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材料と環境
Vol. 61 (2012), No. 6

材料と環境 Vol. 61 (2012), No. 6

オンライン版ISSN:	1881-9664
冊子版ISSN:	0917-0480
発行機関:	Japan Society of Corrosion Engineering

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キーワードランキング

31 Mar. (Last 30 Days)

材料と環境 Vol. 61 (2012), No. 6

生物の多様性に学ぶ

伊藤公夫

pp. 235-

DOI:

10.3323/jcorr.61.235

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論文タイトル

生物の多様性に学ぶ

Bibtex

Ris

チオシアン酸アンモニウム水溶液中におけるPC鋼棒の水素吸蔵挙動

土信田知樹, 高井健一, 市場幹之

pp. 249-256

DOI:

10.3323/jcorr.61.249

抄録

A solution of ammonium thiocyanate is used in the FIP (Fédération International de la Précontrainte) test as a hydrogen charging method. Though this method is comparatively simple, fracture time in the FIP test and hydrogen content often differ among various testing institutes. However, the detailed hydrogen absorption behavior in the solution is still not clear. In this context, the effects of existing states of hydrogen, oxide film on the specimen surface, specific solution volume to specimen surface area, immersion time and solution temperature on the hydrogen absorption behavior of a steel bar for reinforcing prestressed concrete were investigated by immersing it in the solution. The amount of absorbed hydrogen increased with immersion time, reached its maximum, and then decreased with increasing immersion time. A main factor of the decrease in the amount of absorbed hydrogen was corrosion products, including Fe, O and S, formed on the specimen surface, since the amount of absorbed hydrogen increased again as a result of merely polishing the surface. This indicates that corrosion products formed on immersing specimens in a solution of ammonium thiocyanate strongly affect hydrogen absorption behavior. Whereas, variation of the solution, such as increase in pH, during immersion also affects slightly hydrogen absorption behavior.

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材料と環境 Vol. 61 (2012), No. 6

キーワードランキング

blast furnace

ferrocoke

high-strength steel alloys

isij international

slag/metal reactions in steelmaking

tramp elements

trip steel martensitic transformation

bend

continuous casting slab

crystallization

材料と環境 Vol. 61 (2012), No. 6

生物の多様性に学ぶ

SNSによる共有

チオシアン酸アンモニウム水溶液中におけるPC鋼棒の水素吸蔵挙動

SNSによる共有

論文アクセスランキング

Wettability of CaS Against Molten Iron at 1873 K

Ag–Sn合金の一方向凝固実験による包晶凝固の解析

Thermodynamic Calculation of Grain Boundary Composition in Ferritic Steels and Its Application for Controlling the Hall–Petch Coefficient

Hydrogen-induced vacancy formation process in austenitic stainless steel 304

STEM-EDSおよび3DAPによる多成分系カルシウムフェライトの還元組織観察

Perspectives on the Promising Pathways to Zero Carbon Emissions in the Steel Industry toward 2050

Chemical State Evolution of Iron Ore Sinter Investigated by Wide-Area Imaging XAFS

PREFACE

Effect of Cu on Solidification Microstructure and Solidification Process in High Carbon High Speed Steel Type Cast Alloy

焼結生産性向上のための蒸気予熱造粒技術

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