2022年9月1日 · Application of the volume averaging method to upscale deformation of UO 2 fuel pellet. Derivation of the upscaled model with single equation and three effective coefficients. …

2002年2月1日 · This paper mainly deals with the investigation of a relevant acoustic parameter: the attenuation. Indeed, the ultrasonic attenuation in UO 2 as a function of the operating …

2016年10月1日 · We found that the formation of porosity due to extended burnup decreases the thermal conductivity by 15%. Based on the existing low temperature high burnup gaseous …

2022年10月18日 · In line with these goals, in the present paper, the effect of the presence of grain boundaries (GBs) with misorientations (⁠ θ G B ⁠) of 36 ° ⁠, 39 ° ⁠, 52 ° ⁠, 53 ° ⁠, 71 ° ⁠, and 129 ° in …

To investigate this important phenomenon, a finite-element method is used to simulate the effect of 3-dimensional (3D) distributions of pores on the thermal transport in a nuclear fuel element …

High green density UO 2 powder compacts were annealed over a range of temperatures to establish the sintering mechanisms for open and closed porosity. During the intermediate …

A correlation for the volume porosity of irradiated UO 2 fuel as a sum of the individual contributions of the pore and swelling porosity in terms of the local density and fractional …

摘要 借助大型金相显微镜,对陶瓷UO2的孔隙率与孔隙分布金相定量测量进行研究。 研究结果表明:利用组合物镜 (100×,50×,20×,5×)测量陶瓷UO2的孔隙率与孔隙分布比利用单个物镜 (... 展开 …

The technology for manufacturing of UO2 sintered pellets with controlled porosity is relatively simple using pores former. UO2 sinterable powder is mixed with pores former and thereafter …

2006年8月19日 · Recent theories of the development of lenticular grain face bubble populations and interconnected grain edge pores in UO 2 during irradiation are described qualitatively.