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| EFFECT OF THERMAL-SPRAYED ZINC AND ALUMINIUM ON THE STRESS CORROSION CRACKING OF 921 HIGH-STRENGTH STEEL FOR SHIP BUILDING |
| Zhang Yue Wang Tiquan Yu Hongying (Wuhan Research Institute of Material Protection) |
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Abstract The effect of thermal-sprayed zinc(TSZ)and aluminium(TSA) on stress corrosion cracking susceptibility of 921 high-strength steel in seawater was studied by slow strain rate technique,with the porosity and local peeling of TSZ or TSA simulated,The test results showed that the potential of the steel coupled to zinc(about-1040mV, SCE)was in the potential range of remarkable hydrogen embrittlem- ent(HE)of the steel in artificial seawater.It would be very dang- erous to have TSZ applied on 921 steel as it might cause HE of the latter.On the other hand,the potential of the steel coupled to alum- inium(about-800mV,SCE)is in the safe and usable range with TSA providing good cathodic protection to the stressed steel component,
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Received: 25 February 1990
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Cite this article:
Zhang Yue Wang Tiquan Yu Hongying (Wuhan Research Institute of Material Protection). EFFECT OF THERMAL-SPRAYED ZINC AND ALUMINIUM ON THE STRESS CORROSION CRACKING OF 921 HIGH-STRENGTH STEEL FOR SHIP BUILDING. J Chin Soc Corr Pro, 1990, 10(1): 79-84.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1990/V10/I1/79
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