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稀土Sm对电沉积Ni-P合金镀层的影响 朱文杰1,戴高鹏2,王高芳2,刘素芹2 (1.中南大学材料与工程学院,湖南,长沙,410083;2.湖北襄樊学院化学与生物科学系,湖北,襄樊,441053) 摘要:通过在镀液中添加稀土Sm以改善Ni-P镀层的力学和耐蚀性能,研究了添加SmCl3·6H2O对电沉积Ni-P合金阴极极化和沉积速率的影响,综合考察了镀层表面质量和耐蚀性能.结果表明,在镀液中加入微量SmCl3·6H2O后,镀液阴极极化减少,金属离子的沉积速率,镀层的表观质量以及耐蚀性能都有不同程度的提高. 关键词:SmCl3·6H2O; Ni-P合金电沉积; 阴极极化; 耐蚀性; [全文内容正在添加中] ......
Microstructure and microhardness of directionally solidified NiAl-W eutectic alloyJian-Jun Gao1,2,Zhi-Long Zhao2,Lu-Feng Wei2,Kai Cui2,Lin Liu31. School of Mechanical Engineering and Automation...="ChDivSummary" name="ChDivSummary">The microstructure and microhardness of directionally solidified NiAl-W eutectic alloys at growth rates of 2-25 μm·s-1 were investigated by a Bridgman crystal growing facility......
, the University of Queensland2. School of Science and Engineering, University of the Sunshine Coast摘 要:A cost-effective Fe-enriched eutectic high-entropy alloy(EHEA... Fe35Ni25Cr25Mo15 EHEA was found to be a pseudo eutectic alloy comprised of alternant σ phase(Cr(0.22)Mo0.18Fe0.6-type intermetallic) and face centred cubic(FCC) phase.The lamellar structure in the Fe-enriched......
Trans. Nonferrous Met. Soc. China 22(2012) 42-46 Eutectic modification of A356 alloy with Li addition through DSC and Miedema model CHEN Zhong-wei, MA Cui-ying, CHEN Pei State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China Received 27 December 2010; accepted 21 April 2011 Abstract: Eutectic modification of A356 alloy with Li addition......
eutectic Ag-Cu alloy has been a controversial issue. In this work, the undercooled Ag-39.9 at.% Cu eutectic alloy is solidified under different cooling conditions by using techniques of melt fluxing and copper mold casting. The results show that the coupled eutectic growth of this alloy undergoes a transition from a slow eutectic-cellular growth(ECG) to a rapid eutectic-dendritic growth(EDG)above......
and corresponding eutectic phase content of Mg-Ni alloy Fig.1 Microstructures of as-cast hypoeutectic Mg-Ni alloy with different Ni contents: (a) Mg-3%Ni; (b) Mg-6%Ni; (c) Mg-10%Ni 4.2... dissipation on interface under cyclic loading can be neglected at room temperature, because if the interface markedly causes the energy dissipation, the Mg-10%Ni alloy with a high level of eutectic phase could......
Stored energy analysis of Zn-5Al eutectic alloy in superplastic deformationSHI Zhiqiang, YE Yifu XI Xuekui and LI ShichurKey Laboratory of Liquid Structure and Heredity of Materials, Ministry... energy and the energy release during SPD (superplastic deformation) of a Zn-5 Al alloy were studied. The alloy after rolling process gains more stored energy, and the as-rolled specimen can obtain......
Effect of addition of Al-Si eutectic alloy on microstructure and mechanical properties of Mg-12wt%Li alloyZilong Zhao1,Xuegang Xing2,Jinyu Ma1,Liping Bian1,3,Wei Liang1,3,Yide Wang31. College... that mechanical properties of Mg-12 Li alloy were significantly improved by the addition of Al-Si eutectic alloy. Mg-12 Li-7(Al-Si) alloy shows the highest strength of 196 MPa of the investigated alloys, which......
Phase-field simulation of lamellar growth for a binary eutectic alloy LI Xin-zhong(李新中)1, 2, LIU Dong-mei(刘冬梅)1, SUN Tao(孙 涛)2, SU Yan-qing(苏彦庆)1, GUO Jing-jie(郭景杰)1, FU Heng-zhi(傅恒志)1...; Abstract: Using general multi-phase-field model, detailed microstructures corresponding to different initial lamellar sets were simulated in a binary eutectic alloy......
. The Al2CuMg constituents form in the primary Mg(Zn,Al,Cu)2 phase, and grow along the eutectic microstructure. Key words: Al-Zn-Mg-Cu alloy; eutectic structure; intermetallic particles; phase... phase. The Al7Cu2Fe phase is formed during solidification, and exhibits no change during the subsequent homogenization. The lamellar eutectic structures in the as-cast alloy are shown in Fig.1......
