A relation between X-ray diffraction based liquid structure and packing coefficient

Pramana ◽  
1990 ◽  
Vol 34 (3) ◽  
pp. 193-199 ◽  
Author(s):  
A Mikusinska-Planner
Keyword(s):  
Liquid Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Packing Coefficient

scholarly journals High-Energy X-ray Diffraction Study of Liquid Structure of Metallic Glass-Forming Zr70Cu30 Alloy

2005 ◽  
Vol 46 (12) ◽  
pp. 2799-2802 ◽  
Author(s):  
Akitoshi Mizuno ◽  
Seiichi Matsumura ◽  
Masahito Watanabe ◽  
Shinji Kohara ◽  
Masaki Takata
Keyword(s):  
Metallic Glass ◽  
Diffraction Study ◽  
Liquid Structure ◽  
High Energy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Glass Forming

Melt Temperature Dependence on Glass Forming Ability of Al-Mg Alloys

2009 ◽  
Vol 79-82 ◽  
pp. 191-194
Author(s):  
Hao Ran Geng ◽  
Yan Bo Deng ◽  
Zhi Ming Wang ◽  
Xue Liang Wang ◽  
Zhen Yuan Li
Keyword(s):  
Melt Spinning ◽  
Liquid Structure ◽  
Glass Forming Ability ◽  
Dsc Analysis ◽  
X Ray Diffraction ◽  
Melt Temperature ◽  
X Ray ◽  
Glass Forming ◽  
The Relationship ◽  
Al Mg Alloys

The relationship between the viscosity of Al84Mg10Ce6 alloy melt and liquid structure was studied by viscosity measurements, X-ray diffraction and DSC analysis in this paper. In addition, the glass forming ability of alloy ties produced by melt spinning was analyzed. Based on the above results, the relationship between alloy melts and its glass forming ability(GFA)was studied. The addition of element Ce leads to the abnormal change of Al84Mg10Ce6 melt’ s structure and enhances its GFA, furthermore, it results in completely amorphous ties with melt spinning at 850°C.Therefore, there is certain relationship between the Al-Mg based alloys melt and its GFA.

Structure of Zr-Cu and Zr-Ni Liquid Alloys Studied by High-Energy X-Ray Diffraction

2007 ◽  
Vol 561-565 ◽  
pp. 1349-1352 ◽  
Author(s):  
Akitoshi Mizuno ◽  
T. Kaneko ◽  
Seiichi Matsumura ◽  
Masahito Watanabe ◽  
Shinji Kohara ◽  
...  
Keyword(s):  
Liquid Structure ◽  
High Energy ◽  
Glass Forming Ability ◽  
Liquid Alloys ◽  
X Ray Diffraction ◽  
X Ray ◽  
Glass Forming ◽  
Structure Factors ◽  
Asymmetric Shape ◽  
Second Peak

In order to obtain an insight into the high glass-forming ability of bulk metallic glasses, we have analyzed liquid structures of the Zr-Cu and the Zr-Ni binary alloys with different compositions. High-energy (E = 113 keV) x-ray diffraction experiments were carried out for the liquid alloys levitated by a conical nozzle levitation (CNL) technique. While a peculiar shoulder on the second peak was observed in the structure factors of the Zr-Cu liquid alloys, those of the Zr70Ni30 and the Zr50Ni50 liquids exhibit an asymmetric shape of the second peak. In addition, it was found that the effect of concentration variation in the liquid Zr-Ni alloys was significantly different from that of the liquid Zr-Cu alloys. The liquid structure analyses using the reverse Monte Carlo (RMC) simulation have clarified that a degree of the short-range correlation between the constituents in the liquids affects substantially the glass-forming ability of the binary Zr alloys.

Structure Evolution of Au50Cu50 Alloy from Melt to the Disordered Solid Solution

2020 ◽  
Vol 993 ◽  
pp. 273-280
Author(s):  
Yan Wen Bai ◽  
Xiao Lin Zhao ◽  
Xiu Fang Bian ◽  
Kai Kai Song ◽  
Yan Zhao
Keyword(s):  
Solid Solution ◽  
Monte Carlo ◽  
Local Structure ◽  
Solution Structure ◽  
Liquid Structure ◽  
Structure Evolution ◽  
Reverse Monte Carlo ◽  
Diffraction Experiment ◽  
X Ray Diffraction ◽  
X Ray

The liquid local structure of Au50Cu50 solid solution was detected by high-temperature X-ray diffraction experiment and Reverse Monte Carlo (RMC) simulation. The clusters in the liquid Au50Cu50 alloy comprise the 12-coordinated polyhedron with Au center, which was the same as the clusters in the liquid pure Au. In the case of alloying, there was a high population of Au-Au bonds, and the local structure around Cu atoms was changed. In the case of solidification, the 12-coordinated clusters around Au atoms were preserved into the AuCu alloy, forming the disordered solid solution structure. The strong tendency for Cu-Cu bonds was weakened from 2.35 Å in the liquid to 2.81 Å in the solid solution, and the local structure around Cu atoms rearranges. It is shown that the liquid structure of the Au50Cu50 alloy plays a crucial role in the solid solution. Our findings elucidate that the disordered solid solution structure in AuCu alloy stems from the highly dominated 12-coordinated clusters associated with centered Au atom in the melt.

Intramolecular and liquid structure of 2,2,2-trifluoroethanol by X-ray diffraction

1989 ◽  
Vol 18 (8) ◽  
pp. 771-784 ◽  
Author(s):  
T. Radnai ◽  
S. Ishiguro ◽  
H. Ohtaki
Keyword(s):  
Liquid Structure ◽  
X Ray Diffraction ◽  
X Ray

The Correlation between the Liquid Structure and the Viscosity of Sn-Cu Lead-Free Solders

2010 ◽  
Vol 97-101 ◽  
pp. 679-682
Author(s):  
Xue Min Pan ◽  
Ning Zhao ◽  
Rui Fang Ding ◽  
Guang Lin Wei ◽  
Lai Wang
Keyword(s):  
Solder Matrix ◽  
Torsional Oscillation ◽  
Diffraction Method ◽  
Phase Evolution ◽  
Liquid Structure ◽  
Testing Temperature ◽  
Lead Free ◽  
Main Peak ◽  
X Ray Diffraction ◽  
X Ray

The liquid structure of two lead-free solder Molten alloys, Sn-0.5Cu and Sn-1.8Cu (wt.%), has been examined using X-ray diffraction method. The main peak for liquid structure of Sn-0.5Cu is similar to that of pure Sn. A pre-peak has been found in the low Q part on the structure factor S(Q) of Sn-1.8Cu tested under 320°C, but it disappeared finally when the testing temperature reached 350°C. The both viscosity was measured using a torsional oscillation viscometer. It was found that the anomalous variations of viscosity had a direct relation with the transition of the liquid structure, which is consonant with the results of high temperature X-ray diffraction. The microstructure of the solder matrixes as well as interfacial reaction between liquid solders and Cu substrates was also studied. The results show that particle-like Cu6Sn5 intermetallic compounds (IMCs) emerge in Sn-1.8Cu solder matrix. The IMC layer at Sn-1.8Cu/Cu joint is thicker than that at Sn-0.5Cu/Cu interface. The correlative effect of liquid structure on phase evolution in the solder joints is analyzed.

scholarly journals Melting Curve and Liquid Structure of Nitrogen Probed by X-ray Diffraction to 120 GPa

2017 ◽  
Vol 119 (23) ◽  
Author(s):  
Gunnar Weck ◽  
Frédéric Datchi ◽  
Gaston Garbarino ◽  
Sandra Ninet ◽  
Jean-Antoine Queyroux ◽  
...  
Keyword(s):  
Melting Curve ◽  
Liquid Structure ◽  
X Ray Diffraction ◽  
X Ray
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