Fast consolidation and properties of a nanostructured AlCr2-2Al2O3 composite from mechanochemically synthesized powders by pulsed current activated heating

被引：3

作者：

Kwak, Bong-Won

Shon, In-Jin ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Div Adv Mat Engn, Jeonju 561756, South Korea

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

Sintering; Composite; Mechanical properties; Nanostructure; Synthesis; OXIDIZED ZIRCONIUM; KNEE; HIP;

D O I：

10.1016/j.ceramint.2015.12.135

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanopowders of AlCr2 and Al2O3 were fabricated using high-energy ball milling. Dense nanostructured AlCr2-2Al(2)O(3) composite was sintered by pulsed current activated heating within 2 min, from mechanically synthesized powders. The advantage of this process is that it allows very quick densification to near-theoretical density and prohibition of grain growth in nanostructured materials. Highly dense AlCr2-2Al(2)O(3) composite with a relative density of up to 97% was produced under application of an 80 MPa pressure with the pulsed current. The fracture toughness of the AlCr2-2Al(2)O(3) composite of this study is similar to that of a previous study and its hardness is higher due to the grain refinement. The fracture toughness of the AlCr2-2Al(2)O(3) composite is higher than that of pure Al2O3. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：6487 / 6494

页数：8

共 9 条

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