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]

Technical Report · Sun Apr 01 04:00:00 EST 1984

DOI:https://doi.org/10.2172/7140429· OSTI ID:7140429

Prater, J T; Moss, R W

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 Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 7140429
• Report Number(s): PNL-5013; ON: DE84011401
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
CHROMIUM ALLOYS
COATINGS
COBALT ALLOYS
CORROSION RESISTANCE
DEPOSITION
ENGINES
EROSION
HEAT ENGINES
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PROTECTIVE COATINGS
SILICON CARBIDES
SILICON COMPOUNDS
SPUTTERING
TRANSITION ELEMENT COMPOUNDS
WEAR RESISTANCE
YTTRIUM ALLOYS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES