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Preparation and Tribological Properties of Ni-P Electroless Composite Coating Containing Potassium Titanate Whisker

Yaxu JIN

材料科学技术(英文)

Nickel-phosphorus (Ni-P) composite coatings containing potassium titanate (K2Ti6O13) whiskers (PTWs) were prepared by electroless plating. The surface morphology and component of coatings were investigated by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX), respecti...

关键词: Potassium titanate whiskers , 化学镀 , 复合镀层 , 摩擦学性能

EFFECTIVE-MEDIUM THEORY OF PIEZOELECTRIC COMPOSITES

Journal of Applied Physics

Based on the developed multiple-scattering theory [C.-W. Nan and F. S. Jin, Phys. Rev. B 48, 8578 (1993)], an effective-medium theory (EMT) is proposed to treat coupled electromechanical behavior in composite media. The explicit relations for determining effective beha...

关键词: electromechanical properties;ceramics

Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals

Acta Materialia

In a first report [Jin ZH.. Gumbsch P, Ma E, Albe K, Lu K, Hahn H, et al. Scripta Mater 2006;54:1163], interactions between screw dislocation and coherent twin boundary (CTB) were studied via molecular dynamics simulations for three face-centered cubic (fcc) metals, Cu...

关键词: dislocation;slip;twinning;twin grain boundary;molecular dynamics;molecular-dynamics simulation;grain-boundaries;nanocrystalline;materials;cross-slip;rate sensitivity;deformation;copper;strength;aluminum;fcc

YBCO薄膜中自旋极化准粒子的注入效应

曹春海 , 杨名 , 张世远 , 杨森祖 , 崔旭高 , 尤立星 , 吉争鸣 , 康琳 , 许伟伟

低温物理学报 doi:10.3969/j.issn.1000-3258.2003.03.002

采用Nd0.7Sr0.3MnO3/SrTiO3/YBa2Cu3O7-δ的异质结构,研究了自旋极化准粒子的注入效应.在56μm宽的YBCO膜条上成功地制备了与超导膜条同样宽度但不同长度的六个注入结区,长度L分别为80μm, 40μm, 20μm, 10μm, 5μm和2μm.80nm厚的YBCO薄膜在...

关键词: 注入效率 , 自旋准粒子 , 巨磁阻 , 异质材料