Hydrogen absorption and desorption behavior in Pr–Fe–B type alloys
Hydrogen absorption and desorption behavior in Pr–Fe–B type alloys
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DOI：
10.1063/1.367920
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发表时间：
1998-10
影响因子：
3.2
通讯作者：
Yoon-Bae Kim;W. Jeung
中科院分区：
文献类型：
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作者：
Yoon-Bae Kim;W. Jeung
本研究主要研究了添加Co、Ga、Zr的Pr-Fe-B型合金在HDDR过程中的吸放氢行为，重点研究了合金的析氢和复合反应。在Pr 13 B6 Febal中。合金中，第二次吸氢反应对应于HDDR过程中的重氮化反应，发生在约620 °C，而在氢气氛中低于1000 °C时未观察到重氮化反应。在Co含量为12原子%的合金中，对应于HDDR工艺中的复合反应的第二氢脱附反应在约955 °C发生，并且复合反应的发生温度随着Co含量的增加而进一步降低。Ga添加到Pr 13 B6 Febal。合金还降低了再结合反应温度，对再结晶反应无明显影响。此外，当同时添加Ga和Co时，复合反应温度的降低是显著的。在CO…
In this study, the hydrogen absorption and desorption behavior of Pr–Fe–B type alloys with addition of Co, Ga, and Zr was investigated focusing on the disproportionation and recombination reaction in HDDR process. In Pr13B6Febal. alloy, the second hydrogen absorption reaction which corresponds to the disproportionation reaction in HDDR process occurs at about 620 °C, and the recombination reaction was not observed below 1000 °C in hydrogen atmosphere. In alloys with Co content of 12 at.%, the second hydrogen desorption reaction, which corresponds to the recombination reaction in HDDR process, occurs at about 955 °C and the occurring temperature of the recombination reaction is further decreased with increasing Co content. The Ga addition to Pr13B6Febal. alloy also reduces the recombination reaction temperature and has no significant influence on the disproportionation reaction. Moreover, the lowering of the recombination reaction temperature is remarkable when Ga and Co are added simultaneously. On the co...