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钯材的高速载氘对金属-氢同位素系统和氢能应用领域的研究具有重要的意义。本文研究了以海绵钯粉为原料通过脉冲烧结制备多孔钯块材的新工艺,用SEM和XRD分析了制备的多孔钯块材的微观结构形貌和相组成,并进一步研究了多孔钯块材的气体载氘行为。结果表明,采用脉冲烧结工艺可制备出孔隙率为81.6%的纯净多孔钯块材,氘在该钯材中的初始载入速度较高但迅速降低,80s内即可完成约90%氘的载入;载氘开始约10s后,氘的载入速度下降到较低的水平并缓慢衰减。
The high deuterium loading of palladium material is of great significance for the study of metal-hydrogen isotope systems and hydrogen energy applications. In this paper, a new process for preparing porous palladium block by pulse sintering using sponge palladium powder as raw material was studied. The microstructure and phase composition of porous palladium block were analyzed by SEM and XRD, and the porous palladium block The deuterium gas loading behavior. The results show that the pure porous palladium block with the porosity of 81.6% can be prepared by pulse sintering process. The initial loading rate of deuterium in the palladium material is high but rapidly decreased, and the loading of deuterium can reach 90% deuterium within 80s After about 10 s deuterium loading, the deuterium loading rate dropped to a lower level and decayed slowly.