Effects of Vickers Cracks on the Mechanical Properties of Solid-phase-sintered Silicon Carbide Ceramics

被引：4

作者：

Yang Xiao ^{[1
,2
]}

Liu Xue-Jian ^{[1
]}

Huang Zheng-Ren ^{[1
]}

Liu Gui-Ling ^{[1
]}

Yao Xiu-Min ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2012年 / 27卷 / 09期

关键词：

silicon carbide ceramic; indentation load; mechanical properties; FRACTURE-TOUGHNESS; INDENTATION TOUGHNESS; HARDNESS; KNOOP;

D O I：

10.3724/SP.J.1077.2012.11650

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：

In order to study the effects of Vickers cracks on the mechanical properties of solid-phase-sintered silicon carbide (SSiC for short) ceramics, the indentation cracks and the crack profiles were observed after loading 0.1-100 N loads on the SSiC samples by SEM. The critical indentation load for Vickers crack initiation in SSiC ceramics lies between 0.1 N and 0.2 N. Indentations by loads lower than 0.5 N have limited influence on bending strength. And if the indentation loads is higher than 10 N, the obtained hardness floats around 24.2 GPa and the cracks are half-coin type. The proper Vickers indentation load range for SSiC ceramic hardness and toughness tests are determined to be 10 N or above.

引用

页码：965 / 969

页数：5

共 23 条

[1] Dynamic Vickers indentation of brittle materials [J].

Anton, RJ ;

Subhash, G .

WEAR, 2000, 239 (01) :27-35

[2]

Brian Lawn, 2010, FRACTURE BRITTLE SOL, P228

[3] Comparison of instrumented Knoop and Vickers hardness measurements on various soft materials and hard ceramics [J].

Chicot, D. ;

Mercier, D. ;

Roudet, F. ;

Silva, K. ;

Staia, M. H. ;

Lesage, J. .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2007, 27 (04) :1905-1911

[4] Pressed ceramics onto zirconia. Part 2: Indentation fracture and influence of cooling rate on residual stresses [J].

Choi, Jung Eun ;

Waddell, J. Neil ;

Swain, Michael V. .

DENTAL MATERIALS, 2011, 27 (11) :1111-1118

[5] DIRECT OBSERVATION AND ANALYSIS OF INDENTATION CRACKING IN GLASSES AND CERAMICS [J].

COOK, RF ;

PHARR, GM .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (04) :787-817

[6] Analysis of the indentation size effect in brittle materials from nanoindentation load-displacement curve [J].

Ebisu, T. ;

Horibe, S. .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2010, 30 (12) :2419-2426

[7] FRACTURE TOUGHNESS DETERMINATIONS BY INDENTATION [J].

EVANS, AG ;

CHARLES, EA .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1976, 59 (7-8) :371-372

[8] ANALYSIS OF VICKERS INDENTATION [J].

GIANNAKOPOULOS, AE ;

LARSSON, PL ;

VESTERGAARD, R .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1994, 31 (19) :2679-2708

[9] Determining indentation toughness by incorporating true hardness into fracture mechanics equations [J].

Gong, JH .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1999, 19 (08) :1585-1592

[10] Indentation toughness of ceramics: a statistical analysis [J].

Gong, JH .

CERAMICS INTERNATIONAL, 2002, 28 (07) :767-772

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