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Grain Size Tuning for Radiation Resistance

United States Patent Application

20170002456
A1
View the Complete Application at the US Patent & Trademark Office
A process for producing a radiation resistant nanocrystalline material having a polycrystalline microstructure from a starting material selected from metals and metal alloys. The process including depositing the starting material by physical vapor deposition onto a substrate that is maintained at a substrate temperature from about room temperature to about 850.degree. C. to produce the nanocrystalline material. The process may also include heating the nanocrystalline material to a temperature of from about 450.degree. C. to about 800.degree. C. at a rate of temperature increase of from about 2.degree. C./minute to about 30.degree. C./minute; and maintaining the nanocrystalline material at the temperature of from about 450.degree. C. to about 800.degree. C. for a period from about 5 minutes to about 35 minutes. The nanocrystalline materials produced by the above process are also described. The nanocrystalline materials produced by the process are resistant to radiation damage.
Taheri, Mitra Lenore (Philadelphia, PA), Vetterick, Greg (Seattle, WA)
Drexel University (Philadelphia PA)
15/ 102,425
December 22, 2014
[0002] This invention was made with government support under Grant No. DE-SC0008274.df awarded by the Department of Energy Basic Energy Sciences. The government has certain rights in the invention.