Preparation of New Vanadium Based Solid Solution Hydrogen Storage Material by Ultrasonic Stirring Assisted Casting
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摘要: 为了改进钒基固溶体贮氢材料的性能,采用超声搅拌辅助铸造法制备新型钒基固溶体贮氢材料V3TiNi0.56 Co0.1Al0.2,并进行物相组成、显微组织、吸放氢性能和耐腐蚀性能的测试与分析。结果表明,该新型钒基固溶体贮氢材料由V基固溶体相和少量的TiNi相、Ti2Ni相组成,具有较佳吸放氢性能和耐腐蚀性能,室温最大吸氢量为1.781%、室温放氢平台压力为0.46 MPa,腐蚀电位较V3TiNi0.56正移709 mV。
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关键词:
- 钒基固溶体贮氢材料 /
- V3TiNi0.56Co0.1Al0.2 /
- 超声搅拌 /
- 吸放氢 /
- 耐腐蚀
Abstract: In order to improve the properties of V-based solid solution hydrogen storage materials,ultrasonic stirring assisted casting method was used to prepare a new V-based solid solution hydrogen storage material V3 TiNi0.56Co0.1Al0.2.The phase compositions,microstructure,hydrogen absorption and desorption properties and corrosion resistance of the material were tested and analyzed.The results show that the new material consists of V-based solid solution phase,small amount of TiNi and Ti2 Ni phases,and it has favorable hydrogen absorption and desorption properties and corrosion resistance,of which the maximum hydrogen absorption capacity at room temperature is 1.781% and the plateau pressure of hydrogen desorption at room temperature is 0.46 MPa,and the corrosion potential shifts positively by 709 mV in comparison to V3 TiNi0.56.
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