모사 슬러리 용액에서 정전류 분극을 활용한 고크롬 주철 부식 시험
Corrosion Tests for High Chromium Cast Iron Using Galvanostatic Polarization Technique in a Simulating Slurry Solution
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The galvanostatic polarization technique was used to accelerate corrosion in high chromium cast iron (HCCI) immersed in a simulated slurry solution of 0.1 mol dm-3 H2SO4 , 0.05 mol dm-3 HCl, and 10 wt% SiC. The HCCI contained 27 wt% of Cr and 2.8 wt% of C, and its microstructure mainly comprised austenitic and carbide phases. A two-electrode system using a dense carbon rod and the HCCI sample was employed for the galvanostatic polarization by applying an anodic current for 24 hours. The corrosion rate increased upon applying the anodic current, but the increase was not significant, particularly for current densities higher than 10 µA cm-2 . Following polarization, the corrosion morphology revealed that the anodic current accelerated surface corrosion in the HCCI; however while the depth of the corroded area increased, the increase was not substantial. The propagation behavior of the anodic current and its impact on corrosion were further discussed.
Abstract
The galvanostatic polarization technique was used to accelerate corrosion in high chromium cast iron (HCCI) immersed in a simulated slurry solution of 0.1 mol dm-3 H2SO4 , 0.05 mol dm-3 HCl, and 10 wt% SiC. The HCCI contained 27 wt% of Cr and 2.8 wt% of C, and its microstructure mainly comprised austenitic and carbide phases. A two-electrode system using a dense carbon rod and the HCCI sample was employed for the galvanostatic polarization by applying an anodic current for 24 hours. The corrosion rate increased upon applying the anodic current, but the increase was not significant, particularly for current densities higher than 10 µA cm-2 . Following polarization, the corrosion morphology revealed that the anodic current accelerated surface corrosion in the HCCI; however while the depth of the corroded area increased, the increase was not substantial. The propagation behavior of the anodic current and its impact on corrosion were further discussed.
참고문헌 (11)
- 김창규, "열처리된 고크롬 백주철", 저크롬강 이중주조재료의 내마모성과 파괴인성, 2004, pp.42(11), 877~886[DOI]
- 이로운, "초내식성 주철의 경도 및 부식 특성에 미치는 열처리의 영향", 대한금속·재료학회지, 52(7), pp.511~518 (2014), 대한금속·재료학회
- I. Chakrabarty, "Structural study of Cr-Mn-Cu white cast irons", Journal of Materials Science Letters, 6, pp.1399~ (1987)
- 이준섭, "산성 용액에서 고크롬 주철의 전면 부식 거동", CORROSION SCIENCE AND TECHNOLOGY, 20(6), pp.367~372 (2021), 한국부식방식학회[DOI]
- 이준섭, "슬러리 펌프용 고크롬 주철의 교반 가속 부식법", CORROSION SCIENCE AND TECHNOLOGY, 21(5), pp.418~421 (2022), 한국부식방식학회[DOI]
- Jun-Seob Lee, "Preferential dissolution behaviour of the austenite phase in Fe–27Cr–xC high chromium cast iron", RSC Advances, 13(28), pp.19220~19226 (2023), Royal Society of Chemistry (RSC)[DOI]
- Jun-Seok Oh, "Effect of Dendrite Fraction on the M23C6 Precipitation Behavior and the Mechanical Properties of High Cr White Irons", Metals, 11(10), pp.1576~ (2021), MDPI AG[DOI]
- Deuk-Won Jang, "Effect of Solidification Variables on the Tensile Property of 2.8 wt% C–26 wt% Cr White Iron", Metals, 12(9), pp.1416~ (2022), MDPI AG[DOI]
- Y. Zheng, "Damage mechanisms and metallic materials development in multiphase flow", Corrosion Science and Technology, 1, pp.41~ (2002)
- 문경만, "An Electrochemical Evaluation on the Corrosion of Weld Zone in Cold Arc Welding of the Cast Iron", CORROSION SCIENCE AND TECHNOLOGY, 7(2), pp.134~137 (2008), 한국부식방식학회
- Jun-Seob Lee, "Corrosion behaviour of ferrite and austenite phases on super duplex stainless steel in a modified green-death solution", Corrosion Science, 89, pp.111~117 (2014), Elsevier BV[DOI]