한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제54권2호
  • /
  • Pages.71-76
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  • 2021
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  • 1225-8024(pISSN)
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  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
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Ag925의 전기화학적 특성에 미치는 네오디뮴 함량의 영향

Effect of Neodymium concentration on electrochemical properties of 925 silver

  • 신병현 (부산대학교, 재료공학과, 소재기술연구소) ;
  • 정승진 (부산대학교, 재료공학부) ;
  • 정원섭 (부산대학교, 재료공학부)
  • Shin, Byung-Hyun (The Institute of Materials Technology, Departments of Materials Science and Engineering, Pusan National University) ;
  • Jung, Seungjin (School of Materials Science and Engineering, Pusan National University) ;
  • Chung, Wonsub (School of Materials Science and Engineering, Pusan National University)
  • 투고 : 2021.03.02
  • 심사 : 2021.04.09
  • 발행 : 2021.04.30
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초록

Ag925, silver with added copper, is popular alloy due to its low price. However, it has a difficult to use because of the low corrosion resistance. In various alloys, neodymium (Nd) works as an element to improve corrosion resistance by reacting with interstitial elements in the alloy. When 1.5 wt. % Neodymium was added to Ag925, the potential on the activated polarization in a potentiodynamic polarization test was increased from -0.15 V to -0.05 V. Ag925 with added neodymium showed the passivation after activation polarization. But When the potential increased around 50 mV, the current density is increased to 3 × 10-3. Ag925 with the 1.5 wt. % Nd had the low corrosion rate.

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과제정보

이 논문은 2019년 대한민국 교육부와 한국연구재단의 지원을 받아 수행된 연구임 (NRF-2019S1A2A3096992)

참고문헌

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