Stability of ternary oxygen compounds of molybdenum in liquid sodium

Gnanasekaran, T. ; Mahendran, K. H. ; Periaswami, G. ; Mathews, C. K. ; Borgstedt, H. U. (1987) Stability of ternary oxygen compounds of molybdenum in liquid sodium Journal of Nuclear Materials, 150 (2). pp. 113-127. ISSN 0022-3115

Full text not available from this repository.

Official URL:

Related URL:


The ternary system Na-Mo-O is of interest in sodium loops such as in the heat transport systems of LMFBRs. This paper reports the results of our investigations with a view to identifying the phases which could co-exist with liquid sodium and molybdenum. The limited number of studies reported in literature are first critically reviewed and shown to be inconsistent. Experiments involving in-sodium equilibrations, solid state reactions and pseudo-isopiestic equilibrations were carried out to understand the phase relations in the Na-Mo-O system. In addition to the above, oxygen potentials were measured in sodium to which molybdates of sodium were added, using a galvanic cell. From these results it could be deduced that Na2O(s) coexists with molybdenum and liquid sodium metal up to 681.1 K. Above this temperature the ternary oxygen compound, Na4MoO5(s) appears as the coexisting phase with the two metals. From the oxygen potential data, the Gibbs energy of formation of Na4MoO5(s) could be deduced.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:25447
Deposited On:06 Dec 2010 13:23
Last Modified:06 Jun 2011 11:54

Repository Staff Only: item control page