Investigation into composition and deposition of artificially produced marine aerosols on austenitic stainless steels

被引：7

作者：

Gunther, M. ^{[1
]}

Stevens, N. P. C. ^{[1
,2
]}

McFiggans, G. ^{[3
]}

Cook, A. B. ^{[1
,2
]}

机构：

[1] Univ Manchester, Sch Mat, MPC, Manchester M13 9PL, Lancs, England

[2] Univ Manchester, Sch Mat, Ctr Corros & Protect, Manchester M13 9PL, Lancs, England

[3] Univ Manchester, Sch Earth Atmospher & Environm Sci, Manchester M13 9PL, Lancs, England

来源：

CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2014年 / 49卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

Stress corrosion cracking; ILW; Stainless steel; Chloride; Organic; Marine aerosol; STRESS-CORROSION CRACKING;

D O I：

10.1179/1743278214Y.0000000179

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study focused on the effect of organic species on the occurrence of atmospheric-induced stress corrosion cracking (AISCC) in intermediate level waste (ILW) container materials under 'wetted' deposits of artificial sea-water (SW). Artificial SW solutions enriched with one of two bio-exudates - with organic carbon concentrations of between 92 and 451 mu M - were employed to investigate changes in interfacial behaviour, associated with organic content, at the liquid-solid boundary on type 304L stainless steel (SS). These effects were determined in terms of contact angle and deposit diameter. On evaporation organically-enriched SW droplets deposited on 304L SS maintain a constant contact diameter on exposure to a relative humidity (RH) of 70 +/- 1%. By contrast deposits produced from artificial SW alone contract radially inwards. The bio-exudate that remained on the SS surface following the cleaning of deposits formed from organically enriched SW was visualised via cyanoacrylate fuming. This technique confirmed that bio-exudate adheres to 304L SS after removal of the inorganic components. The impact of organic enrichment on AISCC was investigated using droplets of test solutions on 304L U-bend specimens exposed to environmental conditions of 50.0 +/- 0.5 degrees C and 30 +/- 1% RH.

引用

页码：509 / 513

页数：5

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