Kargl, F and Engelhardt, M and Yang, F and Weis, H and Schmakat, P and Schillinger, B and Griesche, A and Meyer, A (2011) In situ studies of mass transport in liquid alloys by means of neutron radiography. Journal of Physics - Condensed Matter, 23 (254201). Institute of Physics. DOI: 10.1088/0953-8984/23/25/254201.
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Official URL: http://iopscience.iop.org/0953-8984/23/25/254201/
When in situ techniques became available in recent years this led to a breakthrough in accurately determining diffusion coefficients for liquid alloys. Here we discuss how neutron radiography can be used to measure chemical diffusion in a ternary AlCuAg alloy. Neutron radiography hereby gives complementary information to x-ray radiography used for measuring chemical diffusion and to quasielastic neutron scattering used mainly for determining self-diffusion. A novel Al2 O3 based furnace that enables one to study diffusion processes by means of neutron radiography is discussed. A chemical diffusion coefficient of Ag against Al around the eutectic composition Al68.6 Cu13.8 Ag17.6 at.% was obtained. It is demonstrated that the in situ technique of neutron radiography is a powerful means to study mass transport properties in situ in binary and ternary alloys that show poor x-ray contrast.
|Title:||In situ studies of mass transport in liquid alloys by means of neutron radiography|
|Date:||8 June 2011|
|Journal or Publication Title:||Journal of Physics - Condensed Matter|
|In ISI Web of Science:||Yes|
|Publisher:||Institute of Physics|
|Keywords:||neutron radiography, mass transport, liquid metals|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||other|
|DLR - Research area:||Raumfahrt|
|DLR - Program:||R - no assignement|
|DLR - Research theme (Project):||R -- no assignement|
|Institutes and Institutions:||Institute of Materials Physics in Space|
|Deposited By:||Dr Florian Kargl|
|Deposited On:||25 Aug 2011 11:05|
|Last Modified:||07 Feb 2013 20:14|
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