纳米陶瓷技术是解决陶瓷脆性战略途径

陶瓷材料作为材料的三大支柱之一,在日常生活及工业生产中起着举足轻重的作用。但是,由于传统陶瓷材料质地较脆,韧性、强度较差,因而使其应用受到了较大的限制。随着纳米技术的广泛应用,纳米陶瓷随之产生,希望以此来克服陶瓷材料的脆性,     

谈工程陶瓷材料的结构功能及其运用

陶瓷材料作为材料业的三大支柱之一,在日常生活及工业生产中起着举足轻重的作用。陶瓷材料是人类应用最早的材料之一。它是一种天然或人工合成的粉状化合物,经过成型或高温烧结,由金属元素和非金属的无机化合物构成的多相固体材料。陶瓷材料具有耐高温、耐腐蚀、耐磨损、原料丰富、成本低廉等诸多优点而被人一直关注。1工程陶瓷材料的组成结构与功能特点陶瓷是古老而又新型的材料,它是用天然或     

陶瓷材料在现代家具产品中的应用研究

本文阐述了陶瓷材料在现代家具产品中的应用现状及其主要应用形式;分析了陶瓷材料与功能、形态、结构、色彩和材质等五个家具设计要素间的关系;从家具功能、产品形态、材料表现力和文化意蕴等四个方面,提出了基于陶瓷材料的现代家具产品设计创新途径。陶瓷材料在现代家具产品设计中的应用将扩展陶瓷材料的使用空间,丰富陶瓷材料在设计领域的内涵,实现陶瓷材料新的实用价值和美学价值。     

陶瓷材料在日用产品设计中的应用研究

随着科技的进步,新型材料在产品设计中应用越来越丰富,人们对日用产品的品质也有了更高的要求。陶瓷材料因其优势特性的实用价值,和具有其他材料不可媲美的艺术效果,被广泛应用于日用产品中,为人们营造了舒适,便捷,高品质的生活空间。对比日用产品设计中陶瓷材料与其他常用材料的特性,陶瓷材料可以弥补其他常用材料在某些方面应用的不足之处。研究陶瓷材料在日用产品设计中的应用,使之更好的发挥陶瓷材料功能应用,并在设计中使日用产品符合生活品质提升的要求,获得更深远的发展。     

扫描电子显微镜在陶瓷生产中的应用

本文介绍了扫描电子显微镜在陶瓷原料、陶瓷材料显微结构分析中的应用,以及在陶瓷成本的缺陷分析中的应用,并指出扫描电镜在材料研究中越来越重要的作用。     

陶瓷材料在电子产品设计中的特色探讨

陶瓷材料是人们十分熟悉的古老材料,主要应用在日用陶瓷、建筑陶瓷和卫生陶瓷等方面,近几年来在电子类产品外观上的应用也逐渐增多。从现有的陶瓷外观方面分析、归纳及探索陶瓷材质在电子产品外观上应用的倾向和美感。以大众较为普遍拥有的电子类产品举例,阐明陶瓷材料作为其产品外观造型材料从功能、审美、人文情怀三方面的设计特色。     

低碳经济驱动新型陶瓷材料行业的未来

新型陶瓷材料具有高强度、高硬度、耐腐蚀、耐高温等特性。近些年来,在开发新能源和有效利用石油能源的呼声中,发达国家相继掀起了新型陶瓷材料研究开发的热潮。针对新型陶瓷材料的独特性能,综述了工程陶瓷材料用途广泛和功能陶瓷材料的应用前景,以及陶瓷基复合材料的发展趋势;介绍了广泛应用于工程领域的陶瓷阀门材料和切削性能优良的新型陶瓷刀具,同时指出了陶瓷材料产业的应用开发趋势。     

低碳经济驱动新型陶瓷材料行业的未来

新型陶瓷材料具有高强度、高硬度、耐腐蚀、耐高温等特性。近些年来,在开发新能源和有效利用石油能源的呼声中,发达国家相继掀起了新型陶瓷材料研究开发的热潮。针对新型陶瓷材料的独特性能,综述了工程陶瓷材料用途广泛和功能陶瓷材料的应用前景,以及陶瓷基复合材料的发展趋势;介绍了广泛应用于工程领域的陶瓷阀门材料和切削性能优良的新型陶瓷刀具,同时指出了陶瓷材料产业的应用开发趋势。     

CBN刀具车削高铝陶瓷

特种陶瓷材料(以下简称陶瓷材料)耐磨性强,硬度高,但很脆。因此,在加工领域中,刀具材料的应用开发可作为首先提出的课题之一。CBN(立方氨化硼)是迄今为止人类所发现的硬度仅次于金刚石的超硬刀具材料。本文以陶瓷材料的物性和加工机理间的关系为基础,阐述了CBN刀具车削离铝陶瓷的加工特性,提出了用CBN刀具车削陶瓷材料这一带有开拓性的研究课题。由于陶瓷有着与金属材料不同的性质,在加工过程中,使用CBN刀具的许多问题还在探索中。     

低碳经济驱动新型陶瓷材料行业的未来

新型陶瓷材料具有高强、高硬、耐腐蚀、耐高温等特性。近些年来,在开发新能源和有效利用石油能源的呼声中,发达国家相继掀起了新型陶瓷材料研究开发的热潮。针对新型陶瓷材料的独特性能,综述了工程陶瓷材料用途广泛和特殊性能的功能陶瓷材料广阔应用前景;以及陶瓷基复合材料具有广泛的发展趋势;介绍了广泛应用于工程领域的陶瓷阀门材料和切削性能优良的新型陶瓷刀具;同时指出了陶瓷材料产业的应用开发趋势。     

基于压电陶瓷的MEMS测试用的多载荷加载台的研制

MEMS模态测试的一个突出的特点在于非接触性,无论是振动激励还是响应测量,都只能是非接触的。为解决MEMS测试中非接触式的振动激励问题,对基础激励的原理进行了研究,并设计开发出基于压电陶瓷的MEMS测试用的多载荷加载台。这是一个能为MEMS测试提供振动、温度和压力这三种载荷的加载装置。从而为进一步开展MEMS的动态测试工作奠定了基础。     

Fabrication of crescent-shaped ceramic microparticles based on single emulsion microfluidics

Ceramic microparticles have great potentials in various fields such as materials engineering, biotechnology, microelectromechanical systems, etc. Morphology of the microparticle performs an important role on their application. To date, it remains difficult to find an effective and controllable way for fabricating nonspherical ceramic microparticles with 3D features. This work demonstrates a method that combines UV light lithography and single emulsion opaque-droplet-templated microfluidic molding to prepare the crescent-shaped ceramic microparticles. By tailoring the intensity of UV light and flow rate of fluid, the shapes of microparticles are accordingly tuned. Therefore, varieties of crescent-shaped microparticles and their variations have been fabricated. After sintering, the crescent-shaped alumina ceramic microparticles were obtained. Benefitting from the light absorption and scattering behavior of most ceramic nanoparticles, this system can serve as a general platform to produce crescent-shaped microparticles made from different materials, and hold great potentials for applications in microrobotics, structural materials in MEMS, and biotechnology.     

聚合物先驱体转化法制备陶瓷MEMS器件

简述了聚合物先驱体转化陶瓷(PDC)法在制备陶瓷纤维、陶瓷涂层和陶瓷粘接等方面的应用,重点介绍了PDC法在微机电系统(MEMS)器件制造中的发展概况。耐高温MEMS的发展面临两大挑战:高温材料的选择和发展合适的微加工技术。指出了传统加工技术制备陶瓷MEMS的不足,着重介绍了PDC法制备陶瓷MEMS的优缺点。以国外采用PDC法制备陶瓷MEMS的几种典型器件为例,指出该方法在制备陶瓷MEMS器件中存在的问题和未来的发展方向。     

Recent progress on low-cost ceramic membrane for water and wastewater treatment

Great progress in the development of low-cost ceramic membranes from alternative materials have been achieved recently towards various application especially water and wastewater treatment. However, their significance has not been fully recognized and understood especially in term of their microstructural analysis such as formation of grain growth and microcracks. This review paper summarizes fabrication method, alternative materials, microstructure, wettability, mechanical properties and application of low-cost ceramic membrane. The fabrication method including slip casting, tape casting, extrusion, pressing method and phase inversion technique are described. Alternative materials used in low-cost ceramic membrane fabrication are discussed and categorized into clays, agricultural waste, industrial waste and animal bone waste. The mechanisms of morphology formation, microstructure and wettability properties are analysed. Modification strategies for the surface of low-cost ceramic membrane are discussed, and classified into modification for separation application, modification for photocatalytic application and modification for membrane distillation and membrane contactor system. Modification improves the membrane structure by changing the pore size, porosity and wettability properties of low-cost ceramic membranes. Mechanical properties of low-cost ceramic membranes are also discussed in detail towards several mechanism, like grain growth phenomenon and formation of microcracks which also considered as membrane defects. Grain growth phenomenon can be divided into normal and abnormal grain growth. Meanwhile, formation of microcracks could be occurred in single-phase polycrystalline ceramics that have anisotropic grains or biphasic polycrystalline grains. The application of low-cost ceramic membrane in seawater desalination, oily wastewater treatment, heavy metal adsorption, textile separation and photocatalytic application are reviewed. Finally, some possible opportunities and challenges for further development of low-cost ceramic membrane are pointed out.     

走出陶瓷新材料产业化的困惑

本文阐述了陶瓷新材料的内涵和应用前景，分析了困惑陶瓷新材料产业化的几个问题，提出了我们的看法     

Embossing of ceramic micro-pillar arrays

A microfabrication method for producing ceramic micro-pillars is reported. The method is based on embossing of a gelforming ceramic substrate using a sacrificial polymer mould to produce ceramic micro-pillars with aspect ratios of up to 10. Such high aspect ratio ceramic micro-pillars have been demonstrated for the fabrication of 1–3 PZT piezocomposites. It is also suitable for producing any ceramic MEMS or micropatterned ceramics or microcomponents. The results indicate that the crosslinkable polymer binder system used in the gelforming processing is crucial to retain the structural integrity during mould removal and sintering stages, especially for the high aspect ratio ceramic micro-pillar structures.     

Review of non-destructive testing methods for defect detection of ceramics

Ceramic material is a commonly used material with high mechanical properties such as high hardness, high wear resistance, corrosion resistance and high temperature resistance. It has been processed into various complex structures and applied to the field of industrial and agricultural production.. Since the process of ceramic products is susceptible to factors such as mixing and sintering, it is easy to cause internal or external defects of ceramic products, and the defects of ceramic products are relatively small and difficult to be recognized by human eyes. If the defects existing in ceramic products cannot be detected in time and effectively, they may have a serious impact on the application of subsequent products. In order to solve this problem, this paper analyzed and discussed the application status and existing problems of existing non-destructive testing methods from the perspective of non-destructive testing of ceramic products, and discussed the key technologies and development trends of non-destructive testing of ceramic products.     

电子陶瓷材料及产品与技术解读

电子陶瓷在信息的检测、转化、处理和存储显示中应用广泛,是信息技术中基础元器件的关键材料。针对电子陶瓷材料的功用特点及应用领域,分别介绍了电子绝缘装置陶瓷,电子电容器陶瓷,电子铁电陶瓷和半导体陶瓷以及电子快离子陶瓷的结构原理、性能优势和制造工艺等,同时指出了电子陶瓷材料的发展前景。     

Design of a bent beam electrothermal actuator for in situ tensile testing of ceramic nanostructures

A necessary condition to include nanoscale materials in the design of high-performing as well as reliable electrical and electromechanical devices is the availability of a sufficiently deep knowledge of their mechanical behavior. Up to date, the most powerful tools for mechanical characterization of nanosamples are properly designed microelectromechanical systems (MEMS), due to their compatibility with scanning/transmission electron microscopy (SEM/TEM) and high resolution force/displacement measurements. Herein, we report about the design of a MEMS platform for in situ SEM tensile testing of nanoscale samples. This is characterized by a very compact structure, based only on a bent beam electrothermal actuator, which performs both actuating and sensing functions. The size of the structural components of the present device is chosen with the aim of testing ceramic nanowires, but the resulting configuration can be applied also for other material samples.     

无机陶瓷膜分离技术处理工业废水

无机陶瓷膜是一种新型的膜分离材料,目前已在工业废水处理中得到了广泛的应用。主要介绍了无机陶瓷膜分离技术在印染废水、造纸废水、冶金废水和采油废水上的研究进展,并对今后无机陶瓷膜分离技术在工业废水处理中的应用提出了几点建议。