- Title
- Further new interpretations of the corrosion of ferrous metals in soils
- Creator
- Melchers, R. E.; Petersen, R. B.; Wells, T.
- Relation
- Corrosion and Prevention 2018. Annual Conference. Annual Conference of the Australasian Corrosion Association: Corrosion & Prevention 2018 Proceedings (Adelaide, SA 11-14 November, 2018)
- Publisher
- Australasian Corrosion Association
- Resource Type
- conference paper
- Date
- 2018
- Description
- The long-term corrosion of steels and cast irons in various types of soil, without cathodic protection, remains of much interest for certain applications such as the remaining viability of internally cement lined cast iron water pipes used extensively in water supply networks in many major cities. Some existing pipes are more than 130 years and still in good condition whilst others, much younger, have failed or are showing signs of severe external corrosion. Herein earlier work is extended using the US NBS data base for corrosion of ferrous objects in soils and additional data for the average annual precipitation, or time of wetness, to show that these are related to the severity of localized corrosion. However, the relationship depends on soil type. Failure to differentiate soil types is considered responsible for the failure of previous efforts to relate time of wetness to corrosion. The results allow explanation for the generally higher rate of corrosion of cast iron water pipes in cities such as Sydney and Newcastle compared with many places in the UK.
- Subject
- steel; cast iron; soils; clays; long-term; corrosion
- Identifier
- http://hdl.handle.net/1959.13/1405985
- Identifier
- uon:35572
- Identifier
- ISBN:9781510881372
- Language
- eng
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