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3D打印 1

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压电陶瓷 1

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建筑卫生陶瓷用黏土矿原料（高岭土） 1

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Depth of cut models for multipass abrasive waterjet cutting of alumina ceramics with nozzle oscillation

Jun WANG

《机械工程前沿（英文）》 2010年第5卷第1期页码 19-32 doi: 10.1007/s11465-009-0082-1

摘要： An experimental study of the depth of cut in multipass abrasive waterjet (AWJ) cutting of alumina ceramics with controlled nozzle oscillation is presented. It is found that this cutting technique can significantly increase the depth of cut by an average of 50.8% as compared to single pass cutting without nozzle oscillation under the corresponding cutting conditions and within the same cutting time. Predictive models for the depth of cut are then developed. The modelling process starts with single pass cutting using a dimensional analysis technique and the particle erosion theories applied to alumina ceramics, before progressing to the development of the models for multipass cutting. The models are finally assessed both qualitatively and quantitatively with experimental data. It is shown that the model predictions are in good agreement with the experimental data with the average deviations of about 1%.

关键词： abrasive waterjet engineering ceramics depth of cut cutting performance nozzle oscillation machining

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Separation mechanism for double cylinder with shrink fitting system used for ceramics conveying rollers

Wenbin LI, Hiromasa SAKAI, Shota HARADA, Yasushi TAKASE, Nao-Aki NODA

《机械工程前沿（英文）》 2011年第6卷第3期页码 277-286 doi: 10.1007/s11465-011-0234-y

摘要：

Steel conveying rollers used in hot rolling mills must be exchanged frequently at great cost because hot conveyed strips induce wear and deterioration on the surface of roller in short periods. In previous studies, new roller structure was considered which has a ceramics sleeve connected with two steel shafts at both ends by shrink fitting. Here, although the ceramics sleeve can be used for many years, the steel shafts sometimes have to be exchanged for maintenance and reconstruction under the corrosive atmosphere. Since the thermal expansion coefficient of steel is about five times larger than that of ceramics, it is necessary to investigate how to separate the shrink fitting system by heating outside of sleeve and cooling inside of the shaft. Although how to separate the real roller has been discussed in the previous study, the separation mechanism has not been clarified yet. Therefore, in this study, several types of more fundamental models are investigated to understand the separation mechanism of real roller by the application of the finite element method. The results may be useful for designs of new rollers.

关键词： contact ceramics thermal stress heating finite element method

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Microstructure and electrical properties of NaNbO

Shihui XIE, Kongjun ZHU, Jinhao QIU, Hua GUO

《机械工程前沿（英文）》 2009年第4卷第3期页码 345-349 doi: 10.1007/s11465-009-0050-9

摘要： Lead-free piezoelectric ceramics (1- )NaNbO - BaTiO have been fabricated by a traditional ceramic sintering technique. The effects of BaTiO (BT) synthesized by hydrothermal method on crystal structure, density, dielectric, piezoelectric, and electromechanical properties were investigated. Results show that the phase structure transforms from the orthorhombic phase to the tetragonal phase with the increase of the content of BT, and the two phases co-exist when 0.08< ≤0.10. However, the optimum composition for (1- )NaNbO - BaTiO ceramics is 0.90NaNbO -0.10BaTiO . The 0.90NaNbO -0.10BaTiO ceramics sintered at 1250°C have higher properties: piezoelectric constant of 120 pC/N, dielectric constant of 718, planar electromechanical coupling factor of 24%, planar frequency of 3 MHz·mm, and the mechanical quality factor of 138, respectively. The results show that the (1- )NaNbO - BaTiO ceramics is one of the promising lead-free materials for high-frequency applications.

关键词： Lead-free piezoelectric ceramics NaNbO₃-BaTiO₃ piezoelectricity ceramics crystal structure microstructure

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面向21世纪的超声电机技术

赵淳生

《中国工程科学》 2002年第4卷第2期页码 86-91

摘要：

叙述了新型微特电机——超声电机的特点，回顾了20世纪末期超声电机的发展和应用情况，介绍了南京航空航天大学超声电机研究中心在超声电机研究方面的进展，预测了21世纪国内外市场对超声电机技术的需求，列举了超声电机技术在我国国防和国民经济各部门的应用前景，指出了超声电机技术的发展趋势，针对我国超声电机技术开发和研究的现状，提出了为发展我国超声电机技术亟需解决的若干关键问题。

关键词：超声电机压电陶瓷摩擦材料

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Application of Fe

Xiaowei ZHANG,Qinyan YUE,Dongting YUE,Baoyu GAO,Xiaojuan WANG

《环境科学与工程前沿（英文）》 2015年第9卷第3期页码 402-410 doi: 10.1007/s11783-014-0659-8

摘要： Dyes are common pollutants in textile wastewaters, and the treatment of the wastewater has now attracted much attention due to its wide application and low biodegradability. In this study, Fe /C/Clay ceramics, a kind of novel micro-electrolysis filler, were sintered and employed in a dynamic micro-electrolysis reactor for synthetic Acid Red 73 (AR73) and Reactive Blue 4 (RB4) wastewater treatment. The effects of influent pH, hydraulic retention time (HRT), and aeration on the decoloration efficiencies of AR73 and RB4 were studied. The optimum conditions for wastewater treatment were: AR73, influent pH of 4, HRT of 2 h and aeration; RB4, influent pH of 5, HRT of 6 h and aeration. Under the optimum conditions, decoloration efficiency of AR73 and RB4 wastewater was 96% and 83%, respectively. Results of UV-vis spectrum scanning demonstrated that the chromophores were broken. Continuous running tests showed that improvement of micro-electrolysis system with Fe /C/Clay ceramics for AR73 and RB4 synthetic wastewater treatment could avoid failure of micro-electrolysis reactor, which indicated great potential for the practical application of the ceramics in the field of actual industrial wastewater treatment.

关键词： Fe⁰/C/Clay ceramics micro-electrolysis Acid Red 73 Reactive Blue 4 synthetic wastewater

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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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Properties and effect of forming sewage sludge into lightweight ceramics

Min YUE, Qinyan YUE, Yuanfeng QI, Baoyu GAO, Hui YU

《环境科学与工程前沿（英文）》 2012年第6卷第1期页码 117-124 doi: 10.1007/s11783-010-0220-3

摘要： In this work we investigated the chemical, thermal and toxic properties of dried sewage sludge (DSS), the preparation and properties of lightweight sludge ceramic (LSC) and the mechanisms of action of the organic and inorganic foaming agents (OFAs and IFAs). The chemical components and thermal properties of the raw materials were studied by Energy Dispersive X-ray Detection (EDX) and Thermogravimetric Analysis and Differential Scanning Calorimetry (DSC/TGA). The mineral phases of the raw materials and the formed ceramics were determined by X-ray Diffraction (XRD). The leaching characteristics of heavy metals were investigated with Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). Different ratios of DSS and clay were mixed and pressed into raw pellets. After drying and preheating treatment, the raw pellets were sintered at 1150°C for 10 min. The physical properties of LSC (50 wt% DSS added) were tested. The results showed that when the addition of DSS was above 50 wt%, LSC began to shrink, and a maximum density occurred. The environmental safety of LSC was satisfactory. XRD showed that some new mineral phases formed in the LSC. Observation of the microstructure by Scanning Electron Microscope (SEM) indicated that the body of LSC was porous.

关键词： sludge foaming agents ceramics preheating process

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陶瓷喷墨打印增材制造技术 Review

Brian Derby

《工程（英文）》 2015年第1卷第1期页码 113-123 doi: 10.15302/J-ENG-2015014

摘要：

陶瓷喷墨打印是一种基于微滴累加的成形技术，典型的微滴体积为10~100 pL。实现微滴累加成形的关键是开发稳定的陶瓷墨水，合适的墨水需要满足由雷诺数和韦伯数定义的流变特性参数空间。在微滴累加成形过程中，微滴首先与成形面碰撞变形并消耗动能，然后在毛细管力作用下铺展并达到平衡状态。已经可以确定的是打印过程中微滴相互作用并形成一维线性特征的机理，但是对二维和三维结构成形机理的认识还处于较低水平，成形二维面的稳定性低于成形一维线性结构。多数情况下，墨水通过蒸发固化，微滴碰撞基体所产生的“咖啡环”缺陷需要通过固化工艺加以控制。已经有大量文献报道了使用喷墨打印技术成形各种类型小型陶瓷零件的成功案例。作为一种未来的制造技术，陶瓷喷墨打印技术有广阔的应用前景。本综述的目的是探索陶瓷喷墨打印技术未来潜在的研究领域，加强对这种制造方法的理解。

关键词：增材制造 3D打印喷墨打印陶瓷零件

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我国电子陶瓷技术发展的战略思考

周济,李龙土,熊小雨

《中国工程科学》 2020年第22卷第5期页码 20-27 doi: 10.15302/J-SSCAE-2020.05.003

摘要：

电子陶瓷作为一类重要的战略新材料，是无源电子元件的核心材料，也是电子信息技术领域重要的技术前沿。随着电子信息技术日益走向集成化、智能化和微型化，无源电子元件日益成为电子元器件技术的发展瓶颈，电子陶瓷材料及其制备加工技术的战略地位日益凸显。我国电子陶瓷材料和元件领域已形成了很好的产业技术基础，但在高端材料和元器件方面的竞争力依然不足，一些关键材料技术、工艺技术及设备技术受制于人。研究认为：面对新形势，亟待加大研发投入，理顺体制机制，强化产业链的自主可控和自主创新。

关键词：电子陶瓷，无源电子元件，高端材料

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建材非金属矿产资源强国战略研究

顾真安,同继锋,崔源声,彭寿,苏桂军,周洪锦,冯惠敏,赵飞,田桂萍,孟庆洁,洪伟

《中国工程科学》 2019年第21卷第1期页码 104-112 doi: 10.15302/J-SSCAE-2019.01.015

摘要：

本文研究我国主要建材产品生产所用的水泥灰岩、玻璃用硅质原料、建筑卫生陶瓷用黏土矿原料（高岭土）、高纯石英和石墨五种非金属矿产资源的强国建设战略，确定建材非金属矿产资源发展的战略思路与目标，指出加强矿区规划与保护、建设供应示范基地和标准原料基地、加快推进战略性资源储备制度等重点任务，提出设立矿产资源强国建设领导小组、完善矿产资源原料产品标准体系建设、加强人才培养体系建设、加强矿产资源法律法规制定与实施等保障措施。

关键词：建材强国战略水泥灰岩玻璃用硅质原料建筑卫生陶瓷用黏土矿原料（高岭土）高纯石英石墨