- TOP
- Zairyo-to-Kankyo
- Vol. 69 (2020), No. 1
Zairyo-to-Kankyo Vol. 69 (2020), No. 1
Backnumber
-
Vol. 73 (2024)
-
Vol. 72 (2023)
-
Vol. 71 (2022)
-
Vol. 70 (2021)
-
Vol. 69 (2020)
-
Vol. 68 (2019)
-
Vol. 67 (2018)
-
Vol. 66 (2017)
-
Vol. 65 (2016)
-
Vol. 64 (2015)
-
Vol. 63 (2014)
-
Vol. 62 (2013)
-
Vol. 61 (2012)
-
Vol. 60 (2011)
-
Vol. 59 (2010)
-
Vol. 58 (2009)
-
Vol. 57 (2008)
-
Vol. 56 (2007)
-
Vol. 55 (2006)
-
Vol. 54 (2005)
-
Vol. 53 (2004)
-
Vol. 52 (2003)
-
Vol. 51 (2002)
-
Vol. 50 (2001)
-
Vol. 49 (2000)
-
Vol. 48 (1999)
-
Vol. 47 (1998)
-
Vol. 46 (1997)
-
Vol. 45 (1996)
-
Vol. 44 (1995)
-
Vol. 43 (1994)
-
Vol. 42 (1993)
-
Vol. 41 (1992)
-
Vol. 40 (1991)
Keyword Ranking
03 May. (Last 30 Days)
Zairyo-to-Kankyo Vol. 69 (2020), No. 1
Analysis on the Growth Mechanism of Corrosion Products of Copper Materials Containing Brass by Voltammetry
Shigeyoshi Nakayama, Aiko Tominaga, Hiroyuki Fujioka, Takenori Notoya, Toshiyuki Osakai
pp. 10-16
DOI:
10.3323/jcorr.69.10Abstract
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.
Effect of Deposits on Corrosion of Copper Tubes in a Circulating Cooling Water System
Hidefumi Yamanaka, Tomoyuki Nagai, Hidemasa Nonaka, Hiroaki Tsuchiya, Shinji Fujimoto
pp. 17-25
DOI:
10.3323/jcorr.69.17Abstract
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.
Article Access Ranking
03 May. (Last 30 Days)
-
Effect of Wettability on Droplet Agglomeration in Two Immiscible Liquids
ISIJ International Advance Publication
-
Interactions between interstitial and substitutional elements of solute diatomic and triatomic clusters in α-Fe from first-principles calculations
ISIJ International Advance Publication
-
Thermodynamic Analysis on Slag/Metal Reactions in Steelmaking Process Using Direct Reduced Iron and Steel Scraps
ISIJ International Vol.64(2024), No.6
-
Collaborative optimization model of blast furnace raw materials and operating parameters based on intelligent calculation
ISIJ International Advance Publication
-
Molecular dynamics of solidification
ISIJ International Advance Publication
-
Production of silicon by microwave heating
ISIJ International Advance Publication
-
Development of heat-of-fusion measurement for metals using a closed-type aerodynamic levitator
ISIJ International Advance Publication
-
Effects of Retained Austenite upon Softening during Low-temperature Tempering in Martensitic Carbon Steels
Tetsu-to-Hagané Advance Publication
-
-
Activity of Chromium Oxide in CaO–SiO2–MgO–Al2O3–MnO–CaF2–CrOx Slag for Chromium Reducing Process
ISIJ International Vol.64(2024), No.6
You can use this feature after you logged into the site.
Please click the button below.