40Ti26Cr26Fe8合金的貯氫能力隨著氮、氧雜質(zhì)含量的增加而明顯降低，主要作用機理如下：氧在V基合金中的溶解抑制了二氫化物相的形成，導致氫容量的降低（主要效應），而氮與鈦結(jié)合形成了新的富氮鈦相，導致了主相成分的變化和晶格參數(shù)的減?。ǘ涡?。;The synergetic effects of nitrogen and oxygen impurities on the micro-area chemical composition, microstructure, and hydrogen storage performance of V-Ti-Cr-Fe alloys were investigated through X-ray diffraction, scanning electron microscopy, optical microscopy, and pressure-composition-temperature (PCT) analyses. Results show that the hydrogen storage capacity of V40Ti26Cr26Fe8 alloy is obviously decreased with increasing the nitrogen and oxygen impurities. The mechanism for the decrease is as follows: the oxygen dissolved in V-based alloys suppresses the formation of the dihydride phase, resulting in the decrease in hydrogen capacity (primary effect); while the nitrogen is bound with titanium forming a new nitrogen-titanium-enriched phase, which results in composition change of the main phase and decreases the lattice parameter (secondary effect)."/>