CREVICE CORROSION TESTING METHOD AND CREVICE CORROSION TESTING DEVICE

Japanese Patent JP2015132581

A

PROBLEM TO BE SOLVED: To provide a crevice corrosion testing method and a crevice corrosion testing device capable of evaluating a temporal change of a corrosion damage level due to a crevice corrosion such as a depth, a mass, or a form of the crevice corrosion.SOLUTION: A rod 1 for crevice corrosion observation is fitted from one side surface 2a of a testing tank 2. Inside the testing tank 2, a crevice part is formed between one end 1a of the rod 1 for crevice corrosion observation and a metal sample 5. Outside the testing tank 2, crevice corrosion observation means 7 is provided. The rod 1 for crevice corrosion observation penetrates a counter electrode 11 installed in the testing tank 2 while facing the metal sample 5. The counter electrode 11 and the metal sample 5 are preferably connected to potential control measurement means provided outside of the testing tank 2. Through the rod 1 for crevice corrosion observation, there is provided a crevice corrosion testing method for measuring an area of the crevice corrosion part, which may be combined with an electrochemical measurement.

MATSUHASHI AKIRA
MATSUOKA KAZUMI
KAJIMURA HARUHIKO
NOSE KIYOMI

JP2014005325A

July 23, 2015

January 15, 2014

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NIPPON STEEL & SUMIKIN SST

G01N17/00; G01N27/26

JPS6292455U	1987-06-12
JPH02107061U	1990-08-24
JP2012154783A	2012-08-16
JPS51147386A	1976-12-17
JPH07103930A	1995-04-21
JPH05215707A	1993-08-24

Masatake Shiga
Tadashi Takahashi
Sumio Tanai
Tomoo Katsumata

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