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要: 研究了氧化铝微粒增强化学镀镍 (铜 , 磷 ) 合金涂层的性能.在Al2 O3和Ni (Cu , P) 合金共沉积过程中 , Al2 O3在溶液中的加入量增多 , Al2 O3在镀层中的复合量逐渐提高 ;Al2 O3的复合 , 显著改变了Ni (Cu , P) 合金沉积层的组织与性能 , 使Ni (Cu , P) Al2 O3复合材料具有更高的硬度,耐磨性和抗氧化性... was investigated. Alumina particles were co-deposited with the deposition of Ni (Cu, P) alloy, the deposited volume increased gradually with particle addition in the bath. The co-deposition of alumina......
) NaCl溶液中的电化学腐蚀行为及在干摩擦条件下的耐磨损性能.研究结果表明:在5% HCl溶液中,低镍铸铁耐腐蚀性能与高镍铸铁的耐腐蚀性能相当;同时,所有镍铸铁试样在3.5% NaCl盐溶液中的电化学腐蚀行为都出现了氧扩散的平台,并且自腐蚀电流密度与自腐蚀电位随着Ni,Cr和Cu含量的降低而不同程度地增加;在干摩擦条件下,低镍铸铁的耐磨损性能接近或高于高镍铸铁的耐磨损性能,其主要的磨损机制是黏着磨损,同时... of the addition of Ni, Cr and Cu, the corrosion current density and the corrosion potential are increased to some extent. Under the conditions of the dry friction, the wear resistance of low-nickel......
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Trans. Nonferrous Met. Soc. China 22(2012) 1140-1145 Hydrogen generation from coupling reactions of AlLi/NaBH4 mixture in water activated by Ni powder LIU Shu, WANG Liang-liang, YAO Jun, SUN Wen... of AlLi/NaBH4 mixture activated by common Ni powder in water for hydrogen generation was investigated. The composition presents good hydrogen generation performance and an optimized Al-10% Li-10% Ni/NaBH4......
.结果表明:在电沉积Ni过程中,对镀层实施机械研磨使镀层表面变得光滑,镀层孔隙率降低,致密度增加,镀层厚度减小,机械研磨促进镀层表面与内部晶粒尺寸的明显细化及镀层内部的压应力形成,从而导致镀层的耐蚀能力显著增强,抗拉强度与硬度显著提高. 关键词:电镀;机械研磨;镍镀层;耐蚀性 (Edited by LI Xiang-qun) Foundation item: Project... Trans. Nonferrous Met. Soc. China 22(2012) 1989-1994 Effect of mechanical attrition on microstructure and property of electroplated Ni coating BAN Chao-lei1,2, SHAO Xin1,2, MA Jie1,2, CHEN Hui1,2 1......
生α相和γ′-Ni3(Al, Ti ,Nb)相,且在晶界区补充析出粒状M23C6碳化物,起到强化合金的作用. 关键词:镍基高温合金;K4648;α-(Cr, Ni)相;M23C6碳化物;显微组织 中图分类号:TG 132.3; TG 113 文献标识码: A Microstructure of high Cr... of Nonferrous Metals, 2005, 15(10): 1566-1571. [15] 郑 亮, 谷臣清, 张国庆. Ta对低Cr高W铸造镍基高温合金显微组织的影响[J]. 稀有金属材料与工程, 2005, 34(2): 194-198.ZHENG Liang, GU Chen-qing, ZHANG Guo-qing. Effect of Ta addition......
) were used to study the influence of a He atom on the movement of the edge dislocation in Ni. First, the calculated Burgers vector distribution shows that the equilibrium dissociation distance... and the edge dislocation offers fast-diffusion path for the migration of a He atom. Key words: movement; edge dislocation; He; atomic simulation; Ni 1 Introduction It is known that the crystalline......
it is Ni-Cu solid solution at the Ni/Cu interface. The tensile shear strength of the joints is improved by the addition of Ni interlayer. The joint with Ni interlayer annealed at 500 °C exhibits... is identified to be Al3Ni, is formed at the interface of Al/Ni. In addition, there exist some voids on the Ni interlayer due to the difference in the atomic fluxes across the Al/Ni interface during......
观力学性能也不同[15].ZHU等[16]用分子模拟方法模拟单晶镍中γ/γ′相界面的结构动力学,结果发现,界面失配应力影响γ/γ′相界面的稳定性.JANG等[17]采用分子动力学研究碳与乙烯基酯之间的界面力学性能.发现碳表面附近聚合物的形成影响碳与乙烯基酯之间载荷的传递.张岩等[18]运用分子动力学研究Cu/Ni纳米晶薄膜的力学性能,结果表明,在塑性变形阶段依靠界面及镍原子间较强的相互作用力能够阻...距离;为镶嵌能;为除第i个原子以外其他所有原子j的核外电子在原子i处所产生的电子云密度()之和.函数的具体形式和参数可以通过ACKLAND等[23]提出的方法拟合得到. 图1 不同晶态镍分子动力学模型 Fig. 1 Molecular dynamics model of single crystal Ni (a), polycrystalline Ni (b......
Ni单掺杂相比,Ni-B-BiVO4样品的光吸收向长波长方向偏移;且N-B共掺杂后,样品中V4+ 和表面羟基氧增多.当最佳Ni掺杂量为0.30%(质量分数)时,所制备的0.3Ni-B-BiVO4在50 min内对甲基橙的降解率达95%左右,且该样品能有效降解亚甲基蓝(MB),金橙II号(AOII)和罗丹明B(RhB)溶液.共掺杂样品活性的提高主要是B与Ni的协同作用所致. 关键词:共掺杂;镍掺杂...Trans. Nonferrous Met. Soc. China 27(2017) 2022-2030 Effects of Ni doping contents on photocatalytic activity of B-BiVO4 synthesized through sol-gel and impregnation two-step method Min WANG, Guang......