Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Electrostatic levitation facility optimized for neutron diffraction studies of high temperature liquids at a spallation neutron source

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4939194· OSTI ID:22482826
 [1];  [2]; ;  [3]; ; ;  [4];  [4];  [5]; ;  [6];  [7];  [5]
  1. Instrument and Source Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
  2. Mechanical Engineering and Materials Science, Washington University, St. Louis, Missouri 63130 (United States)
  3. Department of Physics and Institute of Materials Science and Engineering, Washington University, 1 Brookings Drive, St. Louis, Missouri 63130 (United States)
  4. Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
  5. Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States)
  6. Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
  7. Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Ave., Kowloon (Hong Kong)
Neutron diffraction studies of metallic liquids provide valuable information about inherent topological and chemical ordering on multiple length scales as well as insight into dynamical processes at the level of a few atoms. However, there exist very few facilities in the world that allow such studies to be made of reactive metallic liquids in a containerless environment, and these are designed for use at reactor-based neutron sources. We present an electrostatic levitation facility, NESL (for Neutron ElectroStatic Levitator), which takes advantage of the enhanced capabilities and increased neutron flux available at spallation neutron sources (SNSs). NESL enables high quality elastic and inelastic neutron scattering experiments to be made of reactive metallic and other liquids in the equilibrium and supercooled temperature regime. The apparatus is comprised of a high vacuum chamber, external and internal neutron collimation optics, and a sample exchange mechanism that allows up to 30 samples to be processed between chamber openings. Two heating lasers allow excellent sample temperature homogeneity, even for samples approaching 500 mg, and an automated temperature control system allows isothermal measurements to be conducted for times approaching 2 h in the liquid state, with variations in the average sample temperature of less than 0.5%. To demonstrate the capabilities of the facility for elastic scattering studies of liquids, a high quality total structure factor for Zr{sub 64}Ni{sub 36} measured slightly above the liquidus temperature is presented from experiments conducted on the nanoscale-ordered materials diffractometer (NOMAD) beam line at the SNS after only 30 min of acquisition time for a small sample (∼100 mg)
OSTI ID:
22482826
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 87; ISSN 0034-6748; ISSN RSINAK
Country of Publication:
United States
Language:
English

References (32)

Thermal Evaporation Loss Measurements on Quasicrystal (Ti–Zr–Ni) and Glass Forming (Vit 106 and Vit 106a) Liquids journal February 2015
Neutron scattering experiments on liquid droplets using electrostatic levitation journal March 2011
Temperature Calibration for Optical Pyrometry in Containerless Systems Using Differential Scanning Calorimetry: Application to $$\mathrm{Cu}_{100-x}\mathrm{Zr}_{x}$$ Cu 100 - x Zr x ( $$x=45$$ x = 45 –50) journal July 2014
Short- and medium-range order in Zr 80 Pt 20 liquids journal May 2011
A structural signature of liquid fragility journal August 2014
Does an icosahedral short-range order prevail in glass-forming Zr-Cu melts? journal December 2012
Layering of a liquid metal in contact with a hard wall journal November 1997
Thermal expansion measurements by x-ray scattering and breakdown of Ehrenfest's relation in alloy liquids journal May 2014
Electromagnetic levitation apparatus for investigations of the phase selection in undercooled melts by energy-dispersive x-ray diffraction journal January 2000
Extended x‐ray‐absorption fine structure studies of levitated undercooled metallic melts journal October 1996
Probing the structure of a liquid metal during vitrification journal April 2015
Structural evolution and thermophysical properties of ZrxNi100−x metallic liquids and glasses journal December 2014
First X-Ray Scattering Studies on Electrostatically Levitated Metallic Liquids: Demonstrated Influence of Local Icosahedral Order on the Nucleation Barrier journal May 2003
A new criterion for predicting the glass-forming ability of bulk metallic glasses journal May 2009
Ordered Liquid Aluminum at the Interface with Sapphire journal October 2005
Beamline electrostatic levitator for in situ high energy x-ray diffraction studies of levitated solids and liquids journal July 2005
Structure of metallic glasses journal January 1995
Atomic packing and short-to-medium-range order in metallic glasses journal January 2006
Structural studies of disordered materials using high-energy x-ray diffraction from ambient to extreme conditions journal November 2007
Structure of metallic glasses journal April 1974
Structure and dynamics of liquid Ni 36 Zr 64 studied by neutron scattering journal February 2009
Partial correlations in Ni60Nb40 metallic glass journal November 1981
Structure of Metallic Glasses book January 1985
Short range order in amorphous in Ni62Nb38studied by isotopic neutron diffraction journal September 1988
A highly modular beamline electrostatic levitation facility, optimized for in situ high-energy x-ray scattering studies of equilibrium and supercooled liquids journal March 2011
Contactless investigation on laser-heated oxides by synchrotron radiation journal November 1998
Melting behavior of levitated Y2O3 journal October 2003
Gain-scheduled control of an electrostatic levitator journal February 2003
Improved measures of quality for the atomic pair distribution function journal January 2003
X-ray diffraction study of undercooled molten silicon journal January 2001
Compact electrostatic levitator for diffraction measurements with a two axis diffractometer and a laboratory x-ray source journal February 2007
Medium range order in Zr-noble metal eutectic liquids journal December 2012

Cited By (2)

A uniaxial load frame for in situ neutron studies of stress-induced changes in cementitious materials and related systems journal September 2018
Measurements of structural and chemical order in Z r 80 P t 20 and Z r 77 R h 23 liquids journal February 2016