산성 용액에서 고크롬 주철의 전면 부식 거동
General Corrosion Behavior of High Chromium Cast Iron in an Acid Solution
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
The effect of carbon addition on the general corrosion behavior of high-chromium cast iron (HCCI) wasstudied by a scanning electron microscope with energy dispersive spectroscopy (SEM-EDS) or electronback-scattered diffraction (EBSD), or electrochemical polarization techniques in 0.1 mol dm-3 H2SO4 +0.05 mol dm-3 HCl at room temperature. The addition of 2.1-2.8 wt% carbon to HCCI increased the fractionof eutectic austenite and eutectic carbide phases, while that of HCCI decreased the fraction of the primaryaustenitic phase. Potentiostatic polarization of the HCCI at -0.35 VSSCE or 0.0 VSSCE resulted inpreferential general corrosion of the primary austenitic or eutectic austenitic phases, respectively. Thedecrease in corrosion current density and the shift in noble corrosion potential direction with increasingcarbon content in the HCCI indicated that the fraction and the chemical composition of austenitic (primaryand eutectic) and carbide phases were strongly related to the general corrosion behavior of the HCCI.
Abstract
The effect of carbon addition on the general corrosion behavior of high-chromium cast iron (HCCI) wasstudied by a scanning electron microscope with energy dispersive spectroscopy (SEM-EDS) or electronback-scattered diffraction (EBSD), or electrochemical polarization techniques in 0.1 mol dm-3 H2SO4 +0.05 mol dm-3 HCl at room temperature. The addition of 2.1-2.8 wt% carbon to HCCI increased the fractionof eutectic austenite and eutectic carbide phases, while that of HCCI decreased the fraction of the primaryaustenitic phase. Potentiostatic polarization of the HCCI at -0.35 VSSCE or 0.0 VSSCE resulted inpreferential general corrosion of the primary austenitic or eutectic austenitic phases, respectively. Thedecrease in corrosion current density and the shift in noble corrosion potential direction with increasingcarbon content in the HCCI indicated that the fraction and the chemical composition of austenitic (primaryand eutectic) and carbide phases were strongly related to the general corrosion behavior of the HCCI.
참고문헌 (13)
- YuguiZheng, "Damage Mechanisms and Metallic Materials Development in Multiphase Flow", CORROSION SCIENCE AND TECHNOLOGY, 31(1), pp.41~47 (2002), 한국부식방식학회
- 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
- 조현욱, "고크롬 백주철의 미세조직과 기계적 특성에 미치는 초기응고 조직의 영향", 한국주조공학회지, 35(6), pp.178~184 (2015), 한국주조공학회
- U. Pranav Nayak, "A Comparative Study on the Influence of Chromium on the Phase Fraction and Elemental Distribution in As-Cast High Chromium Cast Irons: Simulation vs. Experimentation", Metals, 10(1), pp.30~ (2020), MDPI AG[DOI]
- ASM International, "ASM Specialty Handbook Cast Irons", 107~122 (1996)
- S. K. Yu, "A Study on the Solidification Structure, Heat-Treated Microstructure and Mechanical Property of Multi-Component White Cast Iron for Hot Forged Roller", Korean Journal of Materials Research, 8, pp.436~ (1998)[DOI]
- J. U. Kwon, "Effects of Ti addition on the Microstructure and Mechanical Properties of High Chromium White Cast Iron", Journal of Korea Foundry Society, 18, pp.48~ (1998)[DOI]
- R.J. Chung, "Effects of titanium addition on microstructure and wear resistance of hypereutectic high chromium cast iron Fe–25wt.%Cr–4wt.%C", Wear, 267(1-4), pp.356~361 (2009), Elsevier BV[DOI]
- C. P. Tabrett, "Microstructure-property relationships in high chromium white iron alloys", International Materials Reviews, 41, pp.59~ (1996)[DOI]
- I. Chakrabarty, "Structural study of Cr-Mn-Cu white cast irons", Journal of Materials Science Letters, 6, pp.1399~ (1987)[DOI]
- Jiaxu Wang, "Study of the corrosion behaviour of sensitized 904L austenitic stainless steel in Cl- solution", Corrosion Science, 181, pp.109234~ (2021), Elsevier BV[DOI]
- Ning Fu, "In situ investigation of local corrosion at interphase boundary under an electrochemical-atomic force microscope", Journal of Solid State Electrochemistry, 19(2), pp.337~344 (2015), Springer Science and Business Media LLC[DOI]