铪替代银-铟-镉合金控制棒价值分析

随着我国锆铪分离技术的突破，核级海绵铪已经实现了工业规模的生产，为国内核电厂使用铪作为控制棒材料奠定了物质基础。本文从控制棒价值及控制棒材料燃耗特性角度，分析天然铪（Hf）、硼化铪（HfB2）、氢化铪（HfHX）、氧化铪（HfO2）4种材料替代银-铟-镉合金（AIC）控制棒的可行性，分析结果表明:从增加控制棒价值的角度，替代AIC的优先顺序为HfB2>HfH3>Hf；从工程应用角度，应用于国内主流核电厂时，替代AIC的首选铪材料为Hf。 

Analysis of Control Rod Worth of Hafnium Instead of Silver-Indium-Cadmium Alloy

With the breakthrough of the separation technology of zirconium and hafnium, the nuclear-level sponge hafnium has been produced on an industrial scale, which promotes the hafnium for traditional control material replacement in the domestic nuclear power plants. From the perspective of control rod worth and material burnup properties, this paper performed neutronic analysis and discussed the possibility of replacing AIC control rod with natural hafnium(Hf), hafnium boride(HfB2), hydrogenated hafnium(HfHX) and hafnium oxide(HfO2). The analysis results indicated that: from the perspective of increasing the control rods worth, the priority of replacing AIC is Hf B2>Hf H3>Hf;From the perspective of engineering application, Hf would be applied to domestic mainstream power plants as the next generation control rod materials for Silver-Indium-Cadmium replacement(AIC).