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Effect of niobium substitution on microstructures and thermal stability of TbCu7-type Sm-Fe-N magnetsGuiyong Wu1,Hongwei Li1,Dunbo Yu1,Kuoshe Li1,Wenlong Yan1,Chao Yuan1,Liang Sun1,Yang Luo1,Kun Zhang1,21. National Engineering Research Center for Rare Earth Materials,General Research Institute for Nonferrous Metals,Grirem Advanced Materials Co.Ltd.2. Key Laboratory of Microgravity(National......
Effect of niobium substitution on microstructures and thermal stability of TbCu7-type Sm-Fe-N magnetsGuiyong Wu1,Hongwei Li1,Dunbo Yu1,Kuoshe Li1,Wenlong Yan1,Chao Yuan1,Liang Sun1,Yang Luo1,Kun Zhang1,21. National Engineering Research Center for Rare Earth Materials,General Research Institute for Nonferrous Metals,Grirem Advanced Materials Co.Ltd.2. Key Laboratory of Microgravity(National......
Interfacial Microstructure and Properties of a Vacuum Hot Roll-bonded Titanium-Stainless Steel Clad Plate with a Niobium InterlayerZongan LUO1,Guanglei WANG1,Guangming XIE1,Lipeng WANG2,Kun ZHAO11... to bond pure titanium(Ti)plate to a 304 stainless steel(SS)plate with a niobium(Nb)interlayer,with the aim of producing a high-quality Ti-SS clad plate.The roll-bonding process was performed at diferent......
Effect of Niobium on Microstructure and Properties of the CoCrFeNb_xNi High Entropy AlloysHui Jiang,Li Jiang,Dongxu Qiao,Yiping Lu,Tongmin Wang,Zhiqiang Cao,Tingju LiKey Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology摘 要:A series......
ICP-AES法测定精选铌钽矿中高含量Nb_2O_5,ZrO_2及稀土总量 崔爱瑞1,张弘强1 (1.稀土冶金及功能材料国家工程研究中心,内蒙古包头014030;2.包头稀土研究院,内蒙古包头014030) 摘要:样品经氢氧化钠-过氧化钠熔融分解,在酒石酸存在下,用盐酸酸化,加入几滴氢氟酸,使铌,锆充分溶解,而稀土在酒石酸存在下不会生成氟化稀土沉淀.经稀释后,以ICP-AES法测定.测定范围:Nb_2O_5 1%~10%;稀土氧化物总量3%~30%;ZrO_2 1%~60%. 关键词:精选铌钽矿; 高含量Nb_2O_5; ZrO_2; 稀土总量; niobium tantalumconcentrate; high content Nb_2O_5; ZrO_2; ∑REO; [全文内容正在添加中] ......
微波消解-电感耦合等离子体原子发射光谱法测定矿石样品中铌钽倪文山1,张萍1,姚明星1,李贤珍1(1.河南省郑州市地质科学院 郑州矿产综合利用研究所)摘 要:通过微波加热,氢氟酸溶解矿石样品,再以酒石酸溶液处理,使铌,钽完全进入溶液.以铌316.340{106}nm光谱线和钽268.517{125}nm光谱线为分析线,在选定的仪器参数下用电感耦合等离子体原子发射光谱法(ICP-AES)测定了溶液中的铌和钽.铌,钽原子发射光谱强度与ρ(Nb2O5)和ρ(Ta2O5)在0~6μg/mL范围内呈良好的线性关系,铌,钽的......
Fabrication of niobium doped Pb(Zr,Ti)O3 fibers by viscous polymer processing XU Ling-fang(徐玲芳)1, CHEN Wen(陈 文)1, 2, ZHOU Jing(周 静)1, 2, LI Jun(李 君)1, T. W. Button3, ZHANG Dou(张 斗)3..., and results in high directional and compact fibers. 2 Experimental Niobium doped Pb(Zr,Ti)O3 (PZT-5) piezoelectric ceramic powder is required with mean particle size lower than 1 μm for the VPP......
熔盐电脱氧制备金属铌的研究谢大海1,王兴庆1,陈发允1(1.上海市上海大学材料科学与工程学院)摘 要:采用熔盐电脱氧法,以熔融的CaCl2-NaCl为电解质,经粉末压制烧结后的Nb2O5为阴极,石墨为阳极,电解制备了金属铌.并研究了压制压力,烧结温度,电解时间等因素对Nb2O5阴极电脱氧的影响.实验分析表明:阴极脱氧过程是由Nb2O5→NbO2→NbO→Nb且由阴极表面到内部逐步进行的,在适宜条件下可以得到纯度为99.5%以上的金属铌.关键词:熔盐电脱氧制备; 金属铌; Nb2O5; 压制烧结......
Microstructure and mechanical properties of FGBA/BG air cooling bainitic steels containing niobiumChun Feng,Hong-sheng Fang,Bing-zhe Bai,and Yan-kang Zheng Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China摘 要:<正>......
热变形对高铌低碳钢奥氏体→铁素体等温转变影响研究曹建春1,周晓龙1,何寒1,陈文1,刘清友2,雍岐龙2(1.云南省昆明市昆明理工大学材料科学与工程学院2.钢铁研究总院 结构材料研究所,北京 100081)摘 要:针对热变形对铌质量分数为0.17%的低碳钢的奥氏体→铁素体等温相变动力学的影响,通过热模拟试验,分析未变形,875℃变形20%和30%条件下奥氏体向铁素体700℃等温转变的动力学,讨论了热变形和铌对奥氏体→铁素体等温相变的影响机制.研究结果表明:热变形主要通过缩短相变孕育期来加速奥氏体→铁素体等温相变;......