铅青铜粉末与碳钢钢背松装烧结工艺研究

用正交试验法研究松装烧结工艺参数对铅青铜——钢背双金属材料粘接强度的影响。通过对实验数据的分析计算,得出了各参数的显著性、参数间的交互作用、工程平均估计和工程平均半径。     

有机硅-丙烯酸酯超耐候性外墙涂料的研制

以三甲基氯硅烷改性后的MATS和丙烯酸酯类化合物为共聚单体，合成出了有机硅质量分数达35％的硅—丙乳液，以此乳液为基料配制的乳胶涂料具有优良的耐候性、耐水性、耐擦洗性和耐沾污性等性能，研究了原料配比对有机硅氧烷改性产物的影响，以及乳化剂种类及用量、反应温度及时间、加料方式等因素对乳液稳定性的影响。     

左手材料经典结构双负特性及后向波性质探究

通过对左手材料经典杆环结构的理论推导,证明了其介电常数与磁导率双负的特性。提出其后向波性质为左手材料所有奇异性质的基点,并从熵条件的角度探讨了产生后向波的机制,证明了左手材料波前与能量传播的关系,间接说明其不违背能量守恒,证明了左手材料存在性。展望了左手材料的未来三大应用。     

Inhomogeneous deformation and recrystallization behavior of through-thickness tantalum sheet under one-cycle clock-rolling

Effects of low clock rolling passes on through-thickness deformation and recrystallization behavior of the Ta sheet have been investigated. The clock-rolled samples with one cycle (8 passes) were systematically examined under different thickness layers. X-ray diffraction (XRD) and X-ray diffraction line profile analysis (XLPA) showed that the extremely inhomogeneous texture evolution generated and the bulk stored energy existed in the through-thickness clock-rolled Ta sheet after 8 passes. The electron backscatter diffraction (EBSD) results revealed the misorientation of the grains in the deformed samples, indicating that grain subdivision in the surface and center layer was more serious than that in the quarter layer. High intensities misorientation indicates the presence of microshear bands in the surface and center layer. During annealing, the difference of the stored energy and the fragmentation of deformation microstructure along the thickness led to a heterogeneous driving force for the nucleation of the grains, resulting in subsequent different recrystallization rate in the different regions of the sample.     

材料力学内力图分析教学方法研究

掌握杆件内力的计算方法和内力图的绘制方法是学好材料力学的基础和关键,是材料力学课程教学的难点和重点．根据《材料力学》课程内力图的教学实践,在结合传统教学方法的基础上,开展了教学新方法的研究和探讨．实践证明新教学方法效果明显,有助于提高学生分析问题与解决问题的能力．     

Materials as activator of future global science and technology challenges

The aim of this statement is to give a contribution towards the future, where for all, materials are the driven force for the transformations we aim to reach and for which a global common house is imperative to be established, as the International Union of Materials Research Societies, IUMRS aims to be the central vehicle for such, aiming to boost innovation to its maxima, without compromising vital global principles of opening science to the world.This is consolidated by 4 main principles: Circ...     

SiO2气凝胶复合保温材料在船舶冷库上的应用

分析了保温材料对于船舶冷库的作用,介绍了SiO2气凝胶机理及其应用情况,根据船舶敷设机构,进行了SiO2气凝胶复合保温材料典型工艺试验,试验表明该材料可以有效改善冷库保温性能。     

High-throughput experimental tools for the materials genome initiative

The materials innovation infrastructure in the materials genome initiative(MGI)consists of three major components:computational tools,experimental tools,and digital data.This article will review experimental tools for high-throughput,high spatial resolution measurements of several materials properties such as elastic modulus,thermal conductivity,specific heat capacity,and thermal expansion.Application of these tools on compositionvarying samples such as diffusion multiples can be used to quickly and efficiently obtain composition–phase–structure–property relationships for materials property database establishment.They can also be used in conjunction with theoretical modeling to find and explain unusual effects to improve the predictability of models.More micron scale resolution experimental tools are in development.These high-throughput tools will be an essential part of MGI.     

超塑材料变分理论的应用研究

本文探讨了变分理论在超塑成形方面的应用,建立了适合超塑性材料的变分理论的基本方程。并以超塑性材料轴对称镦粗为例验证了这些方程的正确性。     

蒙药材阿布嘎的民族植物学研究

以民族植物学的观点介绍阿布嘎[荠菜Capsella bursa-pastoris(L．)Medic．]的食用和药用历史，分析阿布嘎的营养与药用价值以及现代人热衷于阿布嘎的原因，探讨了阿布嘎民族植物文化．认为，阿布嘎集美食、营养、保健、药用于一体，是值得开发的一种重要野菜．