权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Microwave Sintering of Partially Stabilized Zirconia Using a Domestic Microwave Oven

使用家用微波炉微波烧结部分稳定氧化锆

基本信息

批准号：
12650828
负责人：
FUJITSU Satoru
金额：
$ 2.18万
依托单位：
Shonan Institute of Technology, Faculty of Engineering
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650828/
关键词：
microwave PSZ PZT microwave oven sintering grain growth PZT

项目摘要

Partially stabilized zirconia (PSZ) powders were fully densified by microwave heating using a domestic microwave oven. The pressed powder compacts of PSZ were sandwiched between two ZnO-MnO_2-Al_2O_3 (ZMA) ceramic plates acting as preheaters in the microwave oven and put in the oven. PSZ ceramics fabricated with the domestic microwave oven for 16 min exhibited a density of 5.94 g/cm^3, which is approximately equal to the density of bodies sintered at 1350 ℃ for 4 h or at 1400 ℃ for 16 min by the conventional furnace method. The PSZ pellet pre-heated by the ZMA ceramics more easily absorbed the microwave energy and self-heated to a higher temperature. The microwave heating enhanced not only the densification but also the grain growth. From this viewpoint, it was judged that the atomic diffusion should be promoted by irradiation of the microwave.The bending strength of specimens sintered by microwave heating was comparable with that sintered by a conventional method (1450 ℃, 4 h). From this viewpoint, it is judged that this sintering method using an domestic microwave oven is better than the conventional method for the low energy consumption and low cost.The similar method was applied on the sintering of lead zirconate titanate (PZT). The dense specimens were obtained for 11 min of driving a domestic microwave oven. Sintered silicon carbide was used as a preheater.

利用家用微波炉对部分稳定氧化锆（PSZ）粉末进行了微波加热，使其完全致密化。将压制好的PSZ粉末压块夹在作为预热器的ZMA陶瓷板之间，放入微波炉中加热。用家用微波炉加热16 min制得的PSZ陶瓷密度为5.94 g/cm^3，近似等于用传统炉法在1350℃下烧结4 h或1400℃下烧结16 min的体的密度。经ZMA陶瓷预热的PSZ球团更容易吸收微波能量并自加热到更高的温度。微波加热不仅促进了致密化，而且促进了晶粒的长大。从这一观点出发，认为微波辐照应促进原子的扩散。微波加热烧结试样的抗弯强度与常规方法烧结试样（1450℃，4 h）相当。从这个角度出发，认为这种用家用微波炉烧结法能耗低、成本低，优于传统烧结法。将类似的方法应用于锆钛酸铅（PZT）烧结。用家用微波炉加热11 min，得到致密的试样。采用烧结碳化硅作为预热器。