Effect of the microstructure of Ti-5Mo on the anodic dissolution in H/sub 2/SO/sub 4/

Journal Article · Wed Apr 01 00:00:00 EST 1987 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3583142· OSTI ID:6297199

Kim, Y J; Oriani, R A

The effect of microstructure of the Ti-5Mo alloy on its anodic dissolution rate in sulfuric acid solution at various temperatures has been investigated. TiMo alloys exhibit a region of increased dissolution rate in the vicinity of +0.20 V (saturated calomel electrode (SCE)) in 10% H/sub 2/SO/sub 4/, the same potential region in which pure Mo exhibits a large anodic dissolution rate. Aging of Ti-5Mo at 350 C was found to lead to the formation of ..omega.. phase. Heat treatment caused larger passive currents in 10% H/sub 2/SO/sub 4/, but the critical passivation potentials and corrosion potentials were not significantly affected. Molybdenum was enriched in the oxide formed on aged Ti-5Mo at +0.23 V (SCE), in comparison with the Mo concentration found in the oxide on as-received Ti-5Mo.

• Research Organization: Corrosion Research Center and Dept. of Chemical Engineering and Materials Science, Univ. of Minnesota, 112 Mines and Metallurgy, 221 Church St. S.E., Minneapolis, MN 55455
• OSTI ID: 6297199
• Journal Information: Corrosion (Houston); (United States), Vol. 43:4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MOLYBDENUM ALLOYS
AGING
DISSOLUTION
MICROSTRUCTURE
TITANIUM ALLOYS
BINARY ALLOY SYSTEMS
CHEMICAL REACTION KINETICS
CRYSTAL-PHASE TRANSFORMATIONS
ELECTROCHEMISTRY
HIGH TEMPERATURE
STRUCTURAL CHEMICAL ANALYSIS
SULFURIC ACID
ALLOY SYSTEMS
ALLOYS
CHEMISTRY
CRYSTAL STRUCTURE
HYDROGEN COMPOUNDS
INORGANIC ACIDS
KINETICS
PHASE TRANSFORMATIONS
REACTION KINETICS
360101* - Metals & Alloys- Preparation & Fabrication
360102 - Metals & Alloys- Structure & Phase Studies