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Corrosion behavior induced by LiCl-KCl in type 304 and 316 stainless steel and copper at low temperature

Title
Corrosion behavior induced by LiCl-KCl in type 304 and 316 stainless steel and copper at low temperature
Author
김용수
Keywords
Copper; Pitting Corrosion; Pyroprocessing; Stainless Steel
Issue Date
2017-06
Publisher
KOREAN NUCLEAR SOC
Citation
NUCLEAR ENGINEERING AND TECHNOLOGY, v. 49, no. 4, page. 769-775
Abstract
The corrosion behavior of stainless steel (304 and 316 type) and copper induced by LiCl-KCl at low temperatures in the presence of sufficient oxygen and moisture was investigated through a series of experiments (at 30 degrees C, 40 degrees C, 60 degrees C, and 80 degrees C for 24 hours, 48 hours, 72 hours, and 96 hours). The specimens not coated on one side with an aqueous solution saturated with LiCl-KCl experienced no corrosion at any temperature, not even when the test duration exceeded 96 hours. Stainless steel exposed to LiCl-KCl experienced almost no corrosion below 40 degrees C, but pitting corrosion was observed at temperatures above 60 degrees C. As the duration of the experiment was increased, the rate of corrosion accelerated in proportion to the temperature. The 316 type stainless steel exhibited better corrosion resistance than did the 304 type. In the case of copper, the rate of corrosion accelerated in proportion to the duration and temperature but, unlike the case of stainless steel, the corrosion was more general. As a result, the extent of copper corrosion was about three times that of stainless steel. (C) 2017 Korean Nuclear Society, Published by Elsevier Korea LLC.
URI
https://www.sciencedirect.com/science/article/pii/S1738573316301978?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/114390
ISSN
1738-5733
DOI
10.1016/j.net.2017.02.007
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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