新型陶瓷结合剂及陶瓷浇注料

介绍了近年来研究制成的新型陶瓷结合剂和陶瓷浇注料,分析了新型陶瓷浇注料的质量特性,证明了使用高稠度陶瓷结合剂服液生产浇注料不但能提高产品质量,而且可以减少资源消耗,保护环境,是当今陶瓷注料生产中最理想的结合剂。     

Electrophoretic deposition of ceramic coatings on ceramic composite substrates

Abstract

The applicability of electrophoretic deposition (EPD) for the fabrication of single layer and multilayer ceramic coatings on dense ceramic composite materials has been examined. Al₂O₃/Y-tetragonal zirconia polycrystal (TZP) functionally graded composites of tubular shape were successfully coated with a two layer coating comprising porous alumina and dense reaction bonded mullite layers. The dual layer coating structure was designed to eliminate the numerous cracks caused by volume shrinkage during sintering of the individual EPD formed layers. In another example, mullite fibre reinforced mullite matrix composites were coated with a thin layer of nanosized silica particles using EPD. The aim was to achieve a compressive residual stress field in the silica layer on cooling from sintering temperature, in order to increase composite fracture strength and toughness. The EPD technique proved to be a reliable method for rapid preparation of single layer and multilayer ceramic coatings with reproducible thickness and microstructure on ceramic composite substrates.     

Effect of ceramic powder fineness on mullite-zirconium ceramic properties

Results are provided for a study of the development of high-temperature mullite-zirconium ceramic with use of activated ceramic powders prepared by grinding for different times with addition of illite clay, and from pure oxide powders. It is shown that increased activity and amorphicity of ground particles considerably promotes formation of mullite phase at 1200°C, and also transition of the monoclinic modification of ZrO₂ to tetragonal, particularly with an increase in firing temperature. It is proposed that as a result of rapid “freezing” the structure retains the high-temperature modification of ZrO₂, having a tendency with slow ceramic cooling to transform into the monoclinic modification.     

PLC在薄型陶瓷砖示试验线中的应用

薄型陶瓷砖的生产是降低原料消耗、减少能源消耗的主要途径。成形、输送、干燥机理和控制系统研究是薄型陶瓷砖产品生产的重要环节。陶瓷砖薄型化是陶瓷行业发展的一种必然趋势,只有不断进行技术创新,才能实现“十一五”期间节能目标。     

浅论陶瓷技术与陶瓷艺术的关系

本文试将时间为线索,技术的突破和审美的反思变革为时间节点,分述各个时期中陶瓷技术和陶瓷技术的关系。     

陶瓷纤维在陶瓷窑炉上的应用及展望

介绍了陶瓷纤维在陶瓷窑炉上的应用,并针对应用中存在的一些问题提出了看法,为陶瓷纤维的实际应用提供参考。     

陶瓷雕刻肌理与当代陶瓷装饰的关系

随着国家经济的高速腾飞,民众的生活水平也日益提高,简单程式化的装饰已经满足不了我们普罗大众的审美情趣。随着陶瓷装饰的设计思维越发的现代化,当代多元化的装饰元素不停的更新。其中陶瓷雕刻这一装饰题材,则富有无与伦比的亲和力以及强烈的装饰感。本文将陶瓷雕刻作为主要的研究对象,着力探讨陶瓷雕刻的造型语言、肌理技法等的审美表达。通过对比陶瓷雕刻语言运用到当代陶瓷装饰中的可行性,也为当代陶瓷装饰的发展带来新的推动力。     

传统类陶瓷造型与现代陶艺的互通性

传统陶瓷艺术是历史文化的结晶,是东方审美艺术的体现.现代陶艺是在传统陶瓷基础上发展而来,它不仅继承了传统陶瓷的造型精髓,经过手工匠人的打造更是把传统文化和现代工艺完美融合,形成独特造型风格.本文主要针对传统类陶瓷与现代陶艺造型特点进行研究,发掘传统类陶瓷造型与现代陶艺的互通性,促进传统陶瓷造型和现代审美完美融合,为相关...     

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。     

浅谈陶瓷墙地砖原料之鉴别

众所周知，原料是陶瓷工业的基础，原料质量的优劣是影响坯、釉料工艺性能，以及生产工艺控制和产品性能的一个重要因素。因此，了解并掌握各类原料的性能和作用对于正确选择原料，制定合理的配方和确定适当的工艺流程有重大的实际意义。在实际生产中，当配方确定后（在其他工艺条件不变的情况下）原料化学成分的改变，就会引起物质结构的变化以及瓷体岩相间量比的变化，同时也会改变产品的整体性能，如高温液相粘度、热膨胀系数、产品白度、光泽度、热稳定性、机械强度等。所以原料的组成和物理性能的稳定对陶瓷产品质量的稳定起决定性的作用。因此，如何科学地选择、鉴别和利用日趋减少的、不可再生的矿产资源，一直是业内同行十分关注的问题。笔者结合生产实践，通过2000多次对原料的外观、化学成分、有机物、烧结性、解胶性等方面性能的检测，得出一些经验体会愿与同行探讨。     

High-toughness silicate ceramic

A silicate ceramic that is similar to porcelain and exhibits a maximum toughness of 4.6 MPa m^1/2 was obtained by tape casting from kaolin and 3 vol% of alumina fibers. Improved toughness and strength are achieved with the organized micro-composite microstructure that results from preferential orientation during the shaping of kaolinite particles and fibers in-plane of layers. During sintering, typical nucleation and growth processes of mullite produce specific microstructural characteristics, such as bulk zones, oriented fibers and large interfacial zones between the fibers and the bulk. Toughening is attributed to the decreased crack energy in the bulk ceramic, in which a dense and organized network of short mullite occurs, and in interfacial zones containing a superimposed network of large mullite. The silicate ceramic that is reinforced by only 3 vol% of the alumina fibers is strong (95 MPa) and tough (4.6 MPa m^1/2); although these properties are often mutually exclusive.     

Concrete ceramic brick

The composition of a stiff molding mixture has been developed for making concrete ceramic solid brick by press molding or vibrocompression. The brick has a standard size, beige or light red color, and meets the requirements of GOST 530–95. The production cost of this brick is 30–35% lower than that of analogous ceramic bricks because the firing operation is excluded from the production cycle.