本文总结了铁素体-马氏体双相钢在磁化过程中由于巴克好森跳跃所产生的巴克好森噪音和磁声发射信号的特征,以及材料的组织结构、应力、应变对信号的影响,探讨了巴克好森信号产生的机制以及与材料变形的内在联系

1.下面有 10 组直齿圆柱齿轮传动设计方案，齿轮精度为 7 级，工作寿命 50000 小时，传动 平稳，主动轮转速 1440r/min，分别选择软齿面材料（例如结构钢正火）和硬齿面材料（例 如合金钢渗碳淬火），比较其承载能力,并分析产生这种结果的原因

7.1 概述 7.1.1 耐火材料的分类 7.1.2 显微结构与生产工艺及制品性能之间的关系 7.2 硅质耐火材料的显微结构特征 7.2.1 SiO2的相平衡 7.2.2 显微结构特征 7.2.3 使用过程中显微结构的演变 7.3 铝硅质耐火材料的显微结构特征 7.3.1 Al2O3 7.3.2 以莫来石为主晶相的耐火制品 7.3.3 以刚玉为主晶相的耐火制品 7.3.4 铝土矿系耐火制品 7.3.5 使用过程中显微结构的演变 7.4 锆铝硅质耐火材料的显微结构特征 7.4.1 ZrO2 7.4.2 熔铸AZS制品 7.4.3 烧结AZS制品 7.4.4 使用过程中显微结构的演变

Lecture 3: Degradable Materials with Biological Recognition Last time: Theory of hydrolytic polymer erosion Enzymatic degradation of polymers Designing Biodegradable Macromolecules Today: Biological recognition in vivo Engineering biological recognition of biomaterials: cell adhesion/migration Reading: S.E. Sakiyama-Elbert and J.A. Hubbell, 'Functional Biomaterials: Design of Novel

①掌握蜗杆传动的特点和应用,理解蜗杆传动常见的分类方法 ②掌握蜗杆传动常见失效形式,了解材料选择和结构类型; ③掌握蜗杆传动的基本参数及变位原理; ④掌握蜗杆传动受力分析(大小、方向)及蜗轮转向的判断;

Brannon-Peppas theory of swelling in ionic hydrogels Original theory for elastic networks developed by Flory and Mehrer, refined for treatment of ionic hydrogels by Brannon-Peppas and Peppas Other theoretical treatments Derivation of ionic hydrogel swelling Model structure of the system

Lecture 19: Biosensors(continued ast time: biosensor device cla Gene array biosensor Today detection methods Detection Elements Macroscopic fluorescence, diffraction, or interference ·what Example: quantum dot-loaded microsphere capture agents QDs show size-dependent luminescence Narrow emission bands from a common excitation wavelength

Lecture 15: Stealth' particles Last time Nano- and micro-particle carriers Today Delivery of drugs to tissue from circulation stealth particles theory and function Reading S. Stolnik et al. 'Long circulating microparticulate drug carriers, Adv. Drug. Deliv. Rev 16,195(1995) Delivery of drugs to tissues via systemic circulation

Lecture 16: Intracellular drug delivery Last time nano- and micro-particle drug carriers Delivery to tissues from systemic circulation Today. Intracellular drug delivery Reading A.S. Hoffman et aL., Design of \smart polymers that can direct intracellular drug delivery, Polym. Adv. Technol. 13, 992-999(2002) Ph gradients and drug delivery: cancer res. 56, 1194(1996): adv drug deliv rev 25, 3 (1997); see asokan minireview

研究背景 固体介质二次电子发射、电荷陷阱、气体解吸附特性 真空中固体介质表面放电现象、诊断及物理机制 基于材料选型和结构优化的表面放电抑制技术