Effect of Ar~+ ions irradiation on corrosion resistance of zircaloy 4

LIU Xiaoyang1 BAI Xinde2 WAN Qian1 CHEN Baoshan3 WU Zhiming3                              1

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Effect of Ar~+ ions irradiation on corrosion resistance of zircaloy 4

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- Effect of Ar~+ ions irradiation on corrosion resistance of zircaloy 4
- NUCLEAR TECHNIQUES Issue 4, (2004)
- 作者机构：
  
  1. 清华大学工程物理系
  2. 清华大学材料科学与工程系
  3. 四川宜宾核燃料元件厂
  5. ,宜宾,644000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG174
- Published：01 April 2004
- 稿件说明：
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[1]刘晓阳,白新德,万千,陈宝山,伍志明.Ar~+离子辐照对锆4合金耐腐蚀性能的影响[J].核技术,2004(04):269-272.

LIU Xiaoyang1 BAI Xinde2 WAN Qian1 CHEN Baoshan3 WU Zhiming3 1. Effect of Ar~+ ions irradiation on corrosion resistance of zircaloy 4[J]. Nuclear techniques, 2004, (4): 269-272.
[1]刘晓阳,白新德,万千,陈宝山,伍志明.Ar~+离子辐照对锆4合金耐腐蚀性能的影响[J].核技术,2004(04):269-272. DOI：

LIU Xiaoyang1 BAI Xinde2 WAN Qian1 CHEN Baoshan3 WU Zhiming3 1. Effect of Ar~+ ions irradiation on corrosion resistance of zircaloy 4[J]. Nuclear techniques, 2004, (4): 269-272. DOI：

摘要

为了研究辐照损伤对锆4合金电化学耐腐蚀性能的影响

使用直线加速器产生单电荷载能Ar+

在液氮温度下辐照样品表面

产生缺陷。然后

测量辐照后锆4合金的电化学极化曲线

使用钝化电流密度作为评定腐蚀性能的指标

分析不同注量Ar+离子辐照对锆4合金钝化电流密度的影响。同时使用透射电子显微镜分析不同注量Ar+辐照下锆4合金损伤层的微观结构。实验结果表明:在低离子注量范围内（<3×1014/cm2）

随着辐照量的增加钝化电流密度升高

耐腐蚀性能降低

在中等离子注量范围内（3×1014—1×1016/cm2）

随着辐照量的增加钝化电流密度急速下降

耐腐蚀性能显著提高

在高离子注量范围内（1×1016—1×1017/cm2）

随着辐照量的增加钝化电流密度又开始增加

耐腐蚀性能再次降低。最后

根据原子碰撞理论对实验结果进行了理论分析。

Abstract

In order to investigate the ion irradiation effect on the corrosion resistance of zircaloy 4

specimens were irradiated by Ar+ ions using an accelerator of 150 keV at a dose range from 3×1013 to 1×1017 /cm2 and at liquid nitrogen temperature. Post-irradiation corrosion tests were conducted by potentiodynamic polarization measurement in a 0.5 mol/L H2SO4 water solution at room temperature. Transmission electron microscopy (TEM) was employed to examine the change of microstructures in the irradiated surface. The potentiodynamic tests showed that with the irradiation dose increasing

the surface passive current density underwent three stages: increased

decreased and increased once again. The mechanism of the corrosion resistance transformation was attributed to defect accumulation

amorphous phase formation and recrystallinization in the irradiated surface.

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