Corrosion Science and Technology

  • 제20권6호
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  • Pages.475-483
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  • 2021
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  • 1598-6462(pISSN)
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  • 2288-6524(eISSN)
한국부식방식학회 (The Corrosion Science Society of Korea)
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불소 첨가/미첨가 인공타액 용액에서 연마 및 마스킹 조건이 적층제조 Ti-6Al-4V 합금의 동전위분극시험 결과에 미치는 영향

Effects of Grinding and Masking Conditions on the Potentiodynamic Polarization Curves of Additively Manufactured Ti-6Al-4V Alloy in Artificial Saliva Solution with or Without Fluoride Ions

  • 안경빈 (조선대학교 첨단소재공학과) ;
  • 장희진 (조선대학교 신소재공학과)
  • Ahn, KyungBin (Department of Advanced Materials Engineering, Chosun University) ;
  • Jang, HeeJin (Department of Materials Science and Engineering, Chosun University)
  • 투고 : 2021.12.07
  • 심사 : 2021.12.16
  • 발행 : 2021.12.31
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초록

Additively manufactured titanium alloy is one of the promising materials in advanced medical industries. However, these additively manufactured alloys show corrosion properties different from those of conventional materials due to their unique microstructure. In this study, the effect of surface roughness and masking conditions on the results of the potentiodynamic polarization tests on additively manufactured or conventional Ti-6Al-4V alloys in artificial saliva solution with or without fluoride was investigated. The results showed that the corrosion potential was slightly lower with a flat cell with an O-ring than with masking tape. The corrosion rate was decreased with decreases in the surface roughness. Localized corrosion involving delamination of the surface layer occurred at 7 ~ 9 V (SSC) on the additively manufactured alloy in solution with or without fluoride when the samples were finished with 1000-grit SiC paper, whereas localized corrosion was not observed in the specimens finished with 1-㎛ alumina paste.

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과제정보

본 연구는 2021년도 산업통상자원부의 재원으로 한국에너지기술평가원(KETEP)의 에너지인력양성사업(No. 20194030202410) 및 2019년도 산업기술평가관리원(KEIT) 연구비 지원에 의한 성과임(20006868).

참고문헌

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