Behavior of ion vapor deposited aluminum in marine environments

Book · Sat Dec 31 04:00:00 EST 1994

OSTI ID:83070

McIntyre, J F ^[1]; Scaturro, M R ^[2]; Reilly, J J ^[3]

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1. Florida Atlantic Univ., Boca Raton, FL (United States). Dept. of Ocean Engineering
2. Naval Surface Warfare Center, Port Hueneme, CA (United States). Port Hueneme Division
3. McDonnel Douglas Corp., St. Louis, MO (United States)

The Clean Air Act Amendments of 1990 and pending changes in the Clean Water Act make it imperative that alternative coating systems be developed and evaluated. With this in mind, the efficacy of ion vapor deposited aluminum as an environmentally compliant coating for the replacement of cadmium coatings and zinc chromate primers is presented herein. Previous work also indicates that ion vapor deposited aluminum coatings provide an effective basecoat for organic topcoats such as epoxies and polyurethanes. The focus of this manuscript is to provide a review of the corrosion behavior of ion vapor deposited aluminum coatings as applied to steel substrates exposed to chloride containing environments. Some preliminary data on research in progress will also be presented and discussed. In general, cadmium coatings perform better than aluminum coatings in neutral salt-spray testing; however, they do not perform as well as ion vapor deposited aluminum coatings when exposed to SO{sub 2}/salt-spray and most outdoor environments, particularly in marine atmospheric exposure. 35 refs.

• OSTI ID: 83070
• Report Number(s): CONF-940222--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
ALUMINIUM
CORROSION PROTECTION
CORROSION RESISTANCE
CORROSIVE EFFECTS
ENERGY BEAM DEPOSITION
EXPERIMENTAL DATA
SEAWATER
STEELS
SULFUR DIOXIDE