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    초록·키워드

    Corrosion characteristics on the material of turbine blade was electro-chemically evaluated in NaCl solution and Na₂SO₄ solution, respectively. Test methods performed were polarization test, Huey test and Oxalic acid etching test. From the results obtained, it was found that 1)12Cr-alloy showed high corrosion rate in 3.5wt% NaCl solution and Na₂SO₄ solution at high temperature, 2)intergranular corrosion sensitivity of 12Cr alloy was smaller than austenitic stainless steel, and 3)corrosion rate of 12Cr alloy was high due to large mass loss rate by corrosion.

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      UCI(KEPA) : I410-ECN-0101-2009-550-012642368