Published 1982 | Version v1
Report Restricted

Graphite oxidation in HTGR atmosphere

Creators

  • 1. Brookhaven National Lab., Upton, NY

Description

On-going and recently completed studies of the effect of thermal oxidation on the structural integrity of HTGR candidate graphites are described, and some results are presented and discussed. This work includes the study of graphite properties which may play decisive roles in the graphites' resistance to oxidation and fracture: pore size distribution, specific surface area and impurity distribution. Studies of strength loss mechanisms in addition to normal oxidation are described. Emphasis is placed on investigations of the gas permeability of HTGR graphites and the surface burnoff phenomenon observed during recent density profile measurements. The recently completed studies of catalytic pitting and the effects of prestress and stress on reactivity and ultimate strength are also discussed

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Additional details

Publishing Information

Imprint Title
Third Japan-US seminar on HTGR safety technology: proceedings. Volume II
Journal Page Range
p. 479-499.
Report number
NUREG/CP--0045-Vol.2

Conference

Title
3. Japan/US HTGR safety technology seminar.
Dates
2-3 Jun 1982.
Place
Upton, NY (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
15034084
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CORROSION; DIFFUSION; FRACTURES; GRAPHITE; HTGR TYPE REACTORS; IMPURITIES; MICROSTRUCTURE; MODERATORS; OXIDATION; PERMEABILITY; PITTING CORROSION; POROSITY; PRIMARY COOLANT CIRCUITS; REACTOR MATERIALS; SIZE; STRESSES; SURFACE PROPERTIES; SURFACES; TENSILE PROPERTIES; ULTIMATE STRENGTH
Descriptors DEC
CARBON; CHEMICAL REACTIONS; COOLING SYSTEMS; CRYSTAL STRUCTURE; ELEMENTS; FAILURES; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; MATERIALS; MECHANICAL PROPERTIES; NONMETALS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS