten nuclear reactors have started to contaminate downwards and have already begun polluting groundwater. The rescue of the Fukushima nuclear power plant has always relied heavily on cooling water, a passive and palliative method. It can be seen that although the Fukushima nuclear power plant accident was caused by natural disasters, the continued deterioration of the accident was caused by the delay of the Japanese authorities. In 2020, the Japanese government decided to accept the proposal of a Japanese expert group to discharge tritium-containing sewage from the Fukushima nuclear power plant into the Pacific Ocean as a neighboring country to Japan. After the nuclear accident, South Korea has been prohibiting the import of seafood from the Fukushima region of Japan. And many anti-nuclear activists in Japan also oppose the discharge of this waste water into the ocean. They argue that even though tritium is less radioactive than strontium and cesium, it should be cleaned up. Japan's fisheries organization has repeatedly expressed concerns about the practice, arguing that it will destroy the local fishery. On March 26, the relevant person in charge of China's Ministry of Environmental Protection (National Nuclear Safety Administration) introduced that the environmental protection department has detected extremely high levels in aerosol samples at three monitoring points in Raohe County, Fuyuan County, and Hulin County, Heilongjiang Province. Trace amounts of the artificial radionuclide iodine-131.

The systems that store and discharge cooling water usually need to be treated with a tritium-blocking coating, but as an isotope of hydrogen, tritium has a strong reducibility, and it is easier to dissolve and penetrate in metal containers at high temperatures, bringing health benefits to workers. to threaten. Ceramic materials have very low hydrogen solubility, diffusivity and permeability, and are excellent tritium barrier materials, but due to their inherent brittleness, it is difficult to process into hydrogen storage and tritium containers. Therefore, we can use surface coating technology to prepare a suitable ceramic coating on the stainless steel surface to achieve the effect of preventing tritium penetration.

The article on this page is original, please inform us if you reprint it. If there is plagiarism, its shameful behavior will be cracked down.