J Mater Sci Technol ›› 2010, Vol. 26 ›› Issue (9): 827-832.

• Regular Papers • Previous Articles     Next Articles

High-temperature Oxidation Behavior of Zircaloy-4 and Zirlo in Steam Ambient

Hyung Hoon Kim, Jun Ho Kim, Jin Young Moon, Ho Seong Lee, Jeong Joo Kim, Young Suck Chai   

  1. 1) School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Buk-gu, Daegu, 702-701, Republic of Korea
    2) School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si, Gyeongsangbuk-do, 712-749, Republic of Korea
  • Received:2009-04-13 Revised:2010-04-06 Online:2010-09-21 Published:2010-09-21
  • Contact: Lee HoSeong
  • Supported by:

    the Korea Science & Engineering Foundation through the BAERI Program (Grant No. M20508110003)

Abstract:

The oxidation characteristics for Zircaloy-4 and Zirlo in the temperature range of 700−1200°C under steam supply condition were investigated by using a modified thermo-gravimetric analyzer. The specimens were oxidized for 3600 s at each temperature and then quenched in a furnace. The oxidation rate constants were measured from the weight gains to evaluate the oxidation behavior in Zircaloy-4 and Zirlo. The weight gain rates of Zirlo were lower than those of Zircaloy-4, leading to the low rate constants. The different oxidation behaviors between both cladding materials were considered to be due to the difference in their chemical compositions.

Key words: Zircaloy-4, Zirlo, Oxidation