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Surface and Corrosion Study of Laser-processed Zirconium Alloys.
Rawers-J; Reitz-W; Bullard-S; Roub-EK
Corrosion 1991 Oct; 47(10):769-777
Reactor-grade zirconium (zircaloy-2) was laser-glazed and laser- alloyed with nickel (ni) or chromium (cr) powders in this U.S. Bureau of Mines study. Laser alloying produced a surface that was macroscopically, chemically homogeneous. However, at the microscopic level the melt zone was a mixture of microcrystalline pure zirconium (zr) and extremely fine grain, or possibly amorphous, solid solution regions of zr and alloying elements. Corrosion tests (potentiodynamic and long-term immersion) were conducted in 10 pct fecl3 solution. The potentiodynamic tests showed icorr and ecorr were a strong function of surface conditioning, altered by grit- blasting, laser processing, acid cleaning, and heat treating. Significant improvement was achieved in corrosion resistance by laser glazing and laser alloying.
Issue of Publication
Corrosion, V. 47, No. 10, Oct. 1991, PP. 769-777
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division