公开(公告)号：US11551822B2

公开(公告)日：2023-01-10

申请号：US17473433

申请日：2021-09-13

Applicant: Westinghouse Electric Company LLC

Inventor： Edward J. Lahoda ,  Peng Xu ,  Robert L. Oelrich, Jr. ,  Hemant Shah ,  Jonathan Wright ,  Lu Cai

IPC: G21C3/62 ,  G21C3/04 ,  G21C3/22 ,  G21C21/12 ,  G21C3/20

Abstract: A method of forming a water resistant boundary on a fissile material for use in a water cooled nuclear reactor is described. The method comprises mixing a powdered fissile material selected from the group consisting of UN and U3Si2 with an additive selected from oxidation resistant materials having a melting or softening point lower than the sintering temperature of the fissile material, pressing the mixed fissile and additive materials into a pellet, sintering the pellet to a temperature greater than the melting point of the additive. Alternatively, if the melting point of the oxidation resistant particles is greater than the sintering temperature of UN or U3Si2, then the oxidation resistant particles can have a particle size distribution less than that of the UN or U3Si2.

公开(公告)号：US11145425B2

公开(公告)日：2021-10-12

申请号：US16260889

申请日：2019-01-29

Applicant: WESTINGHOUSE ELECTRIC COMPANY LLC

Inventor： Edward J. Lahoda ,  Peng Xu ,  Robert L. Oelrich, Jr. ,  Hemant Shah ,  Jonathan Wright ,  Lu Cai

IPC: G21C3/62 ,  G21C21/12 ,  G21C3/04 ,  G21C3/22

Abstract: A method of forming a water resistant boundary on a fissile material for use in a water cooled nuclear reactor is described. The method comprises mixing a powdered fissile material selected from the group consisting of UN and U3Si2 with an additive selected from oxidation resistant materials having a melting or softening point lower than the sintering temperature of the fissile material, pressing the mixed fissile and additive materials into a pellet, sintering the pellet to a temperature greater than the melting point of the additive. Alternatively, if the melting point of the oxidation resistant particles is greater than the sintering temperature of UN or U3Si2, then the oxidation resistant particles can have a particle size distribution less than that of the UN or U3Si2.