10月28日（周二）名师讲坛：MAX相固溶体
北京交通大学“与大师面对面”名师讲坛系列活动
（机电学院，2014年秋季第6周）
【主 题】：MAX phases solid solutions（MAX相固溶体）
【主讲人】：Thierry CABIOCH教授，法国普瓦捷大学
【时 间】：2014年10月28日（星期二）上午10：10-12：00
【地 点】：机电学院大会议室（机械工程楼Z802B）
【主 办】：研究生工作部
【承 办】：机电学院
【主讲人简介】：
Professor Thierry Cabioch is working for university of Poitiers. In 1996, He achieved his doctor from University of Poitiers, and in 2006, was nominated as professor. He has published more than 50 articles in international journals (9 Phys. Rev. B, 3 Appl. Phys. Lett., 3 J. Appl. Phys., 3 J.Amer. Ceram. Soc., 3 J. Eur. Ceram. Soc.,), 25 invited conferences in international conferences, workshops and seminars. His main research activities are: a) Carbon onions synthesis; b) Thin films synthesis of metallic nanoparticles encapsulated into graphitic cages; c) Synthesis and physical properties of MAX phases.
Thierry Cabioch，现任法国普瓦捷大学教授。1996年在普瓦捷大学获得博士学位，并与2006年受聘于普瓦捷大学材料系教授。他本人已发表超过50篇有国际影响力的各类文章，包括5篇物理评论B，3篇应用物理快报，3篇应用物理期刊，3篇美国陶瓷学会志以及3篇欧洲陶瓷学会志；此外Thierry Cabioch 教授还受邀参加过25次的各类国际会议、讲习班和研讨会。他目前主要从事的研究包括：1）“碳洋葱”的合成；2）将纳米级金属颗粒封装到石墨笼；3）MAX相材料的合成及物理学特性。
【讲座简介】：
The MAX Phases are layered, hexagonal carbides and nitrides with the general formula: Mn+1AXn, (MAX) where n = 1 to 3, M is an early transition metal, A is an A-group (mostly IIIA and IVA, or groups 13 and 14) element and X is either carbon and/or nitrogen. These carbides and nitrides possess unusual and, sometimes, unique chemical, physical, electrical, and mechanical properties that combine the best attributes of metals and ceramics such as high temperature wear, corrosion resistance, and toughness.
This contribution will focus on the possibilities for modifying (tuning, optimizing,…) the properties of these materials by using the possibility to achieve isostructural solid solutions which can be obtained for the M, A and X site. Several examples based on the activity developed in the institute P’[1-5], but also on the literature, will be presented. Solid solutions hardening/softening effects, synthesis and structure of new ordered MAX phases solid solutions, thermal properties modifications will be discussed as well as the possibility to create new magnetic MAX phases materials.
MAX相材料是一种多层六方晶系的碳化物或氮化物，主要存在形式为Mn+1AXn(n=1到3，M是过渡族金属，A是A主族元素（主要为IIIA或IVA族中的第13和14族），X是碳或氮。此类碳或氮化物拥有独特的化学、物理、电学及机械性能，并且兼具了金属和陶瓷材料特性，诸如高温下的磨损特性、耐腐蚀性能及高温任性。
本次报告主要聚焦于利用对M、A和X位实现同构固溶的方式对此这类材料进行改性（调整和优化）。基于普瓦捷大学开展的研究已经有几种可能方案，但还停留在理论上。报告还将会提及和讨论关于固溶强化/弱化效应，合成新的排列结构的MAX相固溶体，对热学性能的改性，以及制备新型磁性MAX材料等问题。