|
|
|
Abstract The hot corrosion behavior of seven superalloys of Udimet 500 system with different Co amounts was studied by burner-rig test at 750℃,800℃,850℃ in an atmosphere containing 100 ppm salt. Total time of test was 62,5 hours. Experimental results showed that the corrosion resistance of these alloys were markedly improved by cobalt. The microstructures were studied with optical microscope, X-ray diffraction,electron probe and glow discharge spectro scopy analysis. It was observed that Co was beneficial to form a cotinuous protective oxide film on the surfaces of alloys with improved adhesion during the incubation period of hot corrosion. Moreover, Co in the superalloys can effectively retard the diffusion of sulphur in these alloys.
|
|
Received: 25 August 1981
|
Cite this article:
Guan Delin Iu Zhihan~* Xiao Yaotian Shi Changxu (Institute of Metal Research; Academia Sinica) *The 25th Institute; The 7th Research Institute. Sixth Ministry of Machine Building.. The Effect of Cobalt on the Hot Corrosion Behavior of Ni-Base Superalloys. J Chin Soc Corr Pro, 1981, 1(4): 49-59.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1981/V1/I4/49
|
[1] Bergman, P. A., Corrosion, No. 23, 72(1967)
[2] Moller, W., in Deposition and Corrosion in Gas Turbines, 1． (1973)
[3] Seybolt, A. U., Trans. AMS-AIME, No.242, 1955(1968)
[4] Kaufman, M., Trans. ASM, No. 62, 590(1967)
[5] Horman, P. L. and Haston, J. D., in Deposition and Corrosion in Gas Turbines 260 (1973)
[6] Felix, R. C., in Deposition and Corrosion in Gas Turbines, 331 (1973)
[7] Donachie, M. J. Jr., Sprague, R. A., Russell, R. N., Ball, K. G. and Bradley, E. F., Hot Corrosion Problems Associated with Gas Turbines, ASTM STP421, 85(1967)
[8] Beltran, A. M., Shores, D. A., The Superalloys, 317 (1972)
[9] 石声泰,浅谈高温合金的高温腐蚀问题,材料保护,No.4,1(1978)
[10] 高温合金的热腐蚀,中国科学院金属研究所内部资料。
[11] Heslop, J., Ph. D., B. Sc., Cobalt, No. 24,128(1964)
[12] Symonds, C. H., J. of the Australian Inst. of Met., No. 1, 1． 16(1971)
[13] Michel Urabain, Cobalt, No. 18(1963)
[14] Cook, R. M. and Shew, S. W. K., Rev. de Met., Avril, 63~(?) anneee, 329(1966)
[15] Wheatfall, W. L., Doering, H. and Danek, J. Jr., Hot Corrosion Problems Associated with Gas Turbines, ASTM STP421,206(1967)
[16] Billingham, J. and Lauridsen, J., Metallography, No. 1 6, 85(1973)
[17] Billingham, J. and Lauridsen, J., Lawn, R. E. and Dewey, N. A. P., in Deposition and Corrosion in Gas Turbines, 229(1973)
[18] Goebel, J. A., Pettit, F. S. and Goward, G. W., Metall Trans., 4, 261(1973)) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
