CHEMICAL AND GALVANIC CORROSION PROPERTIES OF TITANIUM ALLOYS

Technical Report · Sat Mar 01 04:00:00 EST 1958

OSTI ID:4295843

Kenahan, C B; Schlain, D

The chemical and galvanic corrosion properties of commercially pure titanium, a titanium-manganese alloy, a tithaium-aluminum-tin alloy, 2 titaniumcopper alloys, and 2 titanium-aluminum alloys were studied. Tests were conducted in synthetic ocean water, tapwater, 1% sodium hydroxide, 5% ferric chloride, 5% ammonium sulfate, various concentrations of sulfuric and hydrochloric acids, and 1% oxalic acid. All tests were carried out at 35 or 60 C, with a flow of air or helium. Dissimilar metals involved in galvanic-couples experiments were aluminum, magnesium, and stainless steel. Electrode-potential measurements on single (uncoupled) specimens were also measured. Commercially pure titanium and the titanium-base alloys were generally quite similar in their resistance tc corrosion, whether alone or in contact with a dissimilar metal. Contact with the titanium metals caused aluminum and magnesium tc corrode by galvanic action. Coupling with stainless steel in sulfuric acid solutions decreased the normal corrosion rate of the titanium metals. Contact with aluminum in air-aerated oxalic acid and O.1N sulfuric acid solutions resulted in cathodic corrosion of titanium and the titanium-base alloys; however, there were a few exceptions. The copper alloys showed better corrosion characteristics than titanium in certain sulfuric acid solutions but were more susceptible to chemical attack in some hydrochloric acid solutions. (auth)

• Research Organization: Bureau of Mines
• NSA Number: NSA-13-002174
• OSTI ID: 4295843
• Report Number(s): BM-RI-5423
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALUMINUM
ALUMINUM ALLOYS
AMMONIUM COMPOUNDS
COPPER ALLOYS
CORROSION
ELECTRIC POTENTIAL
ELECTROCHEMISTRY
HYDROCHLORIC ACID
IRON CHLORIDES
MAGNESIUM
MANGANESE ALLOYS
MEASURED VALUES
METALLURGY AND CERAMICS
OXALIC ACID
SODIUM HYDROXIDES
STAINLESS STEELS
SULFATES
SULFURIC ACID
TIN ALLOYS
TITANIUM ALLOYS
WATER