The anaerobic corrosion of carbon steel in alkaline media - Phase 2 results

被引：8

作者：

Smart, N. R. ^{[1
]}

Rance, A. P. ^{[1
]}

Fennell, P. A. H. ^{[1
]}

Kursten, B. ^{[2
]}

机构：

[1] AMEC, Bldg 150, Didcot OX11 0QB, Oxon, England

[2] CEN SCK, B-2400 Mol, Belgium

来源：

INTERNATIONAL WORKSHOP NUCPERF 2012: LONG-TERM PERFORMANCE OF CEMENTITIOUS BARRIERS AND REINFORCED CONCRETE IN NUCLEAR POWER PLANT AND RADIOACTIVE WASTE STORAGE AND DISPOSAL (RILEM EVENT TC 226-CNM AND EFC EVENT 351) | 2013年 / 56卷

关键词：

ARTIFICIAL GROUNDWATERS; CAST-IRON; IRRADIATION;

D O I：

10.1051/epjconf/20135606003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In the Belgian Supercontainer concept a carbon steel overpack will surround high-level waste and spent fuel containers and be encased in a cementitious buffer material. A programme of research was carried out to investigate and measure the rate of anaerobic corrosion of carbon steel in an artificial alkaline porewater that simulates the aqueous phase in the cementitious buffer material. The corrosion rates were measured by monitoring hydrogen evolution using a manometric gas cell technique and by applying electrochemical methods. Phase 2 of the programme has repeated and extended previous Phase 1 measurements of the effects of radiation, temperature and chloride concentration of the anaerobic corrosion rate. This paper provides an update on the results from Phase 2 of the programme. The results confirm previous conclusions that the long-term corrosion rate of carbon steel in alkaline simulated porewater is determined by the formation of a thin barrier layer and a thicker outer layer composed of magnetite. Anaerobic corrosion of steel in cement requires an external supply of water.

引用

页数：9

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