Study of corrosion and its control in aluminum solar collectors. Progress report, December 1, 1976--February 28, 1977

Technical Report · Fri Apr 01 04:00:00 EST 1977

OSTI ID:7213043

Giner, J; Cocks, F; Wong, D

The corrosion behavior of aluminum alloys in water/ethylene glycol solutions under solar thermal energy collector operating conditions is being investigatd according to the plan of tasks presented in the first quarterly report. The proposed tasks consist of (I) field study of the existing solar collector systems, (II) laboratory study of the corrosion of 1100 series aluminum under various relevant conditions, (III) corrosion study of other alloy/coolant systems, (IV) determination of an aluminum alloy galvanic series in water/ethylene glycol mixtures, and (V) attempting to develop a method to predict the onset of pits via electrochemical measurement. The linear polarization resistance technique is being used in determining the overall corrosion rate, along with quantitative metallographic analysis of pit formation and growth. Research and progress on the five tasks are reported. (WHR)

• Research Organization: Giner, Inc., Waltham, Mass. (USA)
• OSTI ID: 7213043
• Report Number(s): COO/2934-3
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALCOHOLS
ALLOYS
ALUMINIUM ALLOYS
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
CORROSION
CORROSION RESISTANCE
CORROSIVE EFFECTS
DISPERSIONS
ELECTROCHEMICAL CORROSION
FLUIDS
GLYCOLS
HYDROXY COMPOUNDS
MIXTURES
ORGANIC COMPOUNDS
PITTING CORROSION
POLARIZATION
SOLAR COLLECTORS
SOLUTIONS
WORKING FLUIDS