ABATEMENT OF BIOFOULING AND CORROSION IN OTEC HEAT EXCHANGERS USING LOW ENERGY SURFACES
The concept that fouling and corrosion are controlled on low energy metal surfaces treated with fluorochemicals is discussed. The surfaces of selected metals are chemically modified with a fluorochemical monolayer to minimize their surface energy. In the ocean at Miami, these low energy surfaces abate algae fouling on aluminum alloy No. 3003-H14 and commercially pure titanium. Also, they protect the aluminum and 90-10 copper-nickel alloy No. 706 from seawater corrosion. However, barnacle fouling is observed on all panel surfaces. Electron spectroscopic and electron microscopic analysis of the outermost surface points to the possible reasons for this growth. Additional work is needed to more fully understand the important factors that relate the monolayer characteristics -- monolayer compositon, surface energy and surface coverage -- to antibiofouling and anticorrosion performance.
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Supplemental Notes:
- Presented at Sharing the Sun: Solar Technology in the Seventies, Joint Conference of the International Solar Energy Society, Solar Energy Society of Canada, Incorporated, Winnipeg, Manitoba, August 15-20, 1976.
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Corporate Authors:
International Solar Energy Society
National Science Centre, P.O. Box 52
Parkville, Victoria 3052, Australia -
Authors:
- Ostrozynski, R L
- Jones, P E
- Conference:
- Publication Date: 1976
Media Info
- Features: References;
- Pagination: p. 436-445
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Serial:
- Volume: 5
Subject/Index Terms
- TRT Terms: Antifouling coatings; Applications; Chemical compounds; Corrosion; Corrosion protection; Energy conversion; Fluorine; Heat exchangers; Oceans; Seawater; Temperature gradients; Thermal power generation
- Old TRIS Terms: Fluorine compounds; Thermal gradients
- Subject Areas: Marine Transportation; Research;
Filing Info
- Accession Number: 00168314
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: Jan 30 1978 12:00AM