Effects of Alloying Elements on the Corrosion Behavior of Sputter–deposited Zr–(12–21)Cr–W Alloys in 0.5 M NaCl Solution

Authors

  • Basu Ram Aryal Central Departmenot of Chemistry
  • Jagadeesh Bhattarai Central Departmenot of Chemistry

DOI:

https://doi.org/10.3126/jncs.v25i0.3305

Keywords:

Zr-(12-21)Cr-W alloys, Sputter deposition, Corrosion test, Open circuit potential, 0.5 M NaCl

Abstract

The synergistic effect of the simultaneous additions of tungsten and zirconium in the
sputter-deposited amorphous or nanocrystalline Zr-(12-21)Cr-W alloys is studied in 0.5 M
NaCl solution open to air at 25°C using corrosion tests and open circuit potential
measurements. Corrosion rates of the sputter-deposited Zr-(12-21)Cr-W alloys containing
10-80 at % tungsten (that is, 0.95-1.85 x 10-2 mm.y-1) are more than one order of magnitude
lower than that of the sputter-deposited tungsten and even lower than those of zirconium as
well as chromium in 0.5 M NaCl solution. The addition of 8-73 at % zirconium content in
the sputter-deposited binary W-(12-21)Cr alloys seems to be more effective to improve the
corrosion-resistant properties of the sputter-deposited ternary Zr-Cr-W alloys containing
12-21 at % chromium in 0.5 M NaCl solution. The sputter-deposited Zr-(17-21)Cr-W alloys
containing an adequate amounts of zirconium metal showed the more stable passivity and
showed higher corrosion resistance than those of alloy-constituting elements in 0.5 M NaCl
solution open to air at 25°C.

Keywords: Zr-(12-21)Cr-W alloys, sputter deposition, corrosion test, open circuit potential,
0.5 M NaCl.

DOI:  10.3126/jncs.v25i0.3305

Journal of Nepal Chemical Society Volume 25, 2010 pp 75-82

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Author Biographies

Basu Ram Aryal, Central Departmenot of Chemistry

Associate Professor, Central Department of Chemistry, Tribhuvan University, GPO Box 2040, Kathmandu, Nepal.

Jagadeesh Bhattarai, Central Departmenot of Chemistry

Associate Professor, Central Department of Chemistry, Tribhuvan University,  Kathmandu, Nepal.

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How to Cite

Aryal, B. R., & Bhattarai, J. (2010). Effects of Alloying Elements on the Corrosion Behavior of Sputter–deposited Zr–(12–21)Cr–W Alloys in 0.5 M NaCl Solution. Journal of Nepal Chemical Society, 25, 75–82. https://doi.org/10.3126/jncs.v25i0.3305

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