An exploratory investigation on the in-situ synthesis of SiC/AlN/Al composites by spark plasma sintering

被引：30

作者：

Daoush, W. ^{[2
]}

Francis, A. ^{[1
]}

Lin, Y. ^{[3
]}

German, R. ^{[3
]}

机构：

[1] Cent Met Res & Dev Inst, Cairo, Egypt

[2] Helwan Univ, Fac Ind Educ, Prod Technol Dept, Cairo, Egypt

[3] San Diego State Univ, Coll Engn, Dept Mech Engn, San Diego, CA 92182 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 622卷

关键词：

Spark plasma sintering (SPS); Al/SiCN composites; Hardness; Microstructure; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; CERAMICS; ALUMINUM; NANOCOMPOSITES; CONSOLIDATION; CONDUCTIVITY; EXTRUSION; BEHAVIOR; SYSTEM;

D O I：

10.1016/j.jallcom.2014.10.066

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The powder mixtures of aluminum and silicon carbonitride (Al-SiCN) have been consolidated into bulk materials by spark plasma sintering. XRD patterns indicated the in-situ formation of SiC and AlN. The density of the SiCN-Al composite sintered by SPS at 500 degrees C is 2.65 g/cm(3) or higher in a weight range of SiCN powder particles up to 2.5%. The formation of new phases and the relatively absence of porosities in the matrix composites are attributed to the co-existence of solid-liquid state that leads to the effective densification of the mixed powders. The breakdown of SiCN network structure was considered to result from a reaction between partially aluminum melt and SiCN particles. An improvement in density and hardness is observed. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：458 / 462

页数：5

共 39 条

[1] Relaxor behavior, polarization buildup, and switching in nanostructured 0.92 PbZn1/3Nb2/3O3-0.08 PbTiO3 ceramics [J].