Small-Angle Neutron Scattering in a High-Temperature Furnace

1994 ◽  
Vol 376 ◽  
Author(s):  
G.G. Long ◽  
H.M. Kerch ◽  
S. Krueger ◽  
A.J. Allen ◽  
H. Burdette
Keyword(s):  
High Temperature ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Process Models ◽  
Pore Sizes ◽  
Surface Areas ◽  
High Temperature Furnace ◽  
Materials Research

ABSTRACTSmall-angle neutron scattering (SANS) is increasingly used to obtain statistically-representative data on particle or pore sizes, number and volume fractions, morphology and total surface areas in technological materials. Until recently, however, it had not been possible to perform in-situ microstructural investigations during thermal treatment. This paper reports on a new high-temperature (up to 1700°C) SANS furnace for materials research. Two interchangeable inner furnaces were built for a single outer atmosphere chamber so that either an oxidizing, a reducing, or a neutral environment can be used. Results derived during sintering of a controlled-porosity silica gel will be presented. The new furnace has made it possible for the first time to measure total porous surface areas and the evolution of pore sizes in situ during densification without interruption. Such measurements are expected to lead to improved process models offering quantitative predictability of product microstructures from the processing history of real materials.

A High-Temperature Furnace for In Situ Small-Angle Neutron Scattering during Ceramic Processing

1995 ◽  
Vol 28 (5) ◽  
pp. 604-610 ◽  
Author(s):  
H. M. Kerch ◽  
H. E. Burdette ◽  
G. G. Long
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Nuclear Reactor ◽  
Quantitative Measure ◽  
Sintering Behavior ◽  
Pore Sizes ◽  
Microstructural Parameters ◽  
Surface Areas

The design and operation of a new research furnace, optimized for small-angle neutron scattering experiments at a steady-state nuclear reactor with a cold source, are presented. The apparatus enables the study of thermal processing of materials, such as the sintering behavior in ceramics, through the measurement of their microstructural parameters (e.g. pore sizes, pore volumes and pore surface areas) during thermal treatment. Small-angle neutron scattering measurements can be performed in situ in an oxidizing, reducing or neutral environment at temperatures up to 2000 K. Representative data, obtained from the sintering of a silica gel, are presented, including analysis, which offers the first quantitative measure of the evolution of the surface areas, the pore sizes and the pore-size distribution within a real material during densification.

High temperature furnace for small-angle neutron scattering instrument at J-PARC

2019 ◽  
Vol 21 (1-2) ◽  
pp. 29-38
Author(s):  
Y. Sakaguchi ◽  
S. Takata ◽  
H. Arima ◽  
R. Takahashi
Keyword(s):  
High Temperature ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
High Temperature Furnace ◽  
Temperature Furnace

An in situ small angle neutron scattering study of expanded graphite under a uniaxial stress

Carbon ◽  
2013 ◽  
Vol 57 ◽  
pp. 460-469 ◽  
Author(s):  
Félix Balima ◽  
Vittoria Pischedda ◽  
Sylvie Le Floch ◽  
Annie Brûlet ◽  
Peter Lindner ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Expanded Graphite ◽  
Uniaxial Stress ◽  
Scattering Study ◽  
Neutron Scattering Study
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