Interionic Pair Potential, hard sphere diameter and entropy of mixing of NaCd compound forming binary molten alloys under the framework of Pseudopotential theory
Journal Title: JOURNAL OF ADVANCES IN CHEMISTRY - Year 2014, Vol 10, Issue 6
Abstract
The observed asymmetric behaviour of mixing of NaCd liquid alloys around equiatomic composition with smaller negative values for free energy of mixing at compound forming concentration, i.e. GMXS = -4.9KJ at Ccd =0.66 has aroused our interest to undertake a theoretical investigation of this system.A simple statistical mechanical theory based on compound formation model has been used to investigate the energetics of formation of intermetallic compound Cd2Na in the melt through the study of entropy of mixing.Besides, the interionic interactions between component atoms Na and Cd of the alloys have been understood through the study of interionic pair potential фij(r), calculated from pseudopotential theory in the light of CF model.Our study of фij(r) suggest that the effective interaction between Na-Na atoms decreases on alloying with Cd atom, being minimum for compound forming alloy( Cd 0.66 Na 0.34 ).The nearest neighbor distance between Na-Na atoms does not alter on alloying. Like wise Na-Na, effective interaction between Cd-Cd atom decreases from pure state to NaCd alloys, being smaller at compound forming concentration Cd 0.66 Na 0.34.The computed values of SM from pseudopotential theory are positive at all concentrations, but the agreement between theory and experimental is not satisfactory. This might be happening due to parameterisation of σ3 and Ψcompound.
Authors and Affiliations
Sujeet Kumar Chatterjee, Lokesh Chandra Prasad, Ajaya Bhattarai
Keywords
Related Articles
- EP ID EP652778
- DOI 10.24297/jac.v10i6.5513
- Views 149
- Downloads 0
AN EXPERIMENTAL STUDY ON THE PERFORMANCE OF VERTICAL BASIN SOLAR STILL
In the present study, a new experimental approach is proposed to enhance the performances of the conventional single slope solar still using vertical basin at inner wall surfaces. Main objectives of this study are, to in...
PROPERTIES FOR NONLINEAR SOIL STRUCTURE INTERACTION ANALYSIS FOR SHALLOW FOUNDATION
The formulation of a soil structure interaction problem begins with identifying the underlying design variables which are primarily varied during the analysis process. In design, construction and maintenance of any Engin...
AN EXPERIMENTAL INVESTIGATION OF THE EFFECT OF MASS FLOW RATES ON THE PERFORMANCE OF FLAT-PLATE SOLAR WATER HEATING SYSTEM USING CuO/WATER NANOFLUID
One of the effective ways of increasing the efficiency of flat plate solar collector is to utilize nanofluids which are having high thermal conductivity. In the present study, an attempt is made to investigate the effect...
INFLUENCE OF TWISTED TAPE INSERT ON OVERALL HEAT TRANSFER COEFFICIENT AND EFFECTIVENESS CHARACTERISTIC OF AUTOMOBILE RADIATOR
In this work, the overall heat transfer coefficient and the effectiveness of a circular tube automobile radiator with aluminium twisted tape insert having three different twist ratio (y = 8, 12, and 16) is investigated e...
The Present Status and Prospect of Research on Rapid Freeze-drying Food in China
The basic principles, process, features, technology advances, mechanistic modelling of the phenomena involved and present status of freeze-dried food were introduced in this paper, in which the main problems of the freez...