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The corrosion of carbon steel in aqueous lithium hydroxide under a hydrogen blanket

Technical Report:

Abstract

The corrosion behavior of carbon steel in 3 and 5 mol/L aqueous solutions of lithium hydroxide at 95 degrees C under a hydrogen atmosphere was investigated in immersion tests lasting ten days. Corrosion rates were determined by wight loss, and the corrosion products were characterized by bulk chemical analysis, by light and electron microscopy, and by powder X-ray diffraction. Corrosion was uniform and the corrosion rates were moderately high (0.42 mm/y in 3 mol/L and 0.56 mm/y in 5 mol/L). The corrosion products consisted of a mixture of well-formed, octahedral crystals, and poorly crystallized masses and spherules that formed by precipitation from solution. These products formed a scale on the metal surface that continually sloughed off and afforded only minor protection. Both phases were identified as lithium-iron oxides, each possessing a disordered, non-stoichiometric structure. The predominant phase was a magnetic spinel LiFe{sub 5}0{sub 8} and the minor phase was LiFe0{sub 2}. A corrosion mechanism is outlined. (2 figs., 5 tabs., 20 refs.).
Authors:
Graydon, J W; Kirk, D W [1] 
  1. Toronto Univ., ON (Canada). Dept. of Chemical Engineering and Applied Chemistry
Publication Date:
Mar 01, 1990
Product Type:
Technical Report
Report Number:
CFFTP-G-9045
Reference Number:
SCA: 360105; 700480; PA: AIX-24:005286; SN: 93000930471
Resource Relation:
Other Information: DN: Preprint of a paper submitted to Corrosion.; PBD: Mar 1990
Subject:
36 MATERIALS SCIENCE; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CARBON STEELS; CORROSION; LITHIUM HYDROXIDES; 360105; 700480; CORROSION AND EROSION; COMPONENT DEVELOPMENT; MATERIALS STUDIES
OSTI ID:
10118706
Research Organizations:
Canadian Fusion Fuels Technology Project, Toronto, ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ON: DE93611014; TRN: CA9201001005286
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[17] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Graydon, J W, and Kirk, D W. The corrosion of carbon steel in aqueous lithium hydroxide under a hydrogen blanket. Canada: N. p., 1990. Web.
Graydon, J W, & Kirk, D W. The corrosion of carbon steel in aqueous lithium hydroxide under a hydrogen blanket. Canada.
Graydon, J W, and Kirk, D W. 1990. "The corrosion of carbon steel in aqueous lithium hydroxide under a hydrogen blanket." Canada.
@misc{etde_10118706,
title = {The corrosion of carbon steel in aqueous lithium hydroxide under a hydrogen blanket}
author = {Graydon, J W, and Kirk, D W}
abstractNote = {The corrosion behavior of carbon steel in 3 and 5 mol/L aqueous solutions of lithium hydroxide at 95 degrees C under a hydrogen atmosphere was investigated in immersion tests lasting ten days. Corrosion rates were determined by wight loss, and the corrosion products were characterized by bulk chemical analysis, by light and electron microscopy, and by powder X-ray diffraction. Corrosion was uniform and the corrosion rates were moderately high (0.42 mm/y in 3 mol/L and 0.56 mm/y in 5 mol/L). The corrosion products consisted of a mixture of well-formed, octahedral crystals, and poorly crystallized masses and spherules that formed by precipitation from solution. These products formed a scale on the metal surface that continually sloughed off and afforded only minor protection. Both phases were identified as lithium-iron oxides, each possessing a disordered, non-stoichiometric structure. The predominant phase was a magnetic spinel LiFe{sub 5}0{sub 8} and the minor phase was LiFe0{sub 2}. A corrosion mechanism is outlined. (2 figs., 5 tabs., 20 refs.).}
place = {Canada}
year = {1990}
month = {Mar}
}