Improving corrosion resistance of magnesium by nonequilibrium alloying with yttrium

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Corrosion

DOI:https://doi.org/10.5006/1.3316022· OSTI ID:142359

Miller, P L; Shaw, B A ^[1]; Wendt, R G; Moshier, W C ^[2]

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1. Pennsylvania State Univ., University Park, PA (United States)
2. Martin Marietta Astronautics Group, Denver, CO (United States)

Significant improvements were achieved in the anodic polarization behavior of magnesium (Mg) by nonequilibrium alloying with 9 at% to 22 at% yttrium (Y). Alloys were fabricated using the nonequilibrium technique of magnetron cosputter deposition. Anodic potentiodynamic polarization experiments were conducted at various scan rates and pH values to assess the corrosion resistance of several MgY alloys. These alloys exhibited significantly enhanced corrosion behavior compared to pure Mg. Differences included higher breakdown potentials and lower passive current densities. X-ray diffraction of each alloy revealed the Y was retained in solid solution.

• Sponsoring Organization: USDOE
• OSTI ID: 142359
• Journal Information: Corrosion, Journal Name: Corrosion Journal Issue: 12 Vol. 49; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CONCENTRATION RATIO
CORROSION RESISTANCE
ELECTROCHEMICAL CORROSION
MAGNESIUM BASE ALLOYS
METALLURGICAL EFFECTS
YTTRIUM
YTTRIUM ALLOYS