On the processing of nanocrystalline and nanocomposite ceramics

被引：87

作者：

Kear, BH ^{[1
]}

Colaizzi, J ^{[1
]}

Mayo, WE ^{[1
]}

Liao, SC ^{[1
]}

机构：

[1] Rutgers State Univ, Ctr Nanomat Res, Piscataway, NJ 08854 USA

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 8-9期

关键词：

hot pressing; high pressure; metastable phases; nanostructured materials;

D O I：

10.1016/S1359-6462(01)00884-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Two methods art: being developed for the production of nanostructured bulk ceramics. The first method utilizes hot pressing to consolidate a flame-synthesized metastable nanopowder; taking advantage of a pressure-induced phase transformation to suppress grain growth during consolidation. This process; called Transformation Assisted Consolidation (TAC), is being used to prepare test samples of single phase nanoceramics-nanocrystalline ceramics. The second method utilizes plasma spraying of an aggregated powder feed to generate a splat-quenched metastable phase with extended solid solubility. In this case: TAC processing promotes co-nucleation of two or more nanophases from the rapidly quenched material: which provides an additional mechanism to limit grain growth during sintering. This variant on TAC processing is being used to prepare test samples of multiphase nanoceramics-nanocomposite ceramics. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：2065 / 2068

页数：4

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