Published July 1978 | Version v1
Report Metadata-only

TEM studies of neutron induced changes in pyrocarbon microstructure and the influence of microstructural variations on gaseous fission product retention

Creators

  • 1. Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.)

Description

Transmission electron microscopy investigations were performed on pyrocarbon coated fuel particles to determine the changes in microstructure induced by neutron irradiation of various types of coatings, appropriate for HTR service. Measurements of the volume fraction of the mosaic component as a function of the layer radius, changes of the microstructure during irradiation, and variation of the specific crack length are reported. The investigations were undertaken to provide data on the release of fission products. (GSC)

Abstract (German)

Es wurden Untersuchungen mittels Durchstrahlungselektronenmikroskop an mit Pyrokohlenstoff beschichteten Brennstoffteilchen durchgefuehrt, um die Aenderung der Mikrostruktur infolge Neutronenbestrahlung bei verschiedenen fuer den Einsatz im HTR geeigneter Beschichtungen zu bestimmen. Es wird ueber Messungen des Volumenanteils der Mosaik-Komponente als Funktion des Schichtradius, Aenderungen der Mikrostruktur waehrend der Bestrahlung und Schwankung der spezifischen Risslaenge berichtet. Die Untersuchungen wurden durchgefuehrt, um Daten ueber die Freisetzung von Spaltprodukten zu liefern. (GSC)

Additional details

Publishing Information

Imprint Title
Contributions for the fifth London international conference on carbon and graphite
Journal Page Range
p. 10-21.
Report number
Juel-Conf--25

Conference

Title
5. London international conference on industrial carbon and graphites.
Dates
18 - 22 Sep 1978.
Place
London, UK.

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
10440855
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
COATED FUEL PARTICLES; CRACKS; DENSITY; ELECTRON MICROSCOPY; FAST NEUTRONS; FISSION PRODUCT RELEASE; MICROSTRUCTURE; PHYSICAL RADIATION EFFECTS; PYROLYTIC CARBON; SAMPLE PREPARATION; VAPOR DEPOSITED COATINGS
Descriptors DEC
BARYONS; CARBON; COATINGS; CRYSTAL STRUCTURE; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; FUEL PARTICLES; HADRONS; MICROSCOPY; NEUTRONS; NONMETALS; NUCLEONS; PHYSICAL PROPERTIES; RADIATION EFFECTS