Strong pinning effect of alumina/nanodiamond composites obtained by pulsed electric current sintering

被引：12

作者：

Moya, J. S. ^{[1
]}

Torrecillas, R. ^{[2
]}

Diaz, L. A. ^{[2
]}

Rodriguez-Suarez, T. ^{[2
]}

Goyos, L. ^{[2
]}

Montes-Moran, M. A. ^{[3
]}

Perfilov, S. ^{[4
]}

机构：

[1] CSIC, ICMM, E-28049 Madrid, Spain

[2] Univ Oviedo, CSIC, CINN, Principado Asturias, Llanera 33428, Asturias, Spain

[3] CSIC, Inst Nacl Carbon INCAR, La Corredoria 33011, Asturias, Spain

[4] TISNCM, Troitsk 142190, Moscow Reg, Russia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2013年 / 33卷 / 10期

关键词：

Nanocomposites; Alumina; Pinning; Mechanical properties; Pulsed electric current sintering (PECS); ONION-LIKE CARBON; DETONATION NANODIAMONDS; ALUMINA; MICROCRACKING; DIAMOND; TEMPERATURE; GRAINS;

D O I：

10.1016/j.jeurceramsoc.2013.01.041

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：

A small fraction (5 vol.%) of detonation nanodiamonds, or DND, acts as a remarkably effective boundary pinning agent in alumina throughout a wide sintering temperature range (from 1200 up to 1700 degrees C). This is the first time that such a strong grain growth inhibitory effect is observed for any of the alumina based composites of similar characteristics reported in the literature. These nanocomposites were consolidated by pulsed electric current sintering (PECS) and present bending strength (550 MPa) and toughness (5.2 MPa m(1/2)) values significantly higher than the ones corresponding to alumina compacts obtained under the same sintering conditions. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：2043 / 2048

页数：6

共 34 条

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