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compared with secondary dendrites. The λ1/R ranges from 2 to 2.3 with the increase of growth rate. Key words: Sn-Ni alloy; directional solidification; dendrite arm spacing; dendrite tip radius 1 Introduction... solidification process, which is insufficient to describe the dependence of solidification condition on the characteristic length scales in peritectic alloys. In the present work, Sn-Ni peritectic alloy which......
Fabrication of Sn-Ni alloy film anode for Li-ion batteries by electrochemical deposition ZHANG Da-wei(张大伟)1, 2, 3, YANG Chen-ge(杨晨戈)2, DAI Jun(戴 俊)2, WEN Jian-wu(温建武)1, WANG Long(汪 龙...; Abstract: Sn-Ni alloy films for Li-ion batteries were fabricated by electrochemical deposition with rough copper foils as current collectors. The influence of electrochemical......
Study of lithium storage properties of the Sn-Ni alloys prepared by magnetic sputtering technologyXianhua HOU, Shejun HU, Wei PENG, Zhiwen ZHANG and Qiang RU School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China摘 要:Nano-level Sn-Ni alloy thin-film electrode materials prepared by magnetic sputtering......
电沉积Sn-Ni合金锂离子电池负极材料的研制 吴锋1,郭延平1,陈实1,穆道斌1 (1.北京理工大学化工与环境学院环境与能源系,北京,100081) 摘要:通过电沉积锡镍合金制备了Sn-Ni锂离子电池负极材料. 对沉积膜层进行了XRD及EDX分析, 表明得到的合金主要包括Ni3Sn2, Ni3Sn4, Sn等相, 其中Sn/Ni之比约1.5(原子比). 添加剂及工艺优化有利于得到可用作负极材料的均匀沉积膜层. 分析讨论了此膜层电极的充放电过程及循环伏安(CV)曲线, 测量了其循环容量. 电极最大放电容量约为517 mAh·g-1, 20次循环放电容量约144 mAh·g-1, 除第一个循环有一定容量损失外, 前20次充放电效率基本在92%以上. 相对于所沉积的Sn电极, Sn-Ni合金中的Ni提高了电极性能, 特别是充放电循环稳定性. 关键词:Sn-Ni合金电极; 充放电; 电沉......
枪黑色Sn-Ni合金在NaOH溶液中的析氢电催化性能 熊友泉1 (1.南昌航空工业学院材料工程系,江西,南昌,330034) 摘要:为了降低电解制氢的电耗,提高经济效益.作者对枪黑色Sn-Ni合金在NaOH溶液中的析氢电流化性能进行了研究.试验测出的电化学参数表明,在NaOH溶液中电解制氢时,枪黑色Sn-Ni合金的析氢电催化性能比45钢和高硫镍的强很多,而且具有很高的电化学稳定性.用它取代目前工业上使用的45钢和高硫镍作为电解制氢的阴极,可显著降低制氢的生产成本. 关键词:枪黑色Sn-Ni合金; 电解制氢; 电化学催化; 稳定性; [全文内容正在添加中] ......
TiO2对Sn-Ni合金电极析氢性能的影响周宗熠,温林洁,张丽楠,齐海东,李运刚,杨海丽华北理工大学冶金与能源学院现代冶金技术教育部重点实验室摘 要:采用电沉积法在纯铜表面制备了Sn-Ni/TiO2复合电极,采用扫描电镜,能谱仪,激光共聚焦显微镜,阴极极化曲线和电化学阻抗谱对电极的形貌,成分,粗糙度和析氢性能进行了研究.结果表明,随着TiO2质量浓度从0 g/L增加到1.0 g/L,电极的析氢性能先增强后减弱;TiO2质量浓度为0.8 g/L时所制备的Sn-Ni/TiO2电极TiO2含量最高,表面观察到TiO2花粉状团聚物,粗糙度最大,析氢性能最佳.关键词:Sn-Ni/TiO2复合电极;TiO2;电沉积;析氢性能;......
Sn含量对镁合金电镀Sn-Ni合金镀层性能的影响常立民,时杰丽吉林师范大学化学学院摘 要:采用阴极电沉积法在AZ31B镁合金表面上制备了不同Sn含量的Sn-Ni合金镀层.利用X射线荧光光谱仪(XRF),X射线衍射仪(XRD),扫描电子显微镜(SEM),动电位极化曲线(Tafel),电化学阻抗谱(EIS)和硬度仪研究了不同Sn含量时镀层的结构,表面形貌,耐蚀性及硬度.结果表明,镀层中Sn含量对镀层各种性能的影响较大,Sn含量在62.5%时其镀层表面形貌,耐蚀性及硬度最好.关键词:镁合金;Sn含量;Sn-Ni合金;腐蚀性能;......
The Strengthening of Cu-15Ni-8Sn Alloy WANG Ming-Pu1,WANG Yan-hui1,HONG Bin1 (1.School of Material Science and Engineering, Central South University, Changsha China) 摘要:The microstructure, property and relation between them of Cu-15Ni-8Sn alloy are studied by means of TEM and the measurement of hardness. The results show that γ '' metastable phase strengthens alloy because of its ordering......
The Technological Improvements of Aluminum Alloy Coloring by Electrolysis LI Nai-jun1 (1.Teachers College, Shenyang University, Shenyang 110015, P. R. China) 摘要:The technological process of coloring golden-tawny on aluminum alloy by electrolysis was improved in this paper. The optimum composition of electrolyte was found, the conditions of deposition and anodic oxidation by electrolysis were......
光亮锡镍合金镀层的制备及其耐腐蚀性能研究 刘建国1,潘勇2,王孝广2,周益春2,王宝华2 (1.武汉材料保护研究所,湖北,武汉,430030;2.湘潭大学材料与光电物理学院,湖南,湘潭,411105;3.湘潭大学低维材料及其应用技术教育部重点实验室,湖南,湘潭,411105;4.湖南利德材料科技股份有限公司,湖南,株洲,412000) 摘要:采用氨基酸类添加剂在焦磷酸盐体系中电沉积出锡含量67%,颜色与镍镀层相仿,耐腐蚀性能优异的Sn-Ni合金镀层.研究了镀液中添加剂含量变化对锡镍合金镀层含量,表面形貌和耐蚀性的影响.结果表明:当添加荆用量为2.0 g/L时,对镀液的稳定性和镀层锡含量均有显著影响,耐蚀性能显著提高.同时中性盐雾试验测试结果表明,Sn-Ni合金镀层的耐蚀性比单金属镍镀层更为优异. 关键词:电沉积; Sn-Ni合金; 添加剂; 氨基酸; 耐腐蚀性能; 表面形貌......