Corrosion behavior of WC-Co and WC-Ni in 3.5% NaCl at increasing temperature
Tungsten carbides (WC) are widely used as wear resistant components such as seal, valves, rings, nozzle and bearings. But in some processing operations, the environment necessarily includes severe corrosion or extremes of temperatures. In paper reveal, the corrosion performance of commercial cobalt...
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Trans Tech Publications Inc
2014
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| நிகழà¯à®¨à®¿à®²à¯ˆ அணà¯à®•à®²à¯: | http://dx.doi.org/10.4028/www.scientific.net/AMM.660.135 http://dx.doi.org/10.4028/www.scientific.net/AMM.660.135 http://eprints.uthm.edu.my/6370/1/Corrosion_Behavior_of_WC%2DCo_and_WC%2DNi_in_3.5%25_NaCl_at_Increasing.pdf |
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| தொகà¯à®ªà¯à®ªà¯: | Tungsten carbides (WC) are widely used as wear resistant components such as seal,
valves, rings, nozzle and bearings. But in some processing operations, the environment necessarily
includes severe corrosion or extremes of temperatures. In paper reveal, the corrosion performance
of commercial cobalt tungsten carbide (WC-6%Co) and nickel tungsten carbide (WC-9%Ni) in
seawater with 3.5% salinity. The experiment was performed in four different temperatures (20̊C,
40̊C, 60̊C and 80̊C) and the surface structure by corrosion attack was reveal under SEM. The Icorr
value of WC-9%Ni is lower than WC-6%Co, elucidate that WC-9%Ni is better in corrosion
resistance compare to WC-6%Co. As the temperature increased, the corrosion rate for every
material increased as expected. Decreasing in hardness value for both materials reveal that, the
material’s hardness decrease after corrosion has attacked. |
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