摘要
对汽车电池用铸造钒基V_3TiNi_(0.56)合金和V_3TiNi_(0.56)Y_(0.1)Co_(0.1)新型合金试样进行了铸造试验,并进行了储氢性能、电化学性能和显微组织的测试与分析。结果表明:与V_3TiNi_(0.56)合金相比,V_3TiNi_(0.56)Y_(0.1)Co_(0.1)新型合金的最大吸氢量从3.13%增大到3.88%,充放电循环20次后放电容量保有率从23%增大到91%,合金的枝晶臂细化、枝晶间距变小,合金的储氢性能和电化学性能得到明显提高。合金元素Y和Co的添加,有利于提高汽车电池用铸造钒基V_3TiNi_(0.56)合金的储氢性能和电化学循环稳定性能。
Casting tests for V3TiNi0.56 and V3TiNi0.56Y0.1Co0.1 alloys used in automobile batteries were carried out, and the hydrogen storage performance, electrochemical property and microstructure of the alloys were tested and analyzed. The results show that compared with V3TiNi0.56 alloy, the maximum hydrogen absorption capacity of V3TiNi0.56Y0.1Co0.1 alloy increases from 3.13% to 3.88%, and the retention rate of discharge capacity of V3TiNi0.56Y0.1Co0.1 alloy increases from 23% to 91% after 20 times of charge-discharge cycles. The dendritic arm of V3TiNi0.56Y0.1Co0.1 alloy is refined, and the interval for dendritic crystals of V3TiNi0.56Y0.1Co0.1 alloy is decreased,with the hydrogen storage and electrochemical properties of the alloy improved significantly. The addition of Y and Co as alloying elements can improve the hydrogen storage and electrochemical cycling stability of V3TiNi0.56 alloy applied to automobile batteries.
作者
王酉方
赵越
Wang Youfang;Zhao Yue(School of Automotive Engineering, Changchun Vocational Institute of Technology, Changchun 130000, Jilin, China;College of Materials Science and Engineering,Dalian University of Tecluiology,Dalian 116024,Liaoning,China)
出处
《钢铁钒钛》
CAS
北大核心
2019年第1期53-56,共4页
Iron Steel Vanadium Titanium
基金
吉林省教育厅职业教育与成人教育教学改革研究课题(编号:2015ZCY095)
