Residual stress in zirconia coating by EB-PVD method
Creators
- 1. Niigata Univ., Dept. of Technology and Living Science, Niigata (Japan)
- 2. Toshiba Corp., Power and Industrial Systems Research and Development Center, Yokohama, Kanagawa (Japan)
- 3. Japan Fine Ceramics Center, Nagoya, Aichi (Japan)
- 4. Japan Atomic Energy Agency, Quantum Beam Science Directorate, Sayo, Hyogo (Japan)
- 5. Kawasaki Heavy Industries, Ltd., Technical Inst., Akashi, Hyogo (Japan)
- 6. Nagoya Univ., Dept. of Mechnical Science and Engineering, Nagoya, Aichi (Japan)
Description
The Ni-based superalloy IN738LC was used as the substrate material, and CoNiCrAlY powder was pressureless plasma-sprayed on the substrate as the bond coating. Zirconia was coated as the top coating by the electron beam-physical vapor deposition (EB-PVD) method. In the EB-PVD process, the specimens were kept at 1223 K and rotated with 5rpm, 10rpm and 20rpm. According to the microscopic observation and the result of the pole figures, the top coatings had a columnar structure, which was made by the piling up of (111) planes. The cross section of the column had a diamond shape, and its diagonal was parallel to the rotation axis. The residual stress on the surface of the top coatings was evaluated by the X-ray diffraction method. Each diffraction profile was separated into the 133 and the 331 peak, and the residual stress was measured by the sin2 ψ method. The measured residual stresses were -76.7 MPa for 5rpm, -63.0MPa for 10rpm and -25.1MPa for 20rpm. (author)
Additional details
Publishing Information
- Journal Title
- Zairyo
- Journal Volume
- 56
- Journal Issue
- 7
- Journal Page Range
- p. 588-593
- ISSN
- 0514-5163
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 39009868
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- COATINGS; ELECTRON BEAMS; EVALUATION; HEAT RESISTING ALLOYS; INCONEL ALLOYS; PHYSICAL VAPOR DEPOSITION; RESIDUAL STRESSES; SURFACES; THERMAL BARRIERS; X-RAY DIFFRACTION; ZIRCONIUM OXIDES
- Descriptors DEC
- ALLOYS; BEAMS; CHALCOGENIDES; COHERENT SCATTERING; DEPOSITION; DIFFRACTION; HEAT RESISTANT MATERIALS; LEPTON BEAMS; MATERIALS; NICKEL ALLOYS; NICKEL BASE ALLOYS; OXIDES; OXYGEN COMPOUNDS; PARTICLE BEAMS; SCATTERING; STRESSES; SURFACE COATING; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS
Optional Information
- Notes
- 10 refs., 11 figs., 2 tabs.