Effect of alumina on the microstructure and hydrogen production of Al-riched bulk alloys

Wei, Cundi; Wei, Jilun; Liú, Dan; Xu, Shaonan; An, Qi; Xu, Shujun; Wang, Hongchao; Gao, Qian

doi:10.1016/j.cplett.2019.136845

Cited by 5 publications

(1 citation statement)

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“…With the addition of the grain refiners (Ti, Al 2 O 3 , AlTi 5 B etc.) [25][26][27][28], the grain size and morphology of the alloys have changed significantly, which also affects hydrogen production performance. In a word, the effect of doped metals on the alloy is usually to change the GB composition or grain size.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Zn-Doped Al-Rich Alloys for Fast on-Board Hydrogen Production

Liú

Gao

et al. 2020

Crystals

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For the purpose of investigating the effect of Zn replacement of In3Sn on the hydrogen production performance of Al-rich alloy ingots, Al-Ga-In3Sn alloys with various Zn dosages (0–5 wt.%) were prepared by a traditional melting and casting technique. The phase compositions and microstructures were characterized using X-ray diffractometer (XRD) and scanning electron microscope (SEM) with an Energy Dispersed X-ray system (EDS). The SEM results indicate that, with a small amount of Zn instead of In3Sn, the number and total area of grain boundary (GB) phases will decrease gradually, and the average single GB area will eventually stabilize. The distribution of Zn in the alloy is similar to that of Ga, and an area with high Zn content appeared in the high-Zn-doped sample. The melting behaviors of Al with other metals were measured by DSC. The reaction of these alloys and water were investigated at different temperatures. Compared with Al-Ga-In3Sn alloy, low addition of Zn changed the composition of GB phase and increased the maximum hydrogen production rate. The reason for the changes in the hydrolysis reaction of Al with the addition of Zn was discussed.

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Section: Introductionmentioning

confidence: 99%