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| THE ANALYSIS FOR FAILURE Al SACRIFICIAL ANODE USED IN SEA BED PIPELINES |
| Yi Li;Yongguang Li |
| 广州华南理工大学工控系 |
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Abstract This paper studied the present situation of WP alum inum alloy sacrificial anodes of sea bed oil-carrying pipelines in the oil field of south China sea.According to the results of potentiostatic test of anode,mic roanalysis of anode surface dissolution morphology,X-ray diffraction of anode co rrosion products,chemical analysis and SEM & EDS analysis,WP anode did not fit f or the long-term protection of ocean bottom oil-carrying pipelines.Moreover,it i s confirmed that the invalidity ahead of time mainly results from the structure defects.Solute segregation in crystal boundary results in intergr anular corrosion very seriously.
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Received: 04 November 2000
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Corresponding Authors:
Yi Li
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(蔡钦友.铝合金牺牲阳极的应用[J].腐蚀与防护,1985,6(4):22) |
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