Influence of Microstructure on Mechanical Response of Silicon Nitride Ceramic Composites in Nano-, Micro- and Macro-volume of Material

被引：0
|
作者：
Shikimaka, O. [1 ]
Grabco, D. [1 ]
Balazsi, K. [2 ]
Danitsa, Z. [1 ]
Mirgorodscaia, Ia. [1 ]
Balazsi, Cs. [2 ]
机构：
[1] Moldavian Acad Sci, Inst Appl Phys, 5 Acad Str, MD-2028 Chishinau, Moldova
[2] Hungarian Acad Sci, Res Inst Tech Phys & Mat Sci, Budapest, Hungary
来源：
FRACTOGRAPHY OF ADVANCED CERAMICS III | 2009年 / 409卷
关键词：
silicon nitride composite; carbon nanotube; microstructure; indentation; fracture thoughness; macrohardness; microhardness; nanohardness; FRACTURE-TOUGHNESS; CARBON NANOTUBES; INDENTATION;
D O I：
10.4028/www.scientific.net/KEM.409.346
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：
The peculiarities of contact-induced deformation in nano-, micro- and macroscopic scale of silicon nitride ceramic composites have been studied by using quasistatic macro- and microindentation techniques, dynamic nanoindentation technique and microstructure investigations. The addition of multiwall carbon nanotubes (MWCNTs) to the ceramic matrix showed the modification of microstructure leading to the modification of mechanical behavior of material: increase of fracture toughness along with the decrease of hardness. The general tendency of hardness increase with decrease of deformation volume was observed for silicon nitride ceramics, as well as, a high fracture resistance in micro- and nano-deformed volumes of material.
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页码：346 / +
页数：2
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