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1、Corrosion performance of material,2,2,Grote, Karl-Heinrich. Corrosion. Springer Handbook of Mechanical Engineering. Springer, 01 January 2009. P141-157. Derby, Brian. Corrosion and protection. Springer, 01 January 2004. David A. Vermilyea, Corrosion, Materials Science and Engineering, Volume 25, Sep
2、temberOctober 1976. P29-34. Qiuxia Sun. Corrosion and protection of materials. Beijing: metallurgical industry press, March 2001.,References,3,1.1 Significance of Corrosion Study,4,1.1 Significance of Corrosion Study,Table1.1 Major industrial countries corrosion damage,5,1.2 Definition of Metal Corr
3、osion,Corrosion material degradation through reaction with its environment,Corrosion of metaldeterioration of a metal, because of a reaction with its environment Corrosion of materials is a kind of spontaneous and irreversible process, is the form of matter by the high-energy state to the low-energy
4、 state changes.,6,1.3 Development of Corrosion Study,In Ancient Times In the Shang dynasty，tin was used to improve the corrosion resistance of copper In theSpring and Autumn Period &the Warring States，arrow-heads with Chromium oxide layer,In the Middle of the 18th Century In 1800, Volta found the ga
5、lvanic battery principle In 1830, De La Rive proposed the concept of micro-batteries for metal corrosion In 1833, Faraday put forward Faradays law of electrolysis In 1910, anticorrosive coatings came out,7,1.3 Development of Corrosion Study,Figure1.3 Anticorrosive methods in ancient China,Figure1.4
6、Alessandro Volta and his voltaic cell,Alessandro Volta (1745 1827, Italian),8,1.3 Development of Corrosion Study,In the 1920s-1930s the formation of corrosion science The founder of the modern corrosion disciplines: British, U.R.Evans, Putting forwardElectrochemical Basic Regularity of Metal Corrosi
7、on,From the Middle of the 20th Century to the Present The formation of corrosion engineering & anticorrosion systems The development of Engineering Surface Analysis Technology, reveals the microscopic mechanism of corrosion and the nature The introduction of ion beam, laser beam and plasma technolog
8、y, new method of surface protection,9,Corrosion Study in China 1950s, Corrosion and protection group was listed in the national development planning. 1970s, Establishment of the Corrosion and protection of academic committee of China 1980s, Establishment of the Institute of Corrosion and Protection
9、of Chinese Academy of Sciences 2005, 16th International Corrosion Congress(ICC) was held in Beijing,1.3 Development of Corrosion Study,10,1.4 Main Academic Conference,Table1.2 Main Academic Conference and Holding Period,11,1.5 MainProfessional Periodical orJournals,*NACE-National Association of Corr
10、osion Engineer,Table1.3 MainProfessional Periodical orJournals in China and Foreign Country,12,1.6 Main Groups of Corrosion of Metallic Materials,13,Classification according to corrosion environment Wet corrosion, where the corrosive environment is water with dissolved species. The liquid is an elec
11、trolyte and the process is typically electrochemical. Corrosion in other fluids such as fused salts and molten metals. Dry corrosion, where the corrosive environment is a dry gas. Dry corrosion is also frequently called chemical corrosion and the best-known example is high-temperature corrosion.,1.6
12、 Main Groups of Corrosion of Metallic Materials,14,Classification according to damage type of corrosion Concentration-cell corrosion also known as “crevice corrosion,” “gasket corrosion,” and “deposit corrosion”. Because it commonly occurs in localized areas where small volumes of stagnant solution
13、exist. Pitting corrosion highly localized form of attack on a metal surface, characterized by the fact that the depth of penetration is much greater than the diameter of the area affected. Pitting is one of the most destructive forms of corrosion Intergranular corrosion a localized condition that oc
14、curs at, or in narrow zones immediately adjacent to, the grain boundaries of an alloy.,1.6 Main Groups of Corrosion of Metallic Materials,(a)(b) (c)(d),(a) Concentration-cell corrosion (b) Intergranular corrosion (c) Pitting corrosion (d) galvanic corrosion Figure1.5 Different Forms of Corrosion,1.6
15、 Main Groups of Corrosion of Metallic Materials,16,Classification according to corrosion morphology Stress corrosion cracking describes the phenomenon that can occur when many alloys are subjected to static, surface tensile stresses and are exposed to certain corrosive environments. Dealloying a cor
16、rosion process in which one element is preferentially removed from an alloy. Erosion corrosion repetitive formation (a corrosion process) and destruction (a mechanical process) of the metals protective surface film. This typically occurs in a moving liquid. filiform corrosion、 galvanic corrosion，etc.,1.6 Main Groups of Corrosion of Metallic Materials,
