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Vol.52, No.11, 857 ~ 873, 2014
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| Title |
| Review Paper : Development of Sulfuric and Hydrochloric Acid Dew-Point Corrosion-Resistant Steels: 2. Reliability Verification of New Corrosion-Resistant Steel by Field Test |
| 박선아 Sun Ah Park , 장승익 Seung Ik Jang , 김정구 Jung Gu Kim , 이병호 Byoung Ho Lee , 윤정봉 Jung Bong Yoon |
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| Abstract |
| A newly developed low-alloy corrosion-resistant steel shows superior properties to sulfuric and hydrochloric acid dew-point corrosion as well as excellent mechanical properties, weldability and machinability with attention to low cost and high efficiency. In addition, welding materials which can accommodate the corrosion-resistant properties and mechanical properties of newly developed low-alloy corrosion-resistant steel have also been developed. Generally, to assess corrosion performance of developed steels, specimens were evaluated by laboratory corrosion tests in a simulated field environment. However, a flue gas desulfurization (FGD) system included several environmental parameters such as change of corrosion environment depending on shutdown/ operation of power plants, location of steels in facilities and velocity of a moving fluid. Therefore, to verify the reliability of newly corrosion-resistant steel, plant qualification test is necessary. In an actual environment, new developed low-alloy corrosion-resistant steel was proved to have better corrosion resistance than the other steels (existing corrosion-resistant steels and ordinary carbon steel). (Received July 26, 2014) |
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| Key Words |
| alloys, rolling, corrosion, scanning electron microscopy，SEM, sulfuric and hydrochloric acid dew- point corrosion-resistant steels |
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