Published January 1982 | Version v1
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Delay of the attack of liquid steel on niobium by TiN/TiC multilayer protection coatings

Creators

  • 1. Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Projekt Schneller Brueter
  • 2. Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Inst. fuer Reaktorentwicklung
  • 3. Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Inst. fuer Neutronenphysik und Reaktortechnik

Description

Delay of the attack of liquid steel on niobium by TiN/TiC multilayer protection coatings. The CABRI-test channel made of niobium has to be protected against the solution attack of liquid steel occuring during transient over power experiments. Following investigations on high temperature materials and solution tests a protective multilayer coating from NbC, TiN, TiC, TiN was elaborated. Melt tests with liquid steel on coated niobium specimens demonstrated evidently the protective efficiency of the multilayer. Contact with sodium for two hours came out to be harmless concerning the integrity of the multilayer. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Verzoegerung des Angriffs von fluessigem Stahl auf Niob, durch Aufbringen von mehrlagigen TiN/TiC-Schutzschichten. Der CABRI-Testkanal aus Niob muss bei den Stoerfallexperimenten mit versagendem Brennstab gegen den Angriff von fluessigem Stahl geschuetzt werden. Auf Grund von Materialuntersuchungen und Loesungstests wurde hierfuer eine Innenbeschichtung der Niobkanaele mit einer Mehrfachschicht aus NbC, TiN, TiC, TiN vorgeschlagen. In Schmelztests mit fluessigem Stahl auf derartig beschichteten Niobrohrproben konnte das Rueckhaltevermoegen der Mehrfachschicht nachgewiesen werden. Der mehrstuendige Kontakt mit fluessigem Natrium hatte keinen Einfluss auf die Integritaet der Schicht. (orig.)

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Additional details

Additional titles

Original title (German)
Verzoegerung des Angriffs von fluessigem Stahl auf Niob, durch Aufbringen von mehrlagigen TiN/TiC-Schutzschichten

Publishing Information

Imprint Pagination
158 p.
Report number
KFK--3257

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
13692162
Subject category
S61: RADIATION PROTECTION AND DOSIMETRY; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
ADHESION; CABRI REACTOR; COMPATIBILITY; DIFFUSION; EXPERIMENTAL CHANNELS; FUEL CANS; FUEL ELEMENT FAILURE; LIQUID METALS; MELTING; NIOBIUM; NIOBIUM CARBIDES; PROTECTIVE COATINGS; REACTOR SAFETY EXPERIMENTS; SODIUM; SOLUBILITY; STABILITY; STEEL-DIN-1-4988; TITANIUM CARBIDES; TITANIUM NITRIDES
Descriptors DEC
ACCIDENTS; ALKALI METALS; ALLOYS; CARBIDES; CARBON ADDITIONS; CARBON COMPOUNDS; CHROMIUM ALLOYS; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; COATINGS; ELEMENTS; ENRICHED URANIUM REACTORS; FLUIDS; IRON ALLOYS; IRON BASE ALLOYS; LIQUIDS; METALS; NICKEL ALLOYS; NIOBIUM COMPOUNDS; NITRIDES; NITROGEN COMPOUNDS; PHASE TRANSFORMATIONS; POOL TYPE REACTORS; REACTOR ACCIDENTS; REACTOR CHANNELS; REACTOR COMPONENTS; REACTOR EXPERIMENTAL FACILITIE; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; STEELS; THERMAL REACTORS; TITANIUM COMPOUNDS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; WATER COOLED REACTORS; WATER MODERATED REACTORS