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Zairyo-to-Kankyo
Vol. 68 (2019), No. 4

Zairyo-to-Kankyo Vol. 68 (2019), No. 4

ONLINE ISSN:	1881-9664
PRINT ISSN:	0917-0480
Publisher:	Japan Society of Corrosion Engineering

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Vol. 72 (2023)
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Keyword Ranking

27 Sep. (Last 30 Days)

Zairyo-to-Kankyo Vol. 68 (2019), No. 4

Inaugural Message from New President

Atsushi Nishikata

pp. 73-74

DOI:

10.3323/jcorr.68.73

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Article Title

Inaugural Message from New President

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Ris

Estimation of Hydrogen Embrittlement Process by Statistical Analysis of Fracture Time

Takuya Kamisho, Ryuta Ishii, Yosuke Takeuchi, Masamitsu Watanabe, Masayuki Tsuda

pp. 88-91

DOI:

10.3323/jcorr.68.88

Abstract

It may be possible to estimate the hydrogen embrittlement process by statistically analyzing the fracture time of high strength steel. In this study, we derived transition probability λ（t） representing the degradation rate by statistically analyzing the fracture time of high strength steel using a stochastic process model. The analysis revealed that λ（t） decreased rapidly after the start of the test and then became a constant value. This behavior differs from general hydrogen entry behavior, suggesting that the fracture time of high strength steel is not uniquely determined only by the amount of hydrogen in the specimen.

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Article Title

Estimation of Hydrogen Embrittlement Process by Statistical Analysis of Fracture Time

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Evaluation of Corrosion Resistance for Electrodeposition Coating Steel with a High Voltage Supplied Method

Teruaki Asada, Tsutomu Shigenaga, Yoshinori Isomoto

pp. 92-97

DOI:

10.3323/jcorr.68.92

Abstract

A new time accelerated testing method of corrosion resistance for electrodeposition coating steel was proposed in this study. This method is to measure a cut off voltage on environmental corrosion factors obtained by linearly increasing voltage of 1 V･s^－1 within a few minute working time, in order to shorten an evaluation span of coating steels. The cut off voltage was measured for the cation electrodeposition coating steels of different coating thickness and different baking conditions after the coating process. As a result, the cut off voltage increased with the increase in thickness and crosslink density of the coating layer. The cut off voltage was well related to the blister initiation cycle number obtained by a cyclic corrosion test. The effectiveness of this method was then recognized. And ion permeability tests and FTIR analyses intimated penetration of ions and adsorption processes into the electrodeposition coating layer.

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Evaluation of Corrosion Resistance for Electrodeposition Coating Steel with a High Voltage Supplied Method

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Effect of Film Forming Amine on Flow Accelerated Corrosion of Carbon Steel in Boiler Feed Water of Power Plants

Shota Yamazaki, Masaki Yoshida, Yusuke Suetake, Kazuo Marugame, Li-Bin Niu

pp. 98-104

DOI:

10.3323/jcorr.68.98

Abstract

Flow accelerated corrosion（FAC） tests on carbon steel in boiler feed water of power plants were carried out. The FAC of carbon steel was remarkably inhibited by adding film forming amines of Dodecylamine （DDA） and Octadecylamine （ODA） into the boiler water. Furthermore, the FAC inhibition mechanism of the film forming amines was investigated by polarization tests and zeta potential measurements. It was suggested that the film forming amines adsorbed on the steel surface and on the oxide film formed, inhibiting the corrosion reactions on the steel and protecting the oxide film, thereby the FAC was inhibited.

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Article Title

Effect of Film Forming Amine on Flow Accelerated Corrosion of Carbon Steel in Boiler Feed Water of Power Plants

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Article Access Ranking

27 Sep. (Last 30 Days)

Deformation-induced martensitic transformation at tensile and compressive deformations of bainitic steels with different carbon contents

ISIJ International Advance Publication
Alloying effects on the microstructure of Fe-1mass%M binary alloys treated by austenitic nitriding and quenching treatment

ISIJ International Advance Publication
Hydrogen effects on fracture resistances of bulk cementite evaluated by in-situ microbending test during cathodic hydrogen charging

ISIJ International Advance Publication
Relationship between slag phase and softening & melting properties of cohesive zone

ISIJ International Advance Publication
Numerical simulation of bubble breakup and coalescence behavior in gas-stirred ladle

ISIJ International Advance Publication
Effect of slag phase on dephosphorization in BOF

ISIJ International Advance Publication
Overview of hydrogen effects on γ−ε martensitic transformation in steels

ISIJ International Advance Publication
Examples of Fractured Steel Parts during Actual Usage due to Hydrogen Embrittlement and Consideration Regarding the Behavior of Hydrogen at the Prior Austenite Grain Boundary

ISIJ International Advance Publication
Production and Technology of Iron and Steel in Japan during 1988

ISIJ International Vol.29(1989), No.4
Surface and Grain Boundary Segregation on and in Iron and Steels

ISIJ International Vol.29(1989), No.7

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Zairyo-to-Kankyo Vol. 68 (2019), No. 4

Keyword Ranking

古代製鉄

鉄

blast furnace

smelting furnaces

jang-sik park

korea

three kingdoms period

archaeology

deformation of inclusion during rolling

dp steel hydrogen embrittlement

Zairyo-to-Kankyo Vol. 68 (2019), No. 4

Inaugural Message from New President

Share it with SNS

Estimation of Hydrogen Embrittlement Process by Statistical Analysis of Fracture Time

Share it with SNS

Evaluation of Corrosion Resistance for Electrodeposition Coating Steel with a High Voltage Supplied Method

Share it with SNS

Effect of Film Forming Amine on Flow Accelerated Corrosion of Carbon Steel in Boiler Feed Water of Power Plants

Share it with SNS

Article Access Ranking

Deformation-induced martensitic transformation at tensile and compressive deformations of bainitic steels with different carbon contents

Alloying effects on the microstructure of Fe-1mass%M binary alloys treated by austenitic nitriding and quenching treatment

Hydrogen effects on fracture resistances of bulk cementite evaluated by in-situ microbending test during cathodic hydrogen charging

Relationship between slag phase and softening & melting properties of cohesive zone

Numerical simulation of bubble breakup and coalescence behavior in gas-stirred ladle

Effect of slag phase on dephosphorization in BOF

Overview of hydrogen effects on γ−ε martensitic transformation in steels

Examples of Fractured Steel Parts during Actual Usage due to Hydrogen Embrittlement and Consideration Regarding the Behavior of Hydrogen at the Prior Austenite Grain Boundary

Production and Technology of Iron and Steel in Japan during 1988

Surface and Grain Boundary Segregation on and in Iron and Steels

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