Al2O3陶瓷基片的微波烧结

本文简要介绍了微波烧结的特点，基本原理及系统组成，对Ａｌ２Ｏ３陶瓷基片的微波烧结过程进行了介绍和分析，并同常规烧结进行了对比实验，在此基础上得出了一些结论，为陶瓷微波烧结提供了实验的依据。     

陶瓷微波烧结技术及其进展

本文介绍了陶恣微波烧结的基本原理、材料与微波之间的相互作用机制及陶瓷微波烧结技术研究的最新进展。对陶瓷微波烧结工艺与传统的常规烧结方法作了系统比较，同时对微波烧结技术在陶瓷工业的应用前景作了评述。     

多孔陶瓷的微波烧结技术

介绍了多孔陶瓷的微波烧结技术和烧结机理 ,以及微波烧结与传统烧结的区别 ,并且阐述了微波烧结过程中遇到的棘手问题及其解决方法     

微波烧结在陶瓷材料中的应用

微波烧结作为一种陶瓷材料烧结的新方法,近年来得到飞速发展。本文介绍了微波烧结的原理,阐述了微波烧结在陶瓷 材料中的应用,并分析了微波烧结存在的问题及其解决途径。     

微波烧结CaZrO3陶瓷的研究

以CaZrO3为原料，利用微波等离子体烧结技术制备高密度的CaZrO3陶瓷。研究了工艺参数对CaZrO3陶瓷结构的影响。测试了CaZrO3陶瓷的性能。结果表明，微波等离子体烧结技术与常规法相比，其烧结时间明显缩短，性能有所改善。而微波功率和压力是获得优质CaZrO3陶瓷的关键。     

氮化硅陶瓷的微波烧结

利用ＴＥ１０３单模腔微波烧结系统对添加６％（Ｙ２Ｏ３＋Ａｌ２Ｏ３）的α、β－ＳｉＮ４粉的微波加热特征进行了研究。通过选择合理的保温材料和烧结工艺，获得了较高密度、结构均的氮化硅烧结体。实验发现，对于粉末为α－Ｓｉ３Ｎ４的试样，在相变发生的温度内，相变的发生比较密化进程更早而且发生在一个相对更低的温度，研究结果也表明，在微波烧结中相变促进致密化进程。在较短的内警备交高的密度和较好的力学性质，氮化硅的     

陶瓷微波烧结技术研究进展

综述了近年来用微波方法烧结陶瓷在机理和应用上的进展,阐明了微波促进陶瓷体特别是在多元系统中烧结的原理,列举了近几年来微波烧结提高陶瓷性能的实例,指出了微波烧结陶瓷技术的发展前景.     

氮化硅陶瓷材料微波烧结研究现状

氮化硅是一种具有优良性能的陶瓷材料,是一种理想的高温结构材料和高速切削刀具材料,近年来随着微波技术的发展,氮化硅的微波烧结越来越受关注。本文简述了氮化硅陶瓷材料传统烧结与微波烧结的研究现状;比较分析了各种烧结技术制备的氮化硅陶瓷的微观结构和力学性能,得出了微波烧结氮化硅陶瓷的优越性;最后提出氮化硅陶瓷微波烧结在未来研究中还需解决的问题。     

Y,Ce—TZP陶瓷的微波快速烧结

微波烧结工艺具有烧结快速、产品致密、晶粒细小以及微观结构均匀等特点。本文研究了影响微波微快速烧结了ＴＺＰ陶瓷的各种因素，并与常规结作对比，着重从样品的力学性能、四方相含量和微观结构几方面探讨几烧结的种种特性     

ZTA陶瓷微波烧结研究

采用２．４５ＧＨＺ，５ＫＷ功率源的多模腔微波烧结装置对１５％（按质量计，下同）ＺｒＯ２（２．５％ｍｏｌ）Ｙ２Ｏ３＋８５％Ａｌ２Ｏ３的ＺＴＡ陶瓷的微波加热烧结特性，显微结构和力学性能作了较系统的研究，并与常规烧结进行比较，通过合理的保温结构设计和良好的爱人本负载阻抗匹配实现了微波快速绕结。实验发现：在多模腔中ＺＴＡ陶瓷坯体经微波加热约３０ｍｉｎ至１５４０℃保温２０ｍｉｎ（共约５０ｍｉｎ），其密度可达     

微波烧结在陶瓷中的应用

微波烧结法作为一种全新的烧结技术与传统的烧结方法有着很大的不同。介绍了微波烧结的原理及特点,全面综述了微波烧结工艺的研究现状,介绍了微波烧结技术在陶瓷材料的应用,最后展望了微波烧结技术的前景。     

氧化物陶瓷的微波烧结机理

本文是综述文章,介绍了近十几年来发展较快的微波烧结技术,及微波烧结时 Ａｌ２ Ｏ３ 、 Ｚｒ Ｏ２ 等材料的微波烧结机理。研究发现, Ａｌ２ Ｏ３ 、 Ｚｒ Ｏ２ 陶瓷的微波烧结机理与常规烧结基本相同,微波烧结条件下的烧结及晶粒长大的活化能比常规烧结条件下低、速度较常规烧结条件下快,说明微波烧结条件下起决定作用的传质过程不同,微波烧结中体积扩散占主要地位,但产生这一现象的原因尚待研究。     

铁氧体磁性材料烧结技术

烧结技术对铁氧体的性能具有决定意义,一直是科学界研究的热点问题。本文综述了近年来铁氧体磁性材料的烧结技术,主要包括固相烧结、液相烧结、等离子体烧结和微波烧结,分析总结了不同烧结技术的发展现状、优缺点及改进措施,并对铁氧体磁性材料今后的发展趋势和烧结技术作了展望。     

In situ mullite foam fabrication using microwave energy

In situ mullite ceramic foams were fabricated using polymeric sponge replication method from ceramic slurry containing alpha alumina and kaolin mixtures. Ceramic preforms were processed using microwave energy and conventional heating. The sintered foam samples were characterized by SEM and XRD observations, density measurements and compression tests in order to observe the effect of two different sintering techniques on the structure and properties. It was found that the microwave processing was completed in a shorter burning out and sintering cycle and produced structures having higher mullite transformation ratio and fine grains.     

Densifications and mechanical properties of single-phase Gd2Zr2O7 ceramic waste forms with improved TRPO waste load

A nitrate–citrate combustion method combined with microwave sintering was firstly employed for the rapid fabrication of the Gd₂Zr₂O₇ matrix immobilizing various amounts of simulated nuclear wastes. Phase evolutions, microstructure changes, element distributions, densification processes and mechanical properties of the as-prepared (1 – x)Gd₂Zr₂O₇·xTRPO (0.0 ≤ x ≤ 0.6) at various temperatures were investigated. Compared to the reported studies, we have increased the immobilization amount of simulated TRPO waste within a crystal structure from 45 to 60 wt%. T_d and T_g (the threshold temperatures to trigger accelerated densification and grain growth, respectively) were employed to divide the densification process into three stages. the mechanical properties and the densification stages of the (1 – x)Gd₂Zr₂O₇·xTRPO (0.0 ≤ x ≤ 0.6) ceramics sintered under microwave sintering at various temperatures were finally determined. Fine-grained (1 – x)Gd₂Zr₂O₇·xTRPO (0.0 ≤ x ≤ 0.6) ceramic waste forms with average grain size less than 200 nm and relative density higher than 90% can be obtained by microwave sintering at sintering temperature less than 1400 °C.     

微波烧结ZTA陶瓷的影响因素

通过改进混合加热模式,实现了ZTA陶瓷微波烧结。材料的类型及配比直接影响微波烧结的升温速率;输入功率的提高有助于提高烧结速率;辅助加热体的老化现象降低微波烧结速率;微波烧结过程中应避免出现热剧变现象。     

Microwave assisted sintering of in-situ cordierite foam

In situ cordierite foams were fabricated using a polymeric sponge replication method from ceramic slurry containing kaolin, magnesia and quartz mixtures. Ceramic preforms were processed using conventional and microwave assisted heating. The effect of two different sintering techniques on the in situ formation of the cordierite phase as well as the properties of the sintered foams were evaluated by SEM and XRD observations, density measurements, bending and compression tests. It was found that the microwave processing was completed in a shorter burning out and sintering cycle and produced structures having higher cordierite transformation ratio.     

Flash microwave pressing of zirconia

Microwave Pressing is a promising way to reduce microwave sintering temperatures and stabilize microwave powder materials processing. A multiphysics simulation was conducted of the regulated pressure-assisted microwave cavity. This simulation took into consideration resonance phenomena and the nonlinear temperature-dependent material parameters of zirconia. The intrinsic behaviors of microwave systems and zirconia make the regulation of the microwave pressing difficult. However, the same phenomena can be used to activate flash sintering. Flash microwave sintering uses high electric fields of the resonant microwave profile, the Negative Temperature Behavior (NTC) of zirconia resistivity, and the mechanical pressure applied to the powder via a die compaction configuration. The resulting flash microwave pressing still needs improvement in terms of the processed material structure homogeneity, but it has the capacity to become the fastest sintering treatment as it allows room temperature activation where the total process time only takes a few seconds. In addition, this 10-20 seconds processing technique has shown good potential for improving the transparency of alumina presintered specimens.