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Sulfuro de carbonilo: agente potencial de la corrosión atmosférica por azufre
Resumen
El sulfuro de carbonilo (COS) en el aire húmedo corroe el cobre de manera similar al sulfuro de hidrógeno. Su mayor concentración atmosférica sugiere que COS puede ser una causa significativa de la corrosión por azufre.
Área de la Ciencia:
- Ciencias ambientales Ciencias ambientales.
- Ciencia de los materiales Ciencia de los materiales.
- Química Química es la química.
Sus antecedentes:
- Los compuestos atmosféricos de azufre contribuyen a la degradación de los materiales.
- El cobre es susceptible a la corrosión por los gases sulfurosos.
- Comprender los mecanismos de corrosión es vital para la preservación del material.
Objetivo del estudio:
- Para investigar los efectos corrosivos del sulfuro de carbonilo (COS) en el cobre.
- Para comparar la tasa de corrosión de COS con los corrodores conocidos como el sulfuro de hidrógeno (H2S).
- Para evaluar el papel potencial de COS en la corrosión atmosférica de azufre.
Principales métodos:
- Experimentos de laboratorio que exponen el cobre al sulfuro de carbonilo en el aire húmedo a 22°C.
- Variación controlada del tiempo de exposición y la concentración de COS.
- Medición de las tasas de corrosión del cobre.
Principales resultados:
- La corrosión del cobre por COS en el aire húmedo se observó a 22°C.
- La tasa de corrosión mostró una relación lineal con la exposición total (concentración × tiempo).
- Las tasas de corrosión COS fueron comparables a las del sulfuro de hidrógeno.
Conclusiones:
- El sulfuro de carbonilo es un corrodor significativo para el cobre.
- La alta abundancia atmosférica de COS indica su potencial como un agente importante de la corrosión atmosférica de azufre.
- Se justifica una mayor investigación sobre la corrosión inducida por COS.
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