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Preparation, Morphology and Damping Property of PU/UP Interpenetrating Polymer Networks

Dongyan TANG , Liangsheng QIANG , Zheng JIN , Liancheng ZHAO

材料科学技术(英文)

Interpenetrating polymer networks (IPNs) composed of acrylate-modified polyurethane (PU)/unsaturated polyester (UP) resin $via$ simultaneous polymerization with various component ratios of PU/UP were prepared. The polymerization processes of IPNs were traced through infrared spectrum (IR) techniques...

关键词: Interpenetrating polymer networks (IPNs) , null , null , null

3 0CrMnSi 2A钢飞机主梁疲劳断裂分析

马康民 , 宣建光 , 康进兴

材料工程 doi:10.3969/j.issn.1001-4381.2001.10.012

用扫描电镜观察了某型飞机机翼主梁的疲劳断口,用疲劳条带估算了裂纹扩展寿命,并用Zheng-Hirt公式估算出裂纹尖端应力强度因子范围,估算结果与实验测定值十分接近,从而为研究老龄飞机的使用寿命,进行了有益的探索.

关键词: 机翼主梁 , 30crMnSiNi2A , 疲劳裂纹扩展寿命

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

1998 COMPREHENSIVE TABLE OF CONTENTS

中国腐蚀与防护学报

N。1Atmospheric Corrosivlty for Steels………………………………………………… .LIANG Caideng HO[I i。-tat(6)Caustic Stress Corrosion Cr。king of Alloy 800 Part 2.The Effect ...

关键词:

Monte Carlo simulation of angular distribution and fractionation in the zero-fluence isotope sputtering

Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms

A static Monte Carlo simulation program has been used to study the influence of primary and secondary knock-on atoms on the angular distribution and the fractionation, for zero-fluence sputtering of Mo-92-Mo-100. At 10 keV Xe ion energy, calculations show that significant depth-dependent momentum as...

关键词: mo-92-mo-100;targets

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

Fe80Si9B11非晶合金薄带热膨胀特性和结构弛豫分析

李红 , 孙克 , 李艳萍 , 石毅 , 郭金花 , 卢志超

金属功能材料

提出了采用推杆式热膨胀仪测试非晶合金薄带热膨胀特性的新方法.分析了Fe80Si9B11非晶薄带的热膨胀曲特性和非晶合金晶化过程.根据R.G.Zheng理论分析了结构弛豫中自由体积比变化,发现自由体积比曲线出现双峰.结合晶化前发生相分离的理...

关键词: 铁基非晶薄带 , 热膨胀系数 , 自由体积比 , 结构弛豫

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