Forty-six different steel weldments were subjected to 12 months’ alternate immersion in 3 percent sodium chloride solution. Weight loss was more dependent on the type of steel than the nature of the weld, but severity of corrosion in the weld region was affected by both factors. Apparatus was constructed to measure short circuit current between exposed surfaces of parent metal and weld metal. Rapid fluctuations in this current made precise determinations difficult, but average values were reproducible if a set conditioning procedure was used prior to measurement. Variations in current with sodium chloride concentration and with oxygen content of a gas mixture bubbled into the solution were determined, and the activation energy in a 3 percent sodium chloride solution increased from 4 to 6 kcal/mole as the oxygen content of the gas mixture decreased from 100 to 20 percent. 3.7.3
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January 1959
Research Article|
January 01 1959
Corrosion of Steel Weldments
J. U. MacEwan
J. U. MacEwan
J. U. MacEWAN is chairman of the McGill University Department of Metallurgical Engineering and holds the Chair of Birks Professor of Metallurgy. He graduated from Queen’s University, Kingston, Ontario, in 1922. He was on the staff of the Montana School of Mines from 1931 until 1936.
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H. H. Yates
H. H. Yates
H. H. YATES is an associate professor in the McGill University Department of Metallurgical Engineering. He received a PhD in physical chemistry from that university in 1952. A member of CPEQ, CIM and AIME, he is vice-chairman of the Montreal ASM chapter and chairman of the Montreal NACE Section.
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CORROSION (1959) 15 (1): 18–22.
Article history
Received:
May 07 1958
