Computer simulation of grain boundaries(GB) was carried out in Fe and ordered alloys NiAl and FeAl with B2 superlattice. In this work symmetrical tilt grain boundaries =5[100](012) and = 5[100](013) are studied. The...Computer simulation of grain boundaries(GB) was carried out in Fe and ordered alloys NiAl and FeAl with B2 superlattice. In this work symmetrical tilt grain boundaries =5[100](012) and = 5[100](013) are studied. The atomic interaction has been described by Morse empirical central- force potentials.The atomic structure and energy of GB were investigated by means of construction of -surface using full atomic relaxation by method of molecular statics. It is shown that = 5 tilt GBs in Fe, Ni3Al and NiAl have several steady states. Comparison of our results with geometrical model of coincidence site lattice (CSL) was carried out. GBs in model CSL are unstable, the stabilization is achieved by additional displacement at some vector along the plane of defect.展开更多
将麦克斯韦方程和绕组函数法相结合,得到单边直线感应电机(single linear induction motor,SLIM)的初级、次级基波和边端效应波绕组函数。由绕组函数理论计算出电感、运动电势系数,建立电压和磁链方程。由初、次级能量关系得到推力方程...将麦克斯韦方程和绕组函数法相结合,得到单边直线感应电机(single linear induction motor,SLIM)的初级、次级基波和边端效应波绕组函数。由绕组函数理论计算出电感、运动电势系数,建立电压和磁链方程。由初、次级能量关系得到推力方程并进一步求解相关特性量。对不同工况的暂态和稳态特性进行分析。将大功率电机全过程中相电流、推力、效率的计算值与测量值进行比较。试验结果表明,绕组函数法能较合理地描述SLIM特性,具有一定实用性。展开更多
为提高硅藻土矿利用价值,进行了微波作用下硅藻土矿的稳态酸浸提纯研究。研究结果表明,微波作用下,随着反应温度、硫酸浓度、液固比的升高以及反应时间的延长,硅藻土矿铁的浸出率增加;根据对主要影响因素的正交试验结果,确定了微波作用...为提高硅藻土矿利用价值,进行了微波作用下硅藻土矿的稳态酸浸提纯研究。研究结果表明,微波作用下,随着反应温度、硫酸浓度、液固比的升高以及反应时间的延长,硅藻土矿铁的浸出率增加;根据对主要影响因素的正交试验结果,确定了微波作用下硅藻土稳态酸浸提纯工艺的较佳条件为温度90℃、H2SO4浓度40%、反应时间60 m in。展开更多
文摘Computer simulation of grain boundaries(GB) was carried out in Fe and ordered alloys NiAl and FeAl with B2 superlattice. In this work symmetrical tilt grain boundaries =5[100](012) and = 5[100](013) are studied. The atomic interaction has been described by Morse empirical central- force potentials.The atomic structure and energy of GB were investigated by means of construction of -surface using full atomic relaxation by method of molecular statics. It is shown that = 5 tilt GBs in Fe, Ni3Al and NiAl have several steady states. Comparison of our results with geometrical model of coincidence site lattice (CSL) was carried out. GBs in model CSL are unstable, the stabilization is achieved by additional displacement at some vector along the plane of defect.
文摘将麦克斯韦方程和绕组函数法相结合,得到单边直线感应电机(single linear induction motor,SLIM)的初级、次级基波和边端效应波绕组函数。由绕组函数理论计算出电感、运动电势系数,建立电压和磁链方程。由初、次级能量关系得到推力方程并进一步求解相关特性量。对不同工况的暂态和稳态特性进行分析。将大功率电机全过程中相电流、推力、效率的计算值与测量值进行比较。试验结果表明,绕组函数法能较合理地描述SLIM特性,具有一定实用性。
文摘为提高硅藻土矿利用价值,进行了微波作用下硅藻土矿的稳态酸浸提纯研究。研究结果表明,微波作用下,随着反应温度、硫酸浓度、液固比的升高以及反应时间的延长,硅藻土矿铁的浸出率增加;根据对主要影响因素的正交试验结果,确定了微波作用下硅藻土稳态酸浸提纯工艺的较佳条件为温度90℃、H2SO4浓度40%、反应时间60 m in。
