期刊
ACTA MATERIALIA
卷 57, 期 9, 页码 2607-2612出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2009.01.043
关键词
Functionally graded materials; Ceramics; Spark plasma sintering; Hardness; Toughness
资金
- Spanish Ministry Of Science and Innovation (MICINN)
- Spanish National Research Council (CSIC) [MAT2006-7118, HA2007-0083, CSIC200660II91]
- JAE (CSIC)
Functionally graded materials can enhance the performance of components under demanding operating conditions, although the development of residual stresses across the gradient and scaling LIP the manufacturing process to mass production present some limitations. To overcome these problems, we present a one-step approach for processing continuous functionally graded silicon nitride (Si(3)N(4)) materials from a sole homogeneous powder composition, using spark plasma sintering as a densification technique. Through the control of the temperature profile within the compact, specimens with a continuous variation of alpha- and beta-phase content, as well as grain size, were achieved. A continuous gradation of mechanical properties, in particular, hardness and toughness, were measured in these specimens. This approach offers unprecedented opportunities to design custom-made Si(3)N(4) components by taking advantage of the particularities of field-assisted sintering methods. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据