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

材料科学技术（英文）, 2010, 26(9): 827-832.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

2.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

3.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

4.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

5.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

6.School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si, Gyeongsangbuk-do, 712-749, Republic of Korea

基金项目: This work was supported by the Korea Science & Engineering Foundation through the BAERI Program(Grant No. M20508110003)

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

Hyung Hoon Kim ^1, , Jun Ho Kim ^2, , Jin Young Moon ^3, , Ho Seong Lee ^4, , Jeong Joo Kim ^5, , Young Suck Chai ^6,

1.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

2.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

3.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

4.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

5.School of Materials Science and Engineering, Kyungpook National University, 1370 Sangyeok-dong, Bukogu, Daegu, 702-701, Republic of Korea

6.School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si, Gyeongsangbuk-do, 712-749, Republic of Korea

Keywords： Zircaloy-4

The oxidation characteristics for Zircaloy-4 and Zirlo in the temperature range of 700-1200℃ 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.

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