Published September 2006
| Version v1
Journal article
In situ small-angle neutron scattering study of La2Zr2O7 and SrZrO3 ceramics for thermal barrier coatings
- 1. Research Centre Rez, 250 68 Rez near Prague (Czech Republic)
- 2. Hahn-Meitner-Institut Berlin, Glienicker Street 100, 14109 Berlin (Germany)
- 3. Institut fuer Werkstoffe und Verfahren der Energietechnik (IWV1), FZ Juelich (Germany)
- 4. Nuclear Physics Institute, 25068 Rez near Prague (Czech Republic)
Description
Ex and in situ (≤1300 deg. C) small-angle neutron scattering (SANS) experiments on annealed layers of air-plasma sprayed La2Zr2O7 and SrZrO3 for thermal barrier coatings are presented. The deposits exposed at 1200 deg. C up to 100 h showed a stable microstructure of large pores. Medium-size (∼10-50 nm) intragranular pores sinter during the exposure. The in situ SANS revealed that this process starts at 1000 deg. C. In contrast to La2Zr2O7, the creation of nanopores starting at 900 deg. C was detected in the SrZrO3 layer. These nanopores began to disappear at 1100 deg. C
Additional details
Identifiers
- DOI
- 10.1016/j.scriptamat.2006.05.022;
- PII
- S1359-6462(06)00399-X;
Publishing Information
- Journal Title
- Scripta Materialia
- Journal Volume
- 55
- Journal Issue
- 6
- Journal Page Range
- p. 545-548
- ISSN
- 1359-6462
- CODEN
- SCMAF7
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38064068
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANNEALING; CERAMICS; COATINGS; DEPOSITS; LANTHANUM COMPOUNDS; LAYERS; MICROSTRUCTURE; NEUTRON DIFFRACTION; POROUS MATERIALS; SMALL ANGLE SCATTERING; THERMAL BARRIERS; ZIRCONATES
- Descriptors DEC
- COHERENT SCATTERING; DIFFRACTION; HEAT TREATMENTS; MATERIALS; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.