通过电线电爆炸法制备的氧化铝纳米粉末的放电等离子烧结。

Spark plasma sintering of alumina nanopowders produced by electrical explosion of wires.

作者信息

An Vladimir, Khasanov Alexey, de Izarra Charles

机构信息

Institute of High Technology Physics, National Research Tomsk Polytechnic University, 30 Lenin Ave., 634050 Tomsk, Russia.

Groupe de Recherches sur l'Energétique des Milieux Ionisés (GREMI), 4 rue d'Issoudun, BP6744, 45067 Orléans Cedex 2, France.

出版信息

Springerplus. 2015 Oct 6;4:581. doi: 10.1186/s40064-015-1383-y. eCollection 2015.

DOI:10.1186/s40064-015-1383-y

PMID:26543716

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4627989/

Abstract

Alumina nanopowders produced by electrical explosion of wires were sintered using the spark plasma sintering technique. The results of XRD analysis show that the main phase in the compacted nanopowders is α-Al2O3. According to the SEM observations, the sintered alumina nanopowder consists of micron-sized faceted grains and nano-sized necked grains. The increase in sintering temperature resulted in a higher density of the sintered powders: from 78.44 to 98.21 % of theoretical density.

摘要

采用放电等离子烧结技术对通过电线电爆炸法制备的氧化铝纳米粉末进行烧结。X射线衍射分析结果表明，压实纳米粉末中的主要相为α-Al2O3。根据扫描电子显微镜观察，烧结后的氧化铝纳米粉末由微米级的多面体晶粒和纳米级的颈状晶粒组成。烧结温度的升高导致烧结粉末的密度更高：从理论密度的78.44%提高到98.21%。