Corrosion of iron, aluminum and copper-base alloys in glycols under simulated solar collector conditions

Conference · Thu Oct 01 04:00:00 EDT 1981 · Proc. - Electrochem. Soc.; (United States)

OSTI ID:7174978

Beavers, J A; Diegle, R B

The corrosion behavior of iron, aluminum and copperbase alloys was studied in uninhibited glycol solutions under conditions that simulate those found in non-concentrating solar collectors. It was found that only Type 444 stainless steel exhibited adequate corrosion resistance; there was no evidence of pitting, crevice corrosion, or galvanic attack, and general corrosion rates were low. The general corrosion rate of CDA 122 copper was high (greater than 200 ..mu..m/y) under some test conditions, but copper was resistant to pitting and crevice attack. General corrosion rates of the aluminum alloys (1100, 3003 and 6061) were low, but these alloys were susceptible to pitting and crevice attack. The propensity for pitting was greatest in the presence of chlorides but it also was severe in the absence of chlorides following long exposures. The onset of pitting of the aluminum alloys in chloride-free solutions was attributed to degradation of the glycols.

• Research Organization: Battelle Columbus Laboratories, Columbus, Ohio
• DOE Contract Number: AC04-79CS10510
• OSTI ID: 7174978
• Report Number(s): CONF-811013-
• Conference Information: Journal Name: Proc. - Electrochem. Soc.; (United States) Journal Volume: 83-1
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
ALCOHOLS
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
COPPER ALLOYS
COPPER BASE ALLOYS
CORROSION
CORROSION RESISTANCE
CORROSIVE EFFECTS
DISPERSIONS
EQUIPMENT
GLYCOLS
HYDROXY COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MIXTURES
ORGANIC COMPOUNDS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLUTIONS
TESTING