Atmospheric corrosion of metals in industrial city environment
نویسندگان
چکیده
Atmospheric corrosion is a significant problem given destruction of various materials, especially metals. The corrosion investigation in the industrial city environment was carried out during one year exposure. Corrosion potential was determined using the potentiometric method. The highest effect of corrosion processes was observed during the winter season due to increased air pollution. Corrosion of samples pre-treated in tannic acid before the exposure was more difficult compared with the samples without pretreatment. The corrosion products determined with the SEM/EDS method prove that the most corrosive pollutants present in the industrial city air are SO2, CO2, chlorides and dust.
منابع مشابه
Corrosion behavior of metals and alloys in marine-industrial environment.
This work deals with atmospheric corrosion to assess the degrading effects of air pollutants on ferrous and non-ferrous metals and alloys, which are mostly used as engineering materials. An exposure study was conducted in the Tuticorin port area located on the east coast of South India, in the Gulf of Mannar with Sri Lanka to the southeast. Common engineering materials, namely mild steel, galva...
متن کاملThe Results of 45 Years of Atmospheric Corrosion Study in the Czech Republic
Atmospheric corrosion poses a significant problem with regard to destruction of various materials, especially metals. Observations made over the past decades suggest that the world's climate is changing. Besides global warming, there are also changes in other parameters. For example, average annual precipitation increased by nearly 10% over the course of the 20th century. In Europe, the most si...
متن کاملبررسی فلزات سنگین درذرات راسب شونده از هوای شهر زنجان
Backgrounds and Objectives : Heavy metals in dust can enter to the human body through ingestion andinhalation. They can pollute the water and soil resources via atmospheric precipitation and accumulate in the plants tissue and enter human body by water and food. The aim of this study was measurement of the heavy metals in wet and dry atmospheric precipitation and effects of pollution sources at...
متن کامل1 Basics of Corrosion Chemistry
Metallic materials in practical use are normally exposed to corrosion in the atmospheric and aqueous environments. Metallic corrosion is one of the problems we have often encountered in our industrialized society; hence it has been studied comprehensively since the industrial revolution in the late eighteenth century. Modern corrosion science was set off in the early twentieth century with the ...
متن کاملA Wireless Sensor Network for Monitoring Atmospheric Aggressiveness in Metals
Humid tropical climate favours the existence of a corrosive atmosphere that causes deterioration of metals. This article describes an automated system for monitoring environmental values (temperature and relative humidity) in order to know the time of wetness (TOW), which is key factor in determining the atmospheric aggressiveness which are exposed the metals used, for example, in industrial fa...
متن کامل