Iron-based multi-phase environmentally-friendly hydrogen storage material

Abstract

The invention provides an iron-based multi-phase environmentally-friendly hydrogen storage material, which is prepared by the following method: the Ti, V, Fe, Zr, Ce and Gd metal raw materials are weighed according to a preset chemical formula; then the Ti, V, Fe, Zr, Ce and Gd metal raw materials are vacuum smelted to obtain the first TiVFe alloy ingots; then perform the first heat treatment for the first TiVFe alloy ingots; after the first heat treatment, the first TiVFe alloy ingots are subjected to the first rolling to obtain the second TiVFe alloy ingots; then the second heat treatment is performed on the second TiVFe alloy ingots; and after the second heat treatment, the second TiVFe alloy ingots are subjected to the second rolling to obtain the third TiVFe alloy ingots; and the third TiVFe alloy ingots are then subjected to a third heat treatment.

1 . An iron-based multi-phase environmentally-friendly hydrogen storage material, characterized in that: the iron-based multi-phase environmentally-friendly hydrogen storage material is prepared by the following method:
 Provide Ti, V, Fe, Zr, Ce, and Gd metal raw materials;   The Ti, V, Fe, Zr, Ce, and Gd metal materials are weighed according to a preset chemical formula;   After weighing, the Ti, V, Fe, Zr, Ce, and Gd metal raw materials are vacuum smelted to obtain the first TiVFe alloy ingots;   Perform a first heat treatment on the first TiVFe alloy ingots;   Perform a first rolling on the first TiVFe alloy ingots after the first heat treatment to obtain the second TiVFe alloy ingots;   Perform a second heat treatment on the second TiVFe alloy ingots;   Perform a second rolling on the second TiVFe alloy ingots after the second heat treatment to obtain the third TiVFe alloy ingots;   The third TiVFe alloy ingots is then subjected to a third heat treatment.   
     
     
         2 . The iron-based multi-phase environmentally-friendly hydrogen storage material mentioned in  claim 1 , characterized in that: in this patent, the preset chemical formula is: Ti a V 100-a-b-c-x-y Fe b Zr c Gd x Ce y , in this formula, a=9-10, b=10-12, c=2-3, x=0.5-1, y=1-1.3. 
     
     
         3 . The iron-based multi-phase environmentally-friendly hydrogen storage material mentioned in  claim 1 , characterized in that: after weighing, the Ti, V, Fe, Zr, Ce and Gd metal raw materials are vacuum-melted, specifically: the vacuum degree is less than 0.01 Pa, the melting time is 100-150 min, and during melting, the alloy ingots are flipped once every 200-300 s. 
     
     
         4 . The iron-based multi-phase environmentally-friendly hydrogen storage material mentioned in  claim 1 , characterized in that: the first heat treatment performed on the mentioned first TiVFe alloy ingots is as follows: the heat treatment pressure is lower than 0.01 Pa, the heat treatment temperature is 800-900° C., the heat treatment time is 10-12 h, and the heating rate is 50-60° C./min. 
     
     
         5 . The iron-based multi-phase environmentally-friendly hydrogen storage material mentioned in  claim 1 , characterized in that: the first rolling performed on the first TiVFe alloy ingots after the first heat treatment is as follows: the rolling temperature is 400-500° C., the rolling reduction is 40-45%, and the rolling speed is 0.3-0.4 m/s. 
     
     
         6 . The iron-based multi-phase environmentally-friendly hydrogen storage material mentioned in  claim 1 , characterized in that: the second heat treatment performed on the mentioned second TiVFe alloy ingots is as follows: the heat treatment pressure is lower than 0.01 Pa, the heat treatment temperature is 700-800° C., the heat treatment time is 5-6 h, and the heating rate is 50-60° C./min. 
     
     
         7 . The iron-based multi-phase environmentally-friendly hydrogen storage material mentioned in  claim 1 , characterized in that: the second rolling performed on the second TiVFe alloy ingots after the second heat treatment is as follows specifically: the rolling temperature is 400-500° C., the rolling reduction is 50-55%, and the rolling speed is 0.7-0.9 m/s. 
     
     
         8 . The iron-based multi-phase environmentally-friendly hydrogen storage material mentioned in  claim 1 , characterized in that: the third heat treatment performed on the mentioned third TiVFe alloy ingots is specifically: the heat treatment atmosphere is hydrogen, the heat treatment temperature is 400-500° C., the heat treatment time is 15-20 h, and the heating rate is 50-60° C./min.