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研究了Zr57V36Fe7合金的微观组织及相结构,合金吸氢前微观组织由板条状的固溶体晶粒和不规则的类层片状共晶组织组成,主要吸氢相为ZrV2与α-Zr相,吸氢后生成ZrH1.801和V16Zr8H36.29两种主相。测试了合金的活化性能,在723K,1h条件下真空加热后,再经过一次吸氢循环,合金达到最佳活化效果。采用定容法测试了合金吸氢P-C-T(Pressure Composition Temperature)性能,合金有较宽且平坦的吸氢平台,采用范特霍夫方程外推室温平衡压达到10-8Pa量级。
The microstructure and phase structure of Zr57V36Fe7 alloy were investigated. The microstructure of Zr57V36Fe7 alloy was composed of lath-shaped solid solution grains and irregular layer-like eutectic microstructure. The main hydrogen-absorbing phase was ZrV2 and α-Zr phase, Hydrogen generated after the formation of ZrH1.801 and V16Zr8H36.29 two main phases. The activation performance of the alloy was tested. After the alloy was heated under vacuum at 723K and 1h, the alloy got the best activation after a hydrogen absorption cycle. The pressure-bearing alloy P-C-T (Pressure Composition Temperature) was tested by constant-volume method. The alloy has a wide and flat hydrogen absorption platform. The van der Hoeffer equation was used to extrapolate the room temperature equilibrium pressure to the order of 10-8 Pa.