| 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 |
| Authors |
박선아(Sun Ah Park); 장승익(Seung Ik Jang); 김정구(Jung Gu Kim); 이병호(Byoung Ho Lee); 윤정봉(Jung Bong Yoon) |
| DOI |
https://doi.org/10.3365/KJMM.2014.52.11.857 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
alloys; rolling; corrosion; scanning electron microscopy，SEM; sulfuric and hydrochloric acid dew- point corrosion-resistant steels |
| 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) |