Corrosivity of Atmospheres in the Korean Peninsula
2
조회
0
다운로드
6
인용
0
참고문헌
키워드
초록
The Korean Peninsula is located in the middle latitude of the northern hemisphere and has a clear 4-seasons and shows the typical temperate climate. Because of seasonal winds, it is cold and dry by a northwestern wind in the winter and it is hot and humid by a southeast wind in the summer. Also, temperature difference between the winter and the summer is large and it shows a rainy season from June to July but recently this regular trend may be greatly changed by an unusual weather phenomena. Since the Peninsula is east high west low type, the climate is complicated too. Because these geographical and climate characteristics can affect the properties of corrosion of metals and alloys, a systematic research on atmospheric corrosion in the Peninsula is required to understand and control the corrosion behavior of the industrial facilities. This paper analyzed the atmospheric corrosion factors for several environments in the Korean Peninsula and categorized the corrosivity of atmospheric corrosion of metals and alloys on the base of the related ISO standards. Annual pH values of rain showed the range of 4.5~5.5 in Korean Peninsula from 1999to 2009 and coastal area showed relatively the low pH's rain. Annual SO_2 concentrations is reduced with time and its concentrations of every major cities were below the air quality standard, but NO_2 concentration revealed a steady state and its concentration of Seoul has been over air quality standard. In 2007, SO2classes of each sites were in P_0~P_1, and chloride classes were in S0~S1, and TOW classes were in τ3~τ4. That is, SO_2 and chloride classes were low but TOW class was high in Korean Peninsula. On the base of these environmental classes, corrosivity of carbon steel, zinc, copper, aluminium can be calculated that carbon steel was in C2-C3 classes and it was classified as low-medium, and zinc, copper, and aluminium showed C3 class and it was classified as medium.
Abstract
The Korean Peninsula is located in the middle latitude of the northern hemisphere and has a clear 4-seasons and shows the typical temperate climate. Because of seasonal winds, it is cold and dry by a northwestern wind in the winter and it is hot and humid by a southeast wind in the summer. Also, temperature difference between the winter and the summer is large and it shows a rainy season from June to July but recently this regular trend may be greatly changed by an unusual weather phenomena. Since the Peninsula is east high west low type, the climate is complicated too. Because these geographical and climate characteristics can affect the properties of corrosion of metals and alloys, a systematic research on atmospheric corrosion in the Peninsula is required to understand and control the corrosion behavior of the industrial facilities. This paper analyzed the atmospheric corrosion factors for several environments in the Korean Peninsula and categorized the corrosivity of atmospheric corrosion of metals and alloys on the base of the related ISO standards. Annual pH values of rain showed the range of 4.5~5.5 in Korean Peninsula from 1999to 2009 and coastal area showed relatively the low pH's rain. Annual SO_2 concentrations is reduced with time and its concentrations of every major cities were below the air quality standard, but NO_2 concentration revealed a steady state and its concentration of Seoul has been over air quality standard. In 2007, SO2classes of each sites were in P_0~P_1, and chloride classes were in S0~S1, and TOW classes were in τ3~τ4. That is, SO_2 and chloride classes were low but TOW class was high in Korean Peninsula. On the base of these environmental classes, corrosivity of carbon steel, zinc, copper, aluminium can be calculated that carbon steel was in C2-C3 classes and it was classified as low-medium, and zinc, copper, and aluminium showed C3 class and it was classified as medium.
참고문헌 (26)
- K. W. Chung, , J. Corros. Sci. Soc. of Kor, 27, pp.413~ (1998)
- D. J. Choi, "Atmospheric Corrosion Characteristic of Rust Formed on Reinforcement Steels" (2006), Yonsei University
- I. Suzuki, , Corros. Eng, 30, pp.639~ (1981)
- I. Horikawa, "Rikanenhyo", pp.265~ (1984), Maruzen
- K. Sekine, , Reidokozakizutsu, 31, pp.367~ (1980)
- T. Murata, , Corros. Eng, 33, pp.598~ (1984)
- M. Ohida, , Kokai-to-Taishaku, 19, pp.75~ (1983)
- ISO CORRAG International Atmospheric Exposure Program: Summary of Results, "S. W. Dean", ASTM, ~ (2010)
- Analyses of four years of exposure data from the USA contribution to ISO CORRAG program, "S. W. Dean", ASTM, ~ (1995)
- ISO CORRAG International Atmospheric Exposure Program: A Preliminary Report, "S. W. Dean", ASTM, ~ (1988)
- M, Morcillo, "Atmospheric corrosion in Ibero-America: the MICAT project", pp.257~ (1995), ASTM special technical publication
- J. R. Vilche, , Corros. Sci, 37, pp.941~ (1995)
- S. Pintosa, , Corros. Sci, 42, pp.35~ (2000)
- J. G. Castaño, , Corros. Sci, 52, pp.216~ (2010)
- J. Benton, , Water, Air & Soil Pollutoin, 85, pp.1473~ (1995)
- J. Fuhrer, , Environ. Pollut, 1, pp.91~ (1997)
- A. U. Leuenberger-Minger, , Corros. Sci, 44, pp.675~ (2002)
- J. H. Kim, , Atmos. Environ, 37, pp.3375~ (2003)
- D. Knotkova, , Water, Air and Soil Pollutoin, 85, pp.2661~ (1995)
- J. F. Henriksen, , Protect. Met, 38, pp.579~ (2002)
- S. Yee, , J. Electrochem. Soc, 138, pp.55~ (1991)
- Y. S. Kim, "Corrosion Cost and Corrosion Map of Korea - Based on the Data from 2005 to 2010", CORROSION SCIENCE AND TECHNOLOGY, 10(2), pp.52~59 (2011), 한국부식방식학회
- 김영식, "Survey on cost of corrosion and corrosion map of Korea from 2005 to 2010", International corrosion engineering conference 2010, pp.122~ (2010), VICORRA
- "ISO 9223", 1992: Corrosion of metals and alloys – Corrosivity of atmospheres – Classification
- "ISO 9225", 1992: Corrosion of metals and alloys – Corrosivity of atmospheres – Measurement of pollution
- "2010 Environmental Statistics Yearbook", pp.53~ (2010), Ministry of Environment