English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In order to clarify the corrosion resistance of stainless steel in soil, field corrosion tests for SUS 430, 304, and 316 were carried out at several sites for 1221 months together with three companys' laboratories. And also, round robin test for water extraction analysis of the soil was carried out to understand the chemical characterization. The kinds fo soils for their tests are sand, Kanto loam, Ando soil and clay, and the ranges of pH and C1 ion concentration of the extracted water are. pH 5.5-8.2 and Cl4-615ppm, respectively. The corrosion potentials, Ecorr, of the specimens in soil were in the region of -0.6N+0.5V (v. s. SCE), and Ecorr -time curves exhibited much different patterns depend on the groundwater level and the depth of the specimens. At a sandy land (Kinuura, Cl615ppm), all specimens (square type and belt type) of SUS 430 and a vertically buried belt type specimen of SUS 304 were suffered from localized corrosion with crevice corrosion. The corrosion test results suggest that a change of Ecorr relates to the change of the groundwater level and the underground corrosion process of the stainless steel involves oxygen differential cell reaction.

Variation of Corrosion Potential and Corrosion Behavior of Stainless Steels in Some Underground Corrosion Test Conditions