scholarly journals Structure of Ni-P Melts by X-Ray Diffraction

1997 ◽  
Vol 52 (3) ◽  
pp. 284-288
Author(s):  
B. Sedelmeyer ◽  
S. Steeb
Keyword(s):  
Correlation Function ◽  
Coordination Number ◽  
Structure Factor ◽  
Pair Correlation Function ◽  
Pair Correlation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Two Peaks ◽  
Second Peak

Abstract X-ray diffraction was done with molten Ni81 P19 (930°C) and with molten Ni68.8 P31.2 (1160°C). The second peak of the structure factor and the pair correlation function of the Ni81P19 -melt shows a shoulder, as was observed for amorphous Ni80P20 . The first two peaks in the pair correlation function can be modelled using crystalline Ni3 P besides molten Ni. In the case of Ni68.8P31.2 , the first peak in the pair correlation function was modelled using the distance and coordination number as in crystalline Ni2P.

Structure of Fe-Si-melts by X-ray Diffraction

1997 ◽  
Vol 52 (5) ◽  
pp. 415-419
Author(s):  
B. Sedelmeyer ◽  
S. Steeb
Keyword(s):  
Correlation Function ◽  
Pair Correlation Function ◽  
Pair Correlation ◽  
Molten Alloy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coordination Numbers ◽  
Crystalline Alloy ◽  
Connection Line

Abstract X-ray diffraction was done with molten Fe66,7 Si33,3 and molten Fe33,3 Si66,7 . The coordination numbers versus the concentration lie above the connection line between the coordination numbers of the unalloyed molten elements Fe and Si, respectively, which means a tendency for microsegregation. The pair correlation function of molten Fe66,7 Si33,3 was modeled using the data of crystalline Fe2 Si. At the same time, the pair correlation function of the molten alloy Fe33,3 Si66,7 can be modeled using the data of the corresponding crystalline alloy. Thus for molten Fe33,3 Si66,7 microsegregation into FeSi2 and Si or FeSi and for molten Fe66,7 Si33,3 microsegregation into Fe2 Si and Fe or FeSi exists.

Untersuchung von Fe90B10-und Fe83B17-Schmelzen mittels Röntgen-Beugung/ X-Ray investigation with Fe90B10- and Fe83B17-melts

1983 ◽  
Vol 38 (3) ◽  
pp. 325-328
Author(s):  
Ernst Noid ◽  
Georg Rainer-Harbach ◽  
Peter Lamparter ◽  
Siegfried Steeb
Keyword(s):  
Correlation Function ◽  
Large Deviations ◽  
Pair Correlation Function ◽  
Pair Correlation ◽  
X Ray Diffraction ◽  
Intensity Curve ◽  
Interatomic Distances ◽  
X Ray ◽  
Coordination Numbers

Abstract By means of X-ray diffraction the two molten alloys Fe90B10 and Fe83B17 were investigated. The second maximum of the intensity curve shows in both cases a small shoulder which up to now never was observed with binary melts. The interatomic distances and the coordination numbers were evaluated. The normalized atomic distances taken from the pair correlation function of amorphous Fe80B20 agree well with those reported in literature for a tetrahedral model, whereas the normalized distances obtained with the two melts show rather large deviations from this model.

X-Ray Investigations on Molten Cu-Sb Alloys

1994 ◽  
Vol 49 (4-5) ◽  
pp. 530-534 ◽  
Author(s):  
Th. Halm ◽  
H. Neumann ◽  
W. Hoyer
Keyword(s):  
Electronic Properties ◽  
Structure Factor ◽  
Correlation Functions ◽  
Pair Correlation ◽  
Model Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure Factors ◽  
Diffraction Structure ◽  
Eutectic Concentration

Abstract Using X-ray diffraction, structure factors and pair correlation functions of several molten Cu-Sb alloys and pure antimony were determined and compared with published structural, thermodynamic and electronic properties. The eutectic concentration Cu37Sb63 was investigated in dependence on temperature, and a model structure factor was calculated applying a segregation model.

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