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结构功能一体化的高性能陶瓷材料的研究与开发

江东亮

《中国工程科学》 2003年第5卷第2期页码 35-39

摘要：

从当前新材料的开发和材料科学发展向多功能、小型化、复合化、低成本制备等要求出发, 并就现有高性能陶瓷材料的基本性能和材料制备工艺上的优缺点进行了分析；简要介绍了碳化硅(SiC)陶瓷、添加Nd的钇铝石榴子石(Nd-YAG)陶瓷、掺有稀土的氮化硅(RE-Si₃N₄)陶瓷等几种具有结构和功能一体化高性能陶瓷材料的优良性能,可能的应用以及目前存在的问题,特别是在基础研究和制备科学上今后应予以关注的方面

关键词：结构和功能一体化高性能陶瓷碳化硅 Nd-YAG RE-Si₃N₄

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Solid-state-reaction fabrication and properties of a high-doping Nd:YAG transparent laser ceramic

WU Yusong, LI Jiang, PAN Yubai, LIU Wenbin, AN Liqiong, WANG Shiwei, GUO Jingkun

《化学科学与工程前沿（英文）》 2008年第2卷第3期页码 248-252 doi: 10.1007/s11705-008-0048-6

摘要： High-quality neodymium-doped yttrium aluminum garnet (Nd:YAG) transparent ceramic (4.0 mole percent) was fabricated by a solid-state reaction method and vacuum sintering. The microstructure, optical transmittance, spectral properties and laser performance were investigated. The average grain size of the sample is about 10 ?m. The transmittance of a 2.8-mm thick sample reaches 79.5% at the laser wavelength of 1064 nm. The highest absorption peak is centered at 807 nm and the absorption coefficient is 13.9 cm. The absorption coefficient at the laser wavelength is 0.2 cm. The main emission peak is at 1064 nm and the fluorescence lifetime is 102 ?s. A laser diode (808 nm) whose maximum output is about 1000 mW was used as a pump source and an end-pumped laser experiment was performed. The 1064 nm-CW-laser output was obtained and the threshold is 733 mW. With 998 mW of maximum absorbed pump power, a laser output of 17 mW is obtained with a slope efficiency of 6.1%.

关键词： neodymium-doped yttrium maximum absorbed microstructure fluorescence lifetime threshold

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YAG激光用于发动机缸体淬火技术研究

张国顺,张泰石,杨昭霞,张健,李荷芬,赵爱国

《中国工程科学》 2001年第3卷第3期页码 68-70

摘要：

论述了500W连续YAG激光器用于汽车发动机缸体淬火技术的最新研究成果及实验情况，分析了YAG激光淬火比CO₂激光淬火的诸多优越性

关键词： YAG激光淬火发动机缸体纵向头数横向头数局部加密网纹

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各向异性热压稀土永磁体的热变形机制及微磁结构研究

李卫,朱明刚

《中国工程科学》 2011年第13卷第10期页码 4-12

摘要：

重点研究制备工艺对各向异性热压稀土永磁体性能的影响，探讨了热压永磁体的热变形机理和数学描述模型，并尝试从微磁结构的角度研究各向异性纳米晶Nd-Fe-B获得了最佳磁性能为：Hcj=1 157 kA/m，Br=1.465 T，(BH)max=426 kJ/m³纳米晶Nd-Fe-B磁体。

关键词：纳米晶Nd-Fe-B辐向环热压－热变形各向异性微磁结构

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利用Nd-Fe-B 油泥回收制备高性能烧结磁体的有效方法 Article

尹小文, 岳明, 路清梅, 刘敏, 王峰, 邱玉冰, 刘卫强, 左铁镛, 查善顺, 李绪亮, 衣晓飞

《工程（英文）》 2020年第6卷第2期页码 165-172 doi: 10.1016/j.eng.2019.11.007

摘要：本研究选择了Nd-Fe-B烧结磁体加工过程中产生的无心磨削油泥作为原材料。我们对油泥进行了还原扩散（RD）处理，以合成可供回收的钕磁体（Nd₂Fe₁₄B）粉末。在此过程中，包括钕（Nd）、镨（Pr）、钆（Gd）、镝（Dy）、钬（Ho）和钴（Co）在内的大多数有价值的元素被同时回收。通过调节反应温度和油泥中的钙含量，我们系统地研究了Nd-Fe-B油泥回收过程中的反应机理。我们在回收的Nd₂Fe₁₄B颗粒中掺杂了含量为37.7 wt%的Nd₄Fe₁₄B粉末，用以制备Nd-Fe-B烧结磁体

关键词： Nd-Fe-B磨削油泥再生烧结磁体钙还原扩散富稀土合金掺杂

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Fertilizer drawn forward osmosis as an alternative to 2nd pass seawater reverse osmosis: Estimation of

《环境科学与工程前沿（英文）》 2021年第15卷第6期 doi: 10.1007/s11783-021-1428-0

摘要：

• The boron concentration in diluted DS can satisfy the irrigation water standard.

关键词： Fertilizer drawn forward osmosis (FDFO) Boron removal Specific energy consumption (SEC) Seawater reverse osmosis (SWRO) Irrigation water production

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Hybrid genetic algorithm for bi-objective resource-constrained project scheduling

Fikri KUCUKSAYACIGIL, Gündüz ULUSOY

《工程管理前沿（英文）》 2020年第7卷第3期页码 426-446 doi: 10.1007/s42524-020-0100-x

摘要： In this study, we considered a bi-objective, multi-project, multi-mode resource-constrained project scheduling problem. We adopted three objective pairs as combinations of the net present value (NPV) as a financial performance measure with one of the time-based performance measures, namely, makespan ( ), mean completion time (MCT), and mean flow time (MFT) (i.e., min /max , min /max , and min /max ). We developed a hybrid non-dominated sorting genetic algorithm II (hybrid-NSGA-II) as a solution method by introducing a backward–forward pass (BFP) procedure and an injection procedure into NSGA-II. The BFP was proposed for new population generation and post-processing. Then, an injection procedure was introduced to increase diversity. The BFP and injection procedures led to improved objective functional values. The injection procedure generated a significantly high number of non-dominated solutions, thereby resulting in great diversity. An extensive computational study was performed. Results showed that hybrid-NSGA-II surpassed NSGA-II in terms of the performance metrics hypervolume, maximum spread, and the number of non-dominated solutions. Solutions were obtained for the objective pairs using hybrid-NSGA-II and three different test problem sets with specific properties. Further analysis was performed by employing cash balance, which was another financial performance measure of practical importance. Several managerial insights and extensions for further research were presented.

关键词： backward–forward scheduling hybrid bi-objective genetic algorithm injection procedure maximum cash balance multi-objective multi-project multi-mode resource-constrained project scheduling problem

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快速热处理制备纳米耦合Nd-Fe-B磁体的结构与磁性能研究 Review

杨金波, 韩景智, 田海东, 查亮, 张雄祚, 金哲星, 梁栋, 杨文云, 刘顺荃, 王常生

《工程（英文）》 2020年第6卷第2期页码 131-139 doi: 10.1016/j.eng.2019.12.008

摘要：在本工作中，我们总结了快速热处理技术——电子束曝光，对Nd_12.5-xFe_80.8+xB_{相比于传统退火技术所需的退火晶化时间（15 min），电子束曝光下结晶时间仅需0.1 s，并且所需结晶温度降低约248 ℃（Nd₂Fe₁₄B单相材料）。在电子束曝光条件下，还观察到Nd₂Fe₁₄B和α-Fe相协同晶化效应。由于电子束曝光下协同晶化改善了Nd₂Fe₁₄B和α-Fe相的均匀性以及抑制了晶粒的过度生长，因而电子束曝光相比于传统退火技术使材料获得了更加优异的磁性能}

关键词：纳米耦合电子束曝光朗道和郎之万动力学模拟协同晶化