Fracture characteristics of SiC/graphene platelet composites

被引：51

作者：

Sedlak, Richard ^{[1
]}

Kovalcikova, Alexandra ^{[1
]}

Girman, Vladimir ^{[2
]}

Mudra, Erika ^{[1
]}

Rutkowski, Pawel ^{[3
]}

Dubiel, Aleksandra ^{[4
]}

Dusza, Jan ^{[1
,5
]}

机构：

[1] Slovak Acad Sci, Inst Mat Res, Div Ceram & Nonmetall Syst, Watsonova 47, Kosice 04001, Slovakia

[2] Povie Jozef Safarik Univ Kosice, Inst Phys, Dept Condensed Matter Phys, Pk Angelinum 9, Kosice 04001, Slovakia

[3] AGH Univ Sci & Technol Krakow, Fac Mat Sci & Ceram, Dept Ceram & Refractories, Al A Mickiewicza 30, PL-30059 Krakow, Poland

[4] Inst Adv Mfg Technol, Ctr Mat Res & Sintering Technol, PL-30011 Krakow, Poland

[5] Obuda Univ, Donat Bdnki Fac Mech & Safety Engn, Nepszinhaz Utca 8, H-1081 Budapest, Hungary

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2017年 / 37卷 / 14期

关键词：

Ceramic composites; SiC; Graphene platelets; Fracture; Toughness; Strength; CERAMIC-MATRIX COMPOSITES; SILICON-CARBIDE; MECHANICAL-PROPERTIES; ELECTRICAL-PROPERTIES; CARBON NANOTUBES; SIC COMPOSITES; GRAPHENE; TOUGHNESS; MICROSTRUCTURE; NANOCOMPOSITES;

D O I：

10.1016/j.jeurceramsoc.2017.04.067

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：

Silicon carbide/graphene platelet (SiC/GPLs) composites were prepared using different weight percent of GPLs filler by hot pressing (HP) technology at 2100 degrees C in argon. The influence of the GPLs addition on bending strength, fracture toughness and related fracture characteristics was investigated. Both the bending strength and fracture toughness increased with increasing GPLs additives..The main fracture origins strength degrading defects were pores at the low content of platelets and combination of pores and GPLs or clusters of GPLs particles in systems with a higher content of platelets. The fracture toughness increased due to the activated toughening mechanisms mainly in the form of crack bridging and crack branching, while the crack deflection was limited. The highest fracture toughness of 4.4 MPa m(1/2) was achieved at 6 wt.% of GPLs addition, which was similar to 30% higher than the K-IC value of the reference material. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：4307 / 4314

页数：8

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