Characterization of rust on weathering steel by gas adsorption

被引：32

作者：

Ishikawa, T ^{[1
]}

Kumagai, M ^{[1
]}

Yasukawa, A ^{[1
]}

Kandori, K ^{[1
]}

机构：

[1] Osaka Univ Educ, Sch Chem, Osaka 5828582, Japan

来源：

CORROSION | 2001年 / 57卷 / 04期

关键词：

adsorption isotherm; micropore; nitrogen gas adsorption; pore size distribution; sodium chloride; specific surface area; sulfur dioxide; t-plot; water adsorption; weathering steel; iron oxides;

D O I：

10.5006/1.3290358

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The textures of the rusts formed by exposing various kinds of weathering steel to different environments for 17 years were investigated by the adsorption of N-2 and H2O. The specific surface area determined by N-2 adsorption decreased with the increase of sodium chloride (NaCl) content in the exposure situations, indicating that the rusts formed at the coastal site were agglomerates of large particles and had large pores. This result is consistent with the fast corrosion rate on the coast. The high surface area obtained by H2O adsorption on the rusts generated on the coast can be attributed to the tunnels of akaganeite (beta-FeOOH) crystals accessible to H2O but not to N-2.

引用

页码：346 / 352

页数：7

共 17 条

[1] On a theory of the van der Waals adsorption of gases [J].