热处理反应合成Cr-Al纳米棒  

Fabrication of Cr-Al Nano-Rod by Heat Treatment Reaction

作　　者：梁宝岩[1,2] 张旺玺[1,2] 冯燕翔[1,2] 

机构地区：[1]中原工学院材料与化工学院,郑州451191 [2]金刚石技术国家地方联合工程实验室,郑州451191

出　　处：《中国陶瓷》2017年第3期56-59,共4页China Ceramics

基　　金：郑州市国际科技合作与交流项目(153PGJHZ209);河南省高等学校重点科研项目(17A430034);河南省高校创新团队项目(15IRTSTHN004);河南省省院科技合作项目(142106000193);河南省教育厅自然科学研究计划项目资助(14A430007);河南省科技开放合作项目(142106000051);郑州市人才引育项目(141PRCYY514)

摘　　要：采用微波热处理技术得到了Cr-Al纳米棒。采用XRD、扫描电镜与能谱仪研究产物的物相组成与显微形貌。研究结果表明,通过微波合成技术,采用2Cr/Al/石墨扮体原料反应后的产物的主相为Cr_2Al、Cr_7C_3和Cr_2AlC。产物中存在许多20~30μm长的毛茸茸状组织,该组织中是由大量CrAl纳米棒构成的。Cr-Al纳米棒的长度约200~500 nm,宽度约100nm。当用碳纤维取代石墨扮体时,除了产生大量的Cr-Al纳米棒,还会产生大量的Al_2O_3晶须。原料中的石墨或碳纤维起到了诱发电弧放电的作用,从而促进CrAl纳米棒的形成。The Cr-Al nano-rod was synthesized by microwave heat treatment. The phase composition and microstructure of the samples were studied by XRD, SEM and EDS. The result showed that main phase of the product were Cr2Al, CrTC3 and Cr2AlC after microwave synthesis from 2Or/At/graphite. There were many hairy shape textures with a length of about 20 - 30 μm in the product. The hairy shape texture was composed of large amounts of Cr-Al micro-rods with a length of 200 - 500 nm and a width of 100 nm. When the graphite powder was replaced by carbon fiber, a large numbers of Cr-Al nano-rods and Al2O3 crystal whiskers were produced. The graphite in raw material played one role for inducing arc discharge, which benefits to the synthesis of Cr-AI nano-rod.

关 键 词：Cr-Al纳米棒 微波合成技术 

分 类 号：TQ174.758.12[化学工程—陶瓷工业]