Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Stir-Accelerated Corrosion Test of High Chromium Cast Iron for Application in Slurry Pumps

슬러리 펌프용 고크롬 주철의 교반 가속 부식법

  • Lee, Jun-Seob (Materials Science and Engineering, Changwon National University) ;
  • Lee, Jun-Hyeong (Materials Convergence and System Engineering, Changwon National University) ;
  • Lee, Ye-Jin (Materials Convergence and System Engineering, Changwon National University) ;
  • Oh, Jun-Seok (Materials Science and Engineering, Changwon National University) ;
  • Kim, Jung-Gu (Materials Science and Engineering, Sungkyunkwan University) ;
  • Lee, Je-hyun (Materials Science and Engineering, Changwon National University)
  • 이준섭 (국립창원대학교 신소재공학부) ;
  • 이준형 (국립창원대학교 소재융합시스템공학과) ;
  • 이예진 (국립창원대학교 소재융합시스템공학과) ;
  • 오준석 (국립창원대학교 신소재공학부) ;
  • 김정구 (성균관대학교 신소재공학부) ;
  • 이재현 (국립창원대학교 신소재공학부)
  • Received : 2022.10.13
  • Accepted : 2022.10.21
  • Published : 2022.11.02
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Abstract

Stir-accelerated corrosion test of a high chromium cast iron was attempted in 0.1 mol dm-3 H2SO4 + 0.05 mol dm-3 HCl + 10 wt% SiC solution for 48 h at room temperature or at 45 ℃. The high chromium cast iron was composed of 2.8 wt% C and 27 wt% Cr and balanced with Fe. The high chromium cast iron was positioned into a 500 mL beaker with stirring of the solution at 1050 rpm using a magnetic hot plate. The corrosion rate was increased by agitating the solution. In addition, the corroded depth of the high chromium cast iron surface was increased by agitating the solution. The surface morphology of the high chromium cast iron after the stir-accelerated corrosion test revealed that a dendritic austenite phase partially remained in the corroded region after agitating the solution, indicating that solution movement during agitating could accelerate the corrosion rate of the high chromium cast iron.

Keywords

Acknowledgement

본 연구는 교육부와 한국연구재단의 재원으로 지원을 받아 수행된 3단계 산학연협력 선도대학 육성사업(LINC 3.0)의 연구결과입니다.

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