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Titolo:
A STUDY OF COPPER RUNOFF IN AN URBAN ATMOSPHERE
Autore:
WALLINDER IO; LEYGRAF C;
Indirizzi:
ROYAL INST TECHNOL,DEPT MAT SCI & ENGN,DIV CORROS SCI,DR KRISTIMAS V 51 SE-10044 STOCKHOLM SWEDEN
Titolo Testata:
Corrosion science
fascicolo: 12, volume: 39, anno: 1997,
pagine: 2039 - 2052
SICI:
0010-938X(1997)39:12<2039:ASOCRI>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORROSION;
Keywords:
COPPER; MICROGRAVIMETRY; ATOMIC ABSORPTION; ATMOSPHERIC CORROSION; RUNOFF; CORROSION PRODUCTS;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
I.O. Wallinder e C. Leygraf, "A STUDY OF COPPER RUNOFF IN AN URBAN ATMOSPHERE", Corrosion science, 39(12), 1997, pp. 2039-2052

Abstract

Initiated by the concern in several countries regarding the release of copper from, e.g., roofs, facings and other outdoor constructions, the present study aims to compare runoff rates with corrosion rates during exposure of copper in an urban atmosphere. The copper runoff rate turns out to be relatively stable during the 2 year period studied, with an average rate per year of around 135 mu g Cu cm(-2). This stable runoff rate is associated with the formation and dissolution properties of cuprite (Cu2O), which is the dominating copper patina phase throughout the 2 year period. The copper corrosion rate, on the other hand,is highly time-dependent. It exhibits an initially high value and decreases with exposure time. As a consequence, the ratio between copper runoff and copper mass loss is very low in the beginning, around 7% after 1 month, and increases with time to reach around 22% after 2 years. With prolonged exposure this ratio eventually reaches 100%, corresponding to a copper patina thickness that does not change any further with time. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 11:54:58