Special Issue
  • Corrosion Behaviors of TiC Ceramic Particulate Reinforced Steel Composites Fabricated by Liquid Pressing Infiltration Process in Salt Water Environment
  • Yeong-Hwan Lee*,**, Seongmin Ko*, Sangmin Shin*,**, Seungchan Cho*, Yangdo Kim**, Junghwan Kim*, Sang-Kwan Lee*, Sang-Bok Lee*

  • * Composite Research Division, Korea Institute of Materials Science, Changwon, Korea
    ** School of Materials and Science Engineering, Pusan National University, Busan, Korea 

  • 용융가압함침공정으로 제조된 TiC 세라믹 입자 강화 철강복합재의 염수환경에서의 부식 특성
  • 이영환*,** · 고성민* · 신상민*,** · 조승찬* · 김양도** · 김정환* · 이상관* · 이상복*

Abstract

In this study, TiC ceramic particulate reinforced steel composites was fabricated using a liquid pressing infiltration process. Studies were conducted on microstructure analysis and basic physical properties such as hardness and corrosion characteristics in salt water environment for comparison with commercial nodular cast iron. As a result of comparison of corrosion characteristics in a salt water environment, both corrosion potential and corrosion current density were lower than that of ductile graphite cast iron. The lower calculated corrosion rate confirms that the TiC-Fe metal composite has superior corrosion resistance than the cast iron.


본 연구에서는 용융가압함침공정을 이용하여 제조된 TiC 세라믹 입자강화 철강복합재를 제조하고 상용 구상흑연주철과 비교를 위하여 미세조직 분석 및 경도 등 기초물성과 선박 해양 분야등의 적용가능성 검토를 위하여 염수환경에서의 부식 특성에 관한 연구를 진행하였다. 염수환경에서의 부식특성 비교 결과 구상흑연주철 대비 부식전위와 부식전류밀도 모두 낮은 값을 나타내었고, 낮은 연간부식률을 통하여 TiC-Fe 금속복합재의 내식성이 더 뛰어난 것을 확인하였다.


Keywords: 금속복합재료(Metal matrix composites), 용융가압합침(Liquid pressing infiltration), 탄화 타이타늄(Titanium carbide), 동전위 분극(Potentiodynamic polarization) 

This Article

Correspondence to

  • Junghwan Kim, Sang-Bok Lee
  • E-mail: jhwankim@kims.re.kr, leesb@kims.re.kr