Erosion and Corrosion Behavior of Laser Cladded Stainless Steels with Tungsten Carbide

Singh, Raghuvir and Kumar, Mukesh and Kumar , Deepak and Mishra, Suman K (2012) Erosion and Corrosion Behavior of Laser Cladded Stainless Steels with Tungsten Carbide. Journal of Materials Engineering and Performance, 21(11) (0.855 (SCI)). pp. 2274-2282.

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Laser cladding of tungsten carbide (WC) on stainless steels 13Cr-4Ni and AISI 304 substrates has been performed using high power diode laser. The cladded stainless steels were characterized for microstructural changes, hardness, solid particle erosion resistance and corrosion behavior. Resistance of the clad to solid particle erosion was evaluated using alumina particles according to ASTM G76 and corrosion behavior was studied by employing the anodic polarization and open circuit potential measurement in 3.5% NaCl solution and tap water. The hardness of laser cladded AISI 304 and 13Cr-4Ni stainless steel was increased up to 815 and 725Hv100 g, respectively. The erosion resistance of the modified surface was improved significantly such that the erosion rate of cladded AISI 304 (at 114 W/mm2) was observed 0.74 mg/cm2/h as compared to 1.16 and 0.97 mg/cm2/h for untreated AISI 304 and 13Cr-4Ni, respectively. Laser cladding of both the stainless steels, however, reduced the corrosion resistance in both NaCl and tap water.

Item Type:Article
Official URL/DOI:htpp://10.1007/s11665-012-0170-y
Uncontrolled Keywords:corrosion, erosion, hydro turbine, laser cladding, stainless steel 13Cr-4Ni and AISI 304, tungsten carbide
Divisions:Corrosion and Surface Engineering
ID Code:6308
Deposited By:Dr. Raghuvir Singh
Deposited On:24 Dec 2012 09:55
Last Modified:13 Feb 2013 10:32
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