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Basic chemistry for radioactive waste management. Study on the corrosion of materials for radwaste containment

Technical Report:

Abstract

To study the mechanism of the corrosion process and to control the corrosion process in relation to the radwaste management, passive films on the metal surfaces and corrosion of iron, carbon steel, and titanium have been studied. Total charges for passivation, breakdown and repassivation process were measured and compared to understand the characteristics of passive films including the growth rate and the stability of the passive films. The bigger the charges for passivation process, the more metal dissolution and corrosion attack were observed. Increasing the concentration of chloride ions, the rate of coverage of exposed metal became slower and the stability of passive fimes were weakened. Corrosion measurements of iron, carbon steel, and titanium were performed. Iron and carbon steels were proven to become passivated in the carbonate media, but pitting corrosion occurred in the presence of chloride ions. From the impedance data, we conclude that an adsorptive reaction forming Fe(OH){sub 2} occurs in the dissolution of iron and carbon steel. In 0.1 M NaHC0{sub 3} solution, iron and carbon steel showed a corrosion rate of 43-61 {mu}m/yr and 18 {mu}m/yr, respectively. In ground water, iron showed a corrosion rate of 5.8{mu}m/yr and carbon steel showed an even smaller corrosion  More>>
Authors:
Eom, Tae Yoon; Jung, Ki Suk; Choi, In Kyu; Park, Su Gil; Yeon, Jei Won [1] 
  1. Korea Atomic Energy Research Inst., Daeduk (Korea, Republic of)
Publication Date:
Mar 01, 1991
Product Type:
Technical Report
Report Number:
KAERI-II/RR-13/90
Reference Number:
SCA: 360105; 052001; PA: AIX-23:014203; SN: 92000646654
Resource Relation:
Other Information: PBD: Mar 1991
Subject:
36 MATERIALS SCIENCE; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CONTAINERS; CORROSION; RADIOACTIVE WASTE MANAGEMENT; RADIOACTIVE WASTES; CARBON STEELS; FILMS; GROUND WATER; IRON; TITANIUM; 360105; 052001; CORROSION AND EROSION; WASTE PROCESSING
OSTI ID:
10113881
Research Organizations:
Korea Atomic Energy Research Inst., Daeduk (Korea, Republic of)
Country of Origin:
Korea, Republic of
Language:
Korean
Other Identifying Numbers:
Other: ON: DE92614822; TRN: KR9100142014203
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
68 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Eom, Tae Yoon, Jung, Ki Suk, Choi, In Kyu, Park, Su Gil, and Yeon, Jei Won. Basic chemistry for radioactive waste management. Study on the corrosion of materials for radwaste containment. Korea, Republic of: N. p., 1991. Web.
Eom, Tae Yoon, Jung, Ki Suk, Choi, In Kyu, Park, Su Gil, & Yeon, Jei Won. Basic chemistry for radioactive waste management. Study on the corrosion of materials for radwaste containment. Korea, Republic of.
Eom, Tae Yoon, Jung, Ki Suk, Choi, In Kyu, Park, Su Gil, and Yeon, Jei Won. 1991. "Basic chemistry for radioactive waste management. Study on the corrosion of materials for radwaste containment." Korea, Republic of.
@misc{etde_10113881,
title = {Basic chemistry for radioactive waste management. Study on the corrosion of materials for radwaste containment}
author = {Eom, Tae Yoon, Jung, Ki Suk, Choi, In Kyu, Park, Su Gil, and Yeon, Jei Won}
abstractNote = {To study the mechanism of the corrosion process and to control the corrosion process in relation to the radwaste management, passive films on the metal surfaces and corrosion of iron, carbon steel, and titanium have been studied. Total charges for passivation, breakdown and repassivation process were measured and compared to understand the characteristics of passive films including the growth rate and the stability of the passive films. The bigger the charges for passivation process, the more metal dissolution and corrosion attack were observed. Increasing the concentration of chloride ions, the rate of coverage of exposed metal became slower and the stability of passive fimes were weakened. Corrosion measurements of iron, carbon steel, and titanium were performed. Iron and carbon steels were proven to become passivated in the carbonate media, but pitting corrosion occurred in the presence of chloride ions. From the impedance data, we conclude that an adsorptive reaction forming Fe(OH){sub 2} occurs in the dissolution of iron and carbon steel. In 0.1 M NaHC0{sub 3} solution, iron and carbon steel showed a corrosion rate of 43-61 {mu}m/yr and 18 {mu}m/yr, respectively. In ground water, iron showed a corrosion rate of 5.8{mu}m/yr and carbon steel showed an even smaller corrosion rate (0.27{mu}m/yr). Titanium was passivated in an air-saturated 1 M KCl solution, but depassivated under N{sub 2} saturated solution. However, titanium was passivated in 1 M KCl solution even under N{sub 2} saturation. (Author).}
place = {Korea, Republic of}
year = {1991}
month = {Mar}
}