18MeV质子辐照对Zr-Sn-Nb合金性能影响的研究

Study of Effect of 18MeV Proton Irradiation on the Property of Zr-Sn-Nb Alloys

作者通过HZ B串列加速器用能量 18MeV的质子 ,研究了两种Zr Sn Nb合金的质子辐照效应 .结果表明 ,经 1.5× 10 14 /cm2 注量质子辐照处理后 ,其样品的电阻率升高 ,而显微组织没有明显的变化 .通过计算在此能量和注量下锆合金的初级撞出能量为 770keV ,足以产生级联碰撞 ,致使样品中的原子移位而生成点缺陷 ,从而电阻率上升 。

The different composition Zr-Sn-Nb alloy specimens were irradiated using a tandem accelerator by 18MeV proton at room temperature to injection capacity of 1.5×10 14cm -2 at 1mm depth. It was observed that resistance ratio was increased by proton irradiation. The increasing point defects by proton irradiation were thought to be major reason of this phenomenon. TEM observation showed that microstructure was not changed by proton irradiation.