Plutonium tetraaluminium

Plutonium tetraaluminium
Plutonium tetraaluminium
Are common
Systematic ; name	Plutonium tetraaluminium
Traditional names	Plutonium aluminide
Chem. formula	Al 4 pu
Rat formula	PuAl 4
Physical properties
condition	crystals
Molar mass	351.93 g / mol
Density	6.1 g / cm³
Thermal properties
T. decomp.	925 ° C
Enthalpy of Education	-36 kJ / mol

Plutonium tetraaluminium is a binary inorganic compound of plutonium and aluminum with the formula Al ₄ Pu, crystals.

Content

Getting

Fusion of stoichiometric amounts of pure substances:

{\mathsf {Pu+4Al\ {\xrightarrow {925^{o}C}}\ Al_{4}Pu}}

{\ displaystyle {\ mathsf {Pu + 4Al \ {\ xrightarrow {925 ^ {o} C}} \ Al_ {4} Pu}}}

Physical Properties

Plutonium tetraaluminium forms crystals of rhombic syngony , space group I mma , cell parameters a = 0.4396 nm, b = 0.6266 nm, c = 1.3708 nm, Z = 4, structure type Al ₄ U ^[2] .

At a temperature of 645 ° C, a phase transition occurs in the structure.

The compound is formed by the peritectic reaction ^[3] at a temperature of 925 ° C. Plutonium tetraaluminium is depleted in plutonium and the actual composition of the compound Al ₄ Pu is _0.9–0.95 .

Al ₄ Pu and Al form a eutectic with a melting point of 650 ° C and a composition of 1.57 at.% Plutonium ^[4] .

Chemical Properties

Decomposes on heating:

{\mathsf {Al_{4}Pu\ {\xrightarrow {>925^{o}C}}\ Al_{3}Pu+Al}}

{\ displaystyle {\ mathsf {Al_ {4} Pu \ {\ xrightarrow {> 925 ^ {o} C}} \ Al_ {3} Pu + Al}}}

Application

Plutonium tetraaluminium, as a component of alloys, is used in nuclear thermal neutron reactors ^[5] .

Notes

↑ Patrice EA Turchi, Larry Kaufman, Zi-Kui Liu, Shihuai Zhou. Thermodynamics and Kinetics of Phase Transformations in Plutonium Alloys - Part I. - UCRL-TR-206658, 2004.
↑ OJC Runnalls. The Crystal Structures of Some Intermetallic Compounds of Plutonium // Canadian Journal of Chemistry. - 2011. - T. 34 , No. 2 . - S. 133-145 . - DOI : 10.1139 / v56-017 .
↑ State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Mechanical Engineering, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .
↑ PR Roy. Determination of α-aluminum solid solubility limits in the aluminum-uranium and aluminum-plutonium systems // Journal of Nuclear Materials. - 1964. - T. 11 , No. 1 . - S. 59-66 . - DOI : 10.1016 / 0022-3115 (64) 90121-7 .
↑ Beckman I.N. Plutonium. Study guide . - M: Moscow State University. M.V. Lomonosova, 2010 .-- 165 p. Archived February 23, 2015. Archived February 23, 2015 on Wayback Machine

[1] Patrice EA Turchi, Larry Kaufman, Zi-Kui Liu, Shihuai Zhou. Thermodynamics and Kinetics of Phase Transformations in Plutonium Alloys - Part I. - UCRL-TR-206658, 2004.

[2] OJC Runnalls. The Crystal Structures of Some Intermetallic Compounds of Plutonium // Canadian Journal of Chemistry. - 2011. - T. 34 , No. 2 . - S. 133-145 . - DOI : 10.1139 / v56-017 .

[Лякишева-3] State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Mechanical Engineering, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .

[4] PR Roy. Determination of α-aluminum solid solubility limits in the aluminum-uranium and aluminum-plutonium systems // Journal of Nuclear Materials. - 1964. - T. 11 , No. 1 . - S. 59-66 . - DOI : 10.1016 / 0022-3115 (64) 90121-7 .

[5] Beckman I.N. Plutonium. Study guide . - M: Moscow State University. M.V. Lomonosova, 2010 .-- 165 p. Archived February 23, 2015. Archived February 23, 2015 on Wayback Machine

Plutonium tetraaluminium
Are common
Systematic name	Plutonium tetraaluminium
Traditional names	Plutonium aluminide
Chem. formula	Al ₄ pu
Rat formula	PuAl ₄
Physical properties
condition	crystals
Molar mass	351.93 g / mol
Density	6.1 g / cm³
Thermal properties
T. decomp.	925 ° C
Enthalpy of Education	-36 ^[1] kJ / mol