SEMINAR
The State Key Lab of High Performance Ceramics and Superfine Microstructure
Shanghai Institute of Ceramics, Chinese Academy of Sciences

　　中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室

　　New Ceramics by Rapid Sintering　

　　Speaker

　　Prof Mike Reece

　　Queen Mary University of London 

　　时间：9月2日 （星期二）上午10:00

　　地点：4号楼14楼第二会议室　　

　　联系人：张国军 1080

　　报告摘要：

　　Ceramics are normally produced by the densification of fine powders at high temperatures by the mechanism of sintering. The time required for this process is usually measured in hours because of the slow rate of heating/cooling of the furnaces used. Using electrical current assisted sintering the heating rate can be much higher (>500?C/min), and the densification process can be completed in minutes. This opens up the possibility of making ceramics with new microstructures and properties. This will be illustrated by research on nanostructured, textured and non-equilibrium ceramics. Recent advances in the chemical synthesis of nano-powders and carbon nanostructures combined with rapid sintering has made it possible to investigate nano-scale size effects in structural and functional ceramics. The talk will focus on recent developments to extend Spark Plasma Sintering through increasing temperature, heating rate (Flash SPS) and pressure to produce UHTCs.

　　报告人简介：

　　Mike Reece: Professor of Functional Ceramics, Head of the Functional NanomaterialsGroup at Queen Mary University London (QMUL). He reported some of the earliest evidence to show that mechanical fatigue effects are significant in structural ceramics and not simply a manifestation of stress corrosion effects (static fatigue) as previously thought. His work at QMUL has focused on the electromechanical properties of ferroelectric, ferroelastic and piezoelectric ceramics, including the first reported work on the use of nanoindentation to characterise ferroelectric thin films. More recently, he has been working on the development of layered perovskite ceramics for application as high temperature piezoelectrics and thermoelectrics. He set-up the first spark plasma sintering (SPS) furnace in the UK. The focus of his research in this area is to produce new structural and functional ceramics, including materials that can operate under extreme conditions. This includes nanostructured, textured and metastable materials. His group has reported for the first time ferroelectricity and piezoelectricity in A2B2O7 compounds with super-high Curie points (>1,700°C). This work has opened up this field, with the prospect of producing a step change in the operating temperature of piezoelectric sensors. A long term objective of his work is commercialise materials prepared by SPS through knowledge transfer and spin-outs. He has published over 150 papers on both functional and structural ceramics. He is the Director of Nanoforce Technology Ltd, a spin-out company of QMUL, which was funded as part of the DTI Micro- and Nano-technology Network. He was until recently the Chair of the Functional Materials Committee of IOM3 (2008-12), a Royal Society Industry Fellow (2011-2015) and Editor of Advances in Applied Ceramics. He was an invited professor at the Shanghai Institute of Ceramics (2013). He was awarded the Institute of MaterialsVerulam medal (2010).