Linear thermal expansion, thermal diffusivity and melting temperature of Am-MOX and Np-MOX

Linear thermal expansion, thermal diffusivity and melting temperature of Am-MOX and Np-MOX

•The thermal properties of Np- and Am-MOX solid solutions were investigated.•Np- and Am-MOX solid solutions exhibit the same linear thermal expansion.•The thermal conductivity of Am-MOX is about 10% higher than that of Np-MOX.•The melting temperatures of Np-MOX and Am-MOX are 3020±30K and 3005±30K,...

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Veröffentlicht in:Journal of alloys and compounds 2015-07, Vol.637, p.326-331
Hauptverfasser: Prieur, D., Belin, R.C., Manara, D., Staicu, D., Richaud, J.-C., Vigier, J.-F., Scheinost, A.C., Somers, J., Martin, P.
Format: Artikel
Sprache:eng
Schlagworte:
Alloys
Americium
Diffraction
Lasers
Linear thermal expansion
Melting
Melting temperature
MOX
Neptunium
Solid solutions
Thermal conductivity
Thermal expansion
Thermal properties
X-rays
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Zusammenfassung:•The thermal properties of Np- and Am-MOX solid solutions were investigated.•Np- and Am-MOX solid solutions exhibit the same linear thermal expansion.•The thermal conductivity of Am-MOX is about 10% higher than that of Np-MOX.•The melting temperatures of Np-MOX and Am-MOX are 3020±30K and 3005±30K, respectively. The thermal properties of Np- and Am-MOX solid solution materials were investigated. Their linear thermal expansion, determined using high temperature X-ray diffraction from room temperature to 1973K showed no significant difference between the Np and the Am doped MOX. The thermal conductivity of the Am-MOX is about 10% higher than that of Np-MOX. The melting temperatures of Np-MOX and Am-MOX, measured using a laser heating self crucible arrangement were 3020±30K and 3005±30K, respectively.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2015.03.032