Corrosion Behavior of Soldered and Laser-Welded Ni-Free Co-Cr Alloy Joints in Sodium Chloride Solution

Piyarach Eutrirak; Viritpon Srimaneepong; Kanokwan Saengkiettiyut

doi:10.4028/www.scientific.net/AMR.970.93

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 970Corrosion Behavior of Soldered and Laser-Welded...

Corrosion Behavior of Soldered and Laser-Welded Ni-Free Co-Cr Alloy Joints in Sodium Chloride Solution

Abstract:

This paper investigates the quality and corrosion property of Ni-free Co-Cr alloy joints soldered and laser welded using filler. The soldered and laser-welded test specimens were sectioned at the center and rejoined by either soldering or laser welding using appropriate fillers. The joint area was analyzed using microfocus X-ray and the percentage of porosity, as a measure of joint quality, was calculated. The corrosion behavior of soldered and laser-welded test specimens was evaluated using a potentiodynamic polarization technique in a 0.9 wt.% NaCl solution, pH 2.3, at 37°C. The results indicated that the amount of porosity and cracks in soldered joints were less than those of the laser-welded joints, leading to a lower corrosion rate.

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Periodical:

Advanced Materials Research (Volume 970)

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93-96

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.970.93

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Online since:

June 2014

Authors:

Piyarach Eutrirak*, Viritpon Srimaneepong, Kanokwan Saengkiettiyut

Keywords:

Corrosion, Laser Welding, Ni-Free Co-Cr Alloy, Polarization, Solder

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