核电锆管的表面改性技术

锆合金已被广泛用于核反应堆的堆芯结构材料,但其耐腐蚀性能和耐磨性能制约着使用寿命,采用合适的表面处理技术可以改善其表面完整性.通过对近几年核用锆合金表面处理的研究进行归纳总结,简单介绍了锆合金的研发进展,并着重对能提高锆合金耐腐蚀性能和耐磨性能的表面处理技术进行了综述,如喷丸处理、超声冲击强化、冷轧、渗氮和渗铝等.总结了各种表面处理技术对锆合金的微观结构和性能的影响,并介绍了结构和性能之间的联系.最后对锆合金表面处理技术进行了讨论和展望.

Surface Modification Technique of Nuclear Power Zirconium Tube

Zirconium alloy has been widely used in nuclear reactor core structure materials, but the service life is restricted by its corrosion resistance and wear resistance. The surface integrity can be improved by adopting appropriate surface modification technique. In this paper, the literatures on the surface treatment of nuclear zirconium alloys in recent years were summarized. The development progress of zirconium alloys was briefly introduced and the surface treatment techniques that can improve the corrosion resistance and wear resistance of zirconium alloys were reviewed, such as shot peening, ultrasonic impact peening, cold rolling, nitrogen implantation and aluminum implantation. The effects of various surface treatment techniques on the microstructure and properties of zirconium alloys were summarized and the relationship between the structure and properties was introduced. Ultimately the surface modification techniques of zirconium alloy were discussed and prospected.