| abstract |
The invention discloses a fluorite structure dysprosium titanate reactor control rod and a preparation method thereof. The preparation method is as follows: using molybdenum oxide as a stabilizer, calcining dysprosium oxide, titanium dioxide and molybdenum oxide powder to obtain fluorite structure titanic acid Dysprosium powder, the fluorite structure dysprosium titanate powder is made into a green body, and the green body is sintered to obtain a fluorite structure dysprosium titanate ceramic; wherein, the sintering temperature is higher than the calcination temperature, and the obtained fluorite structure dysprosium titanate ceramic Processed into control drum and safety rod assemblies, and assembled with cladding to obtain reactor control rods of fluorite structure dysprosium titanate. The fluorite structure dysprosium titanate reactor control rod prepared by the invention mainly exists in the crystal form of the fluorite structure, and the problem of irradiation cracking does not occur. |