X-rays (MoKα) have been used as a radiation probe to evaluate the interference functions I(K) (or structure factors) of liquid Cu, Mg and Cu-Mg alloys with 49, 66, and 86 at. % Mg at temperatures about 50°C above the liquidus. Employing the transmission technique, I(K) has been determined in the range of K = 4π sin Θ/λ between 0.8 A-1 and 12.5 A-1. All I(K) of the alloys exhibit a premaximum at K = 1.5 A-1.The partial interference functions Iij(K) have been determined, and it was found that the assumption of concentration independence of Iij(K) yielded reduced partial distribution functions Gij(r), the weighted sum of which were only in fair agreement with G(r), the Fourier transform of F(K) = K[I(K)-1].The positions, r, of the first peak in G(r) and the coordination number, η, determined from the radial distribution function 4π r2 ρ(r) = r G(r) + 4πr2 ρo, where ρo is the average atomic density of the alloy, show a negative deviation from a straight line when plotted as a function of concentration, which might be considered as evidence for the existence of short-range order in the liquid. Art. 2288
Model for Energy Allocation in Heating Systems with Partial Distribution of Heat Allocators
