Analytical and experimental evaluation of joining ceramic oxides to ceramic oxides and ceramic oxides to metal for advanced heat engine applications
- Battelle Columbus Labs., OH (United States)
The problem of designing reliable, high strength zirconia-to-zirconia and zirconia-to-nodular cast iron joints is addressed by developing a general joint design and assessment methodology. A joint's load carrying capability is predicted in terms of its material strength and fracture toughness characteristics. The effects of joint constituent properties and joining process variables are included. The methodology is verified in a two step process by applying it first to notched bend bars and then to a notched disk specimen loaded in compression. Key technical accomplishments in the program include the development of a joint design and assessment methodology which predicts failure based on a combination of strength and toughness, the development of a new method of hot forging magnesia partially stabilized zirconia to itself, and the development of a bimaterial disk-shaped specimen notched along the diametral bond line and compressively loaded to generate both shear and tensile loadings on the bond line. Mechanical and thermal characterization of joints, adherents, and interlayer materials were performed to provide data for input to the design methodology. Results from over 150 room temperature tests and 30 high temperature tests are reported. Extensive comparisons of experimental results are made with model predictions of failure load. The joint design and assessment model, as applied to the materials and test specimens of this program, has been programmed for a PC and is available to interested researchers.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Battelle Columbus Labs., OH (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 7070145
- Report Number(s):
- ORNL/Sub-87-SB046/1; ON: DE92041383
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
36 MATERIALS SCIENCE
HEAT ENGINES
MATERIALS
METALS
JOINING
ZIRCONIUM OXIDES
CAST IRON
CERAMICS
COMPUTERIZED SIMULATION
JOINTS
PROGRESS REPORT
ALLOYS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
DOCUMENT TYPES
ELEMENTS
ENGINES
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
IRON CARBIDES
IRON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SIMULATION
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
330100* - Internal Combustion Engines
200104 - Fossil-Fueled Power Plants- Components
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication