New insight into δ-Pu alloy oxidation kinetics highlighted by using in-situ X-ray diffraction coupled with an original Rietveld refinement method

被引：24

作者：

Ravat, B. ^{[1
]}

Jolly, L. ^{[1
]}

Oudot, B. ^{[1
]}

Fabas, A. ^{[2
]}

Guerault, H. ^{[3
]}

Popa, I. ^{[2
]}

Delaunay, F. ^{[1
]}

机构：

[1] CEA, Ctr Valduc, F-21120 Is Sur Tille, France

[2] Univ Bourgogne, CNRS, UMR 6303, ICB, 9 Ave Savory, F-21078 Dijon, France

[3] Bruker AXS, Ostliche Rheinbrackenstr 49, D-76187 Karlsruhe, Germany

来源：

CORROSION SCIENCE | 2018年 / 138卷

关键词：

Alloy; X-ray diffraction; Oxidation; High temperature corrosion; HIGH-TEMPERATURE OXIDATION; 1 AT.PERCENT ALLOY; DFT PLUS U; PHASE-TRANSFORMATIONS; CRYSTAL STRUCTURE; PLUTONIUM; BETA; GA; LAYERS; ALPHA;

D O I：

10.1016/j.corsci.2018.03.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The reactivity of a delta-Pu alloy was studies under dry oxygen at different temperatures. Phase analysis has shown the presence of alpha-and beta-Pu2O3, PuO2, as well as the destabilisation of the delta-phase. The oxidation kinetics were studied using in-situ X-ray diffraction cm pled with an original method of Rietveld refinement enabling an individual monitoring of the growth of each oxide. The results have evidenced a parabolic stage resulting from the thickening of the alpha-Pu2O3 layer, in which a compressive stress state develops. This stage is followed by the linear growth of a porous PuO2 scale.

引用

页码：66 / 74

页数：9

共 58 条

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