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采用电弧熔炼的方法制备Ti掺杂改性的ZrCo贮氚合金,采用X射线衍射(XRD)表征所制备合金及其氢化物的相结构,通过精修方法获得晶格常数,采用恒容等温法测试改性合金的歧化动力学,并采用DSC研究所制备不同含量Ti改性ZrCo合金的氢化物及其歧化产物的近平衡放氢过程。结果表明:Ti掺杂造成ZrCo合金的晶格常数缩减,提升第一步放氢温度,大幅改善抗氢致歧化性能,推测通过Ti掺杂可改变ZrCo合金的可供氢原子占据间隙位尺寸影响间隙位的稳定性,从而影响歧化性能。
The Ti-doped tritium alloy modified by Ti-doping was prepared by arc melting. The phase structure of the prepared alloy and its hydride was characterized by X-ray diffraction (XRD). The lattice constants were obtained by the refined method. The disproportionation kinetics of the modified alloys were tested. Near-equilibrium desorption of hydrides and their disproportionated products from Ti-modified ZrCo alloys prepared by DSC was studied. The results show that Ti doping can reduce the lattice constant of ZrCo alloy, increase the first-stage hydrogen-evolution temperature and greatly improve the hydrogen-induced disproportionation resistance. It is speculated that Ti-doping can change the size of interstitial sites occupied by hydrogen atoms in ZrCo alloy Gap position stability, thus affecting the disproportionate performance.