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材料と環境
Vol. 69 (2020), No. 1

材料と環境 Vol. 69 (2020), No. 1

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

02 Apr. (Last 30 Days)

材料と環境 Vol. 69 (2020), No. 1

合同研究委員会

川上洋司

pp. 1-2

DOI:

10.3323/jcorr.69.1

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Bibtex

Ris

ボルタンメトリーによる黄銅を含む銅材料の腐食生成物の成長機構の解析

中山茂吉, 富永愛子, 藤岡寛之, 能登谷武紀, 大堺利行

pp. 10-16

DOI:

10.3323/jcorr.69.10

抄録

Corrosion products on the brass surface were characterized by voltammetry with a high alkaline electrolyte solution （6 M KOH＋1 M LiOH）. In addition to copper oxides （Cu₂O and CuO）, zinc oxide （ZnO） was also confirmed on corroded brass surfaces. Depending on corrosion conditions, the amounts of the respective oxides formed on brass surfaces were varied. In the corrosion test in which brass is immersed in a NaCl solution （by assuming dezincification corrosion）, Cu₂O was selectively formed, and then grew significantly in NaCl solution at the concentration of 0.1％ or less. However, when the concentration exceeded 1％, the formation of ZnO was newly confirmed. It was suggested that the formation and growth behaviors of the oxides on brass should be affected by the diffusion rate of zinc dependent on the concentration of NaCl solution.

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ボルタンメトリーによる黄銅を含む銅材料の腐食生成物の成長機構の解析

Bibtex

Ris

冷却水銅配管の腐食に及ぼす堆積物の影響

山中秀文, 永井智之, 野中英正, 土谷博昭, 藤本慎司

pp. 17-25

DOI:

10.3323/jcorr.69.17

抄録

In the present study, possible effect of deposits on the corrosion of copper pipes in concentrated cooling water has been examined. It was considered that during the localized corrosion of copper pipes, the cathodic process took place on the intact sites of carbonaceous films, whereas the anodic process occurred on their defective sites. The deposits covering the defects of carbonaceous films significantly affected the corrosion of copper pipes. In particular, the presence of iron rust strongly enhanced the anodic reaction, resulting in severe corrosion. The enhanced anodic reaction was attributed to the suppressed formation of a protective oxide film most likely due to the lower pH of the areas located beneath the iron rust. It was suggested that the pretreatment to form a protective copper oxide film onto the copper pipe surface inhibited the corrosion process beneath the iron rust deposit.

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冷却水銅配管の腐食に及ぼす堆積物の影響

Bibtex

Ris

論文アクセスランキング

02 Apr. (Last 30 Days)

Wettability of CaS Against Molten Iron at 1873 K

ISIJ International Vol.65(2025), No.2
Ag–Sn合金の一方向凝固実験による包晶凝固の解析

鉄と鋼早期公開
Perspectives on the Promising Pathways to Zero Carbon Emissions in the Steel Industry toward 2050

ISIJ International Vol.65(2025), No.2
Thermodynamic Calculation of Grain Boundary Composition in Ferritic Steels and Its Application for Controlling the Hall–Petch Coefficient

ISIJ International 早期公開
Hydrogen-induced vacancy formation process in austenitic stainless steel 304

ISIJ International 早期公開
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

鉄と鋼早期公開
Effects of interface anisotropy on the solidification morphology of zinc alloys and development of data assimilation for their estimation

ISIJ International 早期公開
Chemical State Evolution of Iron Ore Sinter Investigated by Wide-Area Imaging XAFS

ISIJ International 早期公開
PREFACE

MATERIALS TRANSACTIONS Vol.54(2013), No.6
Bend Failure Mechanism of Zinc Coated Advanced High Strength Steel

ISIJ International Vol.58(2018), No.8

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材料と環境 Vol. 69 (2020), No. 1

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. 69 (2020), No. 1

合同研究委員会

SNSによる共有

ボルタンメトリーによる黄銅を含む銅材料の腐食生成物の成長機構の解析

SNSによる共有

冷却水銅配管の腐食に及ぼす堆積物の影響

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

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

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

Effects of interface anisotropy on the solidification morphology of zinc alloys and development of data assimilation for their estimation

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

PREFACE

Bend Failure Mechanism of Zinc Coated Advanced High Strength Steel

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