Sputter-deposited metallic and ceramic coatings for heat engines. Work performed from October 1980 to September 1983. [CoCrAlY; ZrO/sub 2/; Al/sub 2/O/sub 3/; Ni-SiC; quartz-SiC]
Progress in the development of metallic and ceramic coatings with improved high-temperature corrosion and erosion/wear resistance is reported. The objective was to develop coatings that would insure that future heat engines, notably gas turbines and diesels, would be able to operate efficiently on degraded fuel supplies. The majority of coatings investigated were prepared by sputter deposition. Research on sputter-deposited CoCrAlY coatings was directed at improving their low-temperature, hot corrosion resistance by introducing composition gradients and adding platinum. Studies on sputter-deposited ZrO/sub 2/ and Al/sub 2/O/sub 3/ coatings were conducted to improve the thermal cycling resistance of ceramic deposits on metal substrates by using combinations of graded transition layers, columnar ceramic structures, and dense sealing layers. Preliminary results on plasma-sprayed Ni-SiC and quartz-SiC coatings that showed good wear and oxidation resistance are also reported.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 7140429
- Report Number(s):
- PNL-5013; ON: DE84011401
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM ALLOYS
CORROSION RESISTANCE
DEPOSITION
ALUMINIUM OXIDES
CHROMIUM ALLOYS
COBALT ALLOYS
HEAT ENGINES
PROTECTIVE COATINGS
SILICON CARBIDES
YTTRIUM ALLOYS
ZIRCONIUM OXIDES
EROSION
SPUTTERING
WEAR RESISTANCE
ALLOYS
ALUMINIUM COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
COATINGS
ENGINES
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
360105* - Metals & Alloys- Corrosion & Erosion
360205 - Ceramics
Cermets
& Refractories- Corrosion & Erosion