Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

03592 SEASONAL CHANGES IN ATMOSPHERIC CORROSIVITY

Picture for 03592 SEASONAL CHANGES IN ATMOSPHERIC CORROSIVITY
Available for download
Product Number: 51300-03592-SG
ISBN: 03592 2003 CP
Author: R.D. Klassen, P.R. Roberge, H. Nyugen, P.W. Haberecht
$0.00
$20.00
$20.00
There have been several attempts to correlate environmental and site-specific variables with atmospheric corrosivity, including the PACER LIME algorithm and the ISO 9223 classification of corrosive atmospheres. However, seasonal variations in corrosivity at the locations tested in this study cannot be readily explained by either of these approaches. The monthly or seasonal corrosivity variations do not track well with monthly variations in time-of-wetness (TOW) or SO2 concentration. It is possible that the approach of averaging TOW, SO2, or chloride deposition rate over a year- or monthlong period hides shorter-term events that are truly influential. Therefore, while seasonal or month-long measurements of corrosivity provide more insight than yearlong measurements, it seems necessary to reduce the time scale down to days or hours before clear correlations can be made between corrosivity and corrosion drivers. Also, in urban settings where roads are de-iced, it is necessary to measure chloride deposition rates since it is a significant corrosion driver. Another conclusion is that accounting for the effects of insolation from the sun and convection on the surface temperature of an exposed metal provides more insights than time-of-wetness calculations, which relies on relative humidity alone. Keywords: atmospheric corrosivity, seasonal changes, pollution, time-of-wetness
There have been several attempts to correlate environmental and site-specific variables with atmospheric corrosivity, including the PACER LIME algorithm and the ISO 9223 classification of corrosive atmospheres. However, seasonal variations in corrosivity at the locations tested in this study cannot be readily explained by either of these approaches. The monthly or seasonal corrosivity variations do not track well with monthly variations in time-of-wetness (TOW) or SO2 concentration. It is possible that the approach of averaging TOW, SO2, or chloride deposition rate over a year- or monthlong period hides shorter-term events that are truly influential. Therefore, while seasonal or month-long measurements of corrosivity provide more insight than yearlong measurements, it seems necessary to reduce the time scale down to days or hours before clear correlations can be made between corrosivity and corrosion drivers. Also, in urban settings where roads are de-iced, it is necessary to measure chloride deposition rates since it is a significant corrosion driver. Another conclusion is that accounting for the effects of insolation from the sun and convection on the surface temperature of an exposed metal provides more insights than time-of-wetness calculations, which relies on relative humidity alone. Keywords: atmospheric corrosivity, seasonal changes, pollution, time-of-wetness
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 01544 THE EFFECTS OF WIND ON LOCAL ATMOSPHERIC
Available for download

01544 THE EFFECTS OF WIND ON LOCAL ATMOSPHERIC CORROSIVITY

Product Number: 51300-01544-SG
ISBN: 01544 2001 CP
Author: R.D. Klassen and P.R. Roberge
$20.00
Picture for Formation of Galvanic Cells and Localized Corrosion under Atmospheric Conditions
Available for download

51316-7212-Formation of Galvanic Cells and Localized Corrosion under Atmospheric Conditions

Product Number: 51316-7212-SG
ISBN: 7212 2016 CP
Author: Dominique Thierry
Publication Date: 2016
$20.00

The aim of this study was to determine the mechanism of atmospheric corrosion of zinc in areas of local NaCl contamination and to define the driving force of spreading of electrochemical reactions using Scanning Kelvin Probe (SKP).
Picture for Continuous Monitoring of Atmospheric Corrosion and Coating Degradation
Available for download

Continuous Monitoring of Atmospheric Corrosion and Coating Degradation

Product Number: 51317--8834-SG
ISBN: 8834 2017 CP
Author: Fritz Friedersdorf
Publication Date: 2017
$20.00

A recently developed coating and corrosion monitoring system to evaluate the capacity of a corrosion protection system to control alloy free corrosion and galvanic corrosion maintain barrier properties and resist environment assisted cracking.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support