A RADIOTRACER STUDY OF DEZINCIFICATION OF BRASS SUBJECTED TO STRESS CORROSION CRACKING

J Chin Soc Corr Pro

1992, Vol. 12

Issue (2): 101-108 DOI:

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A RADIOTRACER STUDY OF DEZINCIFICATION OF BRASS SUBJECTED TO STRESS CORROSION CRACKING

Huang Xiangtai ; Zhang Meihua ; Zhao Zhijun; Luo Xianfing and Yu Jian (Shanghai Research Institute of Materials)

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Abstract Radiotracer technique was used to study the dezincifieation behaviour of 70/30 brass subjected to stress corrosion cracking (SCC) in 1M NaNO_2, at —0.1V (SCE) under dynamic slow strain-test condition. The results showed that localized anodic dissolution is the essential cause of SCC, while considerable dezincification enhanced the suseptibility to cracking. The maximum dezincification coefficient was obtained during the stage of steady crack propagation before the stress reached the ultimate tensile level (σ_(uts)). After that, the relative increase of dissolved copper gave rise to correspondingly lower dezincification coefficient. The strain rate at the crack tip for the maximum dezincification coefficient was approximately 4 times as high as initially applied strain rate. Calculation based on a volume diffusion model for preferential dissolution indicated that zinc diffusion coefficient in the SCC processes could reach more that 10~(-11)cm~2/s. Finally, the mechanism of dezincification related to the SCC of brass in nitrate solution is discussed.

Received: 25 April 1992

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Huang Xiangtai ; Zhang Meihua ; Zhao Zhijun; Luo Xianfing and Yu Jian (Shanghai Research Institute of Materials). A RADIOTRACER STUDY OF DEZINCIFICATION OF BRASS SUBJECTED TO STRESS CORROSION CRACKING. J Chin Soc Corr Pro, 1992, 12(2): 101-108.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1992/V12/I2/101

[1] Pchelnikov, A. P., Sitnikov, A. D., Marshakov, I. K., and Loser, V. V., Electrochimica Acta, 26, 591(1981) .
[2] 常用放射性核素衰变纲图,原子能出版社,1982年
[3] Yu J., and Parkins, R. N., Corrosion Science, 27, 159(1987)
[4] 俞健,罗贤竟.赵志军.中国腐蚀民防护学报,11(1) ,83(1991)
[5] Yu. J., Holroyd, N. J. M., and Parkins, R. N., Environment Sensitive Fractare, Eds. Dean, S. W., Pugh, E. N., and Ugiansky, G. M., ASTM STP821, P. 288, (1984)
[6] Yu J., Parking, R. N., Xu Y., Thompson, G., and Wood, G. C., Corrosion Science, 27, 141(1987)
[7] Namboodhiri, T. K. G., and Tripathi, R. S., Corrosion Science, 26, 745, (1986)
[8] Beavers, T. A., and Pugh, E. N., Metall Trans., 11A, 809(1980)
[9] Pugh, E. N., Atomistic of fracture, Eds. Lantanision, R. M., and Pickens, J. R. , P997, Plenum Press, New York(1983)
[10] Pickering, H. W., and Wagker, C., J. Electrochem. Soc., 114, 698(1967)
[11] Holliday. J. E., and Pickering, H. W., J. Electrochem. Soc., 120, 470(1973)
[12] Skwratnik. Ya. B., Elektrokhimiya, 13, 1122(1967)
[13] Tripathi, R. S., and Namboodhiri, T. K. G., Proc. Int. Cord. on Corrosion Science and Technologg(ICMS-85) , Calcutta, February(1985)

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