Rare earth mixed dicarbides

Mixed rare earth dicarbides (Ri- R4)C2 with different structures 99... 

In the mixed rare earth dicarbide and the rare-earth-actinide carbide systems, the ternary compounds were found to be present in the form of a solid solution with the same structure as the component carbide. Thus, these carbides have also been called pseudobinary carbides. 

As described above, the mixed rare earth dicarbides were found to form in three different structures, bet, fee and hexagonal (Adachi et al. 1973). With respect to the... 

As in the mixed rare earth dicarbide systems, the rare earth dicarbides also form a solid solution with uranium dicarbide and there exists a composition dependence of the cubic-to-tetragonal phase transformation for the UC2-LaC2 or the UC2 CeC2 solid solutions (McColm et al. 1972), as well as for the UC2-GdC2 solid solution (Wallace et al. 1964). 

Superconductivity of the rare earth dicarbides and mixed dicarbides... 

The thermodynamic study of rare earth dicarbide systems is essential in rmderstanding the chemical state of fission products in the mixed carbide fuels used in fast breeder reactors. Thermodynamic properties of one such carbide, lanthanum dicarbide (LaC2) in the temperature range 1263-1543 K have been determined by using the new method referred to above. 

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