Investigation of the PuU phase diagram

Okamoto, Yoshihiro; Maeda, Atsushi; Suzuki, Yuzuru; Ohmichi, Toshihiko

doi:10.1016/0925-8388(94)90935-0

Cited by 18 publications

(16 citation statements)

References 7 publications

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“…1 (Ellinger, Elliott & Cramer, 1959). This diagram has been generally confirmed in a recent study (Okamoto, Maeda, Suzuki & Ohmichi, 1994). Ellinger et al (Ellinger, Elliott & Cramer, 1959) studied the Xray diffraction of the intermediate phases in the Pu-U system.…”

Section: Introductionsupporting

confidence: 62%

Structure of ζ-phase plutonium–uranium

Lawson¹,

Goldstone²,

Cort³

et al. 1996

Acta Crystallogr Sect B

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The structure of the (-phase in the Pu-U system has been determined by neutron powder diffraction. The phase crystallizes in space group R3m with 58 atoms in the primitive unit cell and 10 atoms in the asymmetric unit. The structure is characterized by many short bonds and fits the general pattern of the light actinides. Thermal expansion and elastic data were obtained from the diffraction experiments.

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Section: Introductionsupporting

confidence: 62%

Structure of ζ-phase plutonium–uranium

Lawson¹,

Goldstone²,

Cort³

et al. 1996

Acta Crystallogr Sect B

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“…Next, for the Pu-U system ( Fig. 2c), in spite of the fact that the high-temperature part of the phase diagram is in good agreement with experimental data [14,15,16,17,18], the calculated eutectoid temperature among the ζ, η, and β-Pu phases disagree by ∼100 • C from the experimental value.…”

Section: Introductionsupporting

confidence: 68%

“…(Color online) Ab initio informed CALPHAD assessment of the Pu-U system[19]. The symbols (], , , , •) represent the experimental data taken from[14,15,16,17,18], respectively.…”

mentioning

confidence: 99%

The Pu–U–Am system: An ab initio informed CALPHAD thermodynamic study

Perron

Turchi

Landa

et al. 2015

Journal of Nuclear Materials

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Phase diagram and thermodynamic properties of the Am-U system, that are experimentally unknown, are calculated using the CALPHAD method with input from ab initio electronic-structure calculations for the fcc and bcc phases. A strong tendency toward phase separation across the whole composition range is predicted. In addition, ab initio informed Pu-U and Am-Pu thermodynamic assessments are combined to build a Pu-U-Am thermodynamic database. Regarding the Pu-rich corner of the ternary system, predictions indicate that Am acts as a powerful δ-Pu (fcc) stabilizer. In the U-rich corner, similar predictions are made but to a lesser extent. In both cases, the bcc phase is destabilized and the fcc phase is enhanced. Finally, results and methodology are discussed and compared with previous assessments and guidelines are provided for further experimental studies.

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“…The phase diagram in Fig. 4 included consideration of both additional phase diagram data [31] and thermodynamic data for Pu activities. The diagram reproduces the experimental data well; the largest discrepancy between this assessment and the experimental data is the position of g-phase and b-U.…”

Section: Plutonium-uraniummentioning

confidence: 99%

“…Potter / Journal of Nuclear Materials 389 (2009)[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] …”

mentioning

confidence: 99%