一种超导铌板制备工艺研究

本文对RRR300超导铌板制备工艺进行了探究,设计了包括锻造工艺、轧制工艺、热处理工艺在内的3个工艺方案,并在900℃/60 min和950℃/60 min两个成品热处理工艺条件下,测试了RRR300超导铌板的RRR值、微观组织与机械性能。最终确定了工艺方案2为最优工艺,可制备出RRR值300,硬度≤50HV、抗拉强度在140~175 MPa、屈服强度确定在50~75 MPa、延伸率≥50%、晶粒度在G=5.5~6.0级的超导铌板,并可应用于工业化生产。     

Effect of preparation conditions on the electrochemical properties of spherical Ni(OH)_2

1IntroductionSpherical nickel hydroxide(Ni(OH)2)is widely used as the active material of the positive electrode inalkaline recharged batteries such as Cd-Ni,Fe-Ni,Zn-Ni and MH-Ni batteries.It determines the mainproperties of this kind of batteries.Used as a kind of newdevelopedi mpetus for electromotive tools,elec-tromotive aid bicycles and electromotive automobiles,the high performance MH-Ni battery has gained at-tention fromall over the world.Recently,compared with Japan,the US and s…