Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effect of Si, Mo, and Mn on the Corrosion Characteristics of Zr-0.2Sn-0.8Nb Alloy

Zr-0.2Sn-0.8Nb 합금의 부식특성에 대한 Si, Mo 및 Mn 원소의 첨가영향

  • Lee, Myeong-Ho ( Advanced Zr Alloy Development, Korea Atomic Energy Research Institute) ;
  • Choe, Byeong-Gwon ( Advanced Zr Alloy Development, Korea Atomic Energy Research Institute) ;
  • Jeong, Yong-Hwan ( Advanced Zr Alloy Development, Korea Atomic Energy Research Institute)
  • 이명호 (한국원자력연구소 지르코늄 신합금핵연료피복관개발팀) ;
  • 최병권 (한국원자력연구소 지르코늄 신합금핵연료피복관개발팀) ;
  • 정용환 (한국원자력연구소 지르코늄 신합금핵연료피복관개발팀)
  • Published : 2002.03.01
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Abstract

The Zr-0.2Sn-0.8Nb-X(X = 0~200ppm Si, 0~0.4wt.% Mo and Mn respectively) ingots for test specimens were manufactured by a vacuum arc re-melting method to find out the effect of Si, Mo, and Mn on the corrosion characteristics of the Zr-0.2Sn-0.8Nb alloy. After being heat-treated and rolled repeatedly out to be flat materials, they were finally heat-treated at 51$0^{\circ}C$ for three hours and used as the specimens for corrosion tests. The corrosion behavior of the specimens was studied in both 40$0^{\circ}C$ steam for 200 days and in aqueous 70 ppm LiOH solution at 36$0^{\circ}C$ for 90 days. From the study it was found that Si from 80 to 200 ppm contributed to increasing the corrosion resistance of Zr-0.2Sn-0.8Nb alloy in both steam and LiOH solution. This study also showed that Mn from 0.1 to 0.4% caused to go up the corrosion resistance, whereas Mo played a apart in improving the corrosion resistance only between 0.05 and 0.2 wt.%.

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References

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