Abstract

The hardness of hot-pressed silicon nitride ceramics has been measured over a wide range of applied loads, 0.02 to 300 N, for both Vickers and Knoop indenter geometries. The indentation size effect (ISE) was evident for loads less than about 1 N. The Vickers and Knoop hardness values agree provided they are compared at a given penetration of the respective indenter. The influence of the residual stresses of the ceramic surface on the indentation response in the as-machined, polished, and post-annealed state has been investigated. The results are discussed in relation to the characterization of indentation damage in brittle materials and fracture analysis models.

References

1.
Lawn
,
B.
,
Fracture of Brittle Solids
, 2nd ed.,
Cambridge University Press
,
1993
, pp.
249
-
306
.
2.
Microindentation Techniques in Materials Science and Engineering
, ASTM STP 889,
Blau
P. J.
and
Lawn
B. R.
, Eds.,
American Society for Testing and Materials
,
Philadelphia
,
1986
.
3.
Tojek
,
M. M.
and
Green
,
D. J.
, “
Effect of Residual Surface Stress on the Strength Distribution of Brittle Materials
,”
Journal of the American Ceramic Society
 0002-7820 https://doi.org/10.1111/j.1151-2916.1989.tb05996.x, Vol.
72
,
1989
, pp.
1885
-
1890
.
4.
Sargent
,
P. M.
and
Page
,
T. F.
, “
The Influence of Microstructure on the Microhardness of Ceramic Material
,”
British Ceramic Society Proceedings
, Vol.
26
,
Goodfrey
D. J.
, Ed.,
British Ceramic Society
,
Stoke-on-Trent, U.K.
1978
, pp.
209
-
224
.
5.
Mukhopadhyay
,
A. K.
,
Datta
,
S. K.
, and
Chakraborty
,
D.
, “
On the Microhardness of Silicon Nitride and Sialon Ceramics
,”
Journal of the European Ceramic Society
 0955-2219, Vol.
6
,
1990
, pp.
303
-
311
.
6.
Babini
,
G. N.
,
Bellosi
,
A.
, and
Galassi
,
C.
, “
Characterization of Hot-Pressed Silicon Nitride-based Materials by Microhardness Indentation
,”
Journal of Materials Science
 0022-2461, Vol.
22
,
1987
, pp.
1687
-
1693
.
7.
Silva
,
R. F.
and
Vieira
,
J. M.
, “
The Effects of Microstructure and Composition on Microhardness of CeO2 Doped Si3N4 Ceramics
,”
Third Euro-Ceramics
,
Duran
P.
and
Fernandez
J. F.
, Eds.,
Faenza Ed. Iberica
,
Castellon dela Plana, Spain
,
1993
, pp.
423
-
438
.
8.
Greskovich
,
C.
and
Yeh
,
H.
, “
Hardness of Dense β-Si3N4
,”
Journal of Materials Science Letters
 0261-8028, Vol.
2
,
1983
, pp.
657
-
659
.
9.
Chakraborty
,
D.
and
Mukerji
,
J.
, “
Characterization of Silicon Nitride Single Crystals and Polycrystalline Reaction Sintered Silicon Nitride by Microhardness Measurements
,”
Journal of Materials Science
 0022-2461 https://doi.org/10.1007/BF00550375, Vol.
15
,
1980
, pp.
3051
-
3056
.
10.
Greskovich
,
C.
and
Gazza
,
G. E.
, “
Hardness of Dense α- and β-Si3N4 Ceramics
,”
Journal of Materials Science Letters
 0261-8028, Vol.
4
,
1985
, pp.
195
-
196
.
11.
DeArellano-Lopez
,
A. R.
,
Martinez-Fernandez
,
J.
,
McMann
,
M. A.
, and
Singh
,
J. P.
, “
Room Temperature Mechanical Properties of Polycrystalline Silicon Nitride with Different Alpha/Beta Ratios
,”
Third Euro-Ceramics
,
Duran
P.
and
Fernandez
J. F.
, Eds.,
Faenza Ed. Iberica
,
Castellon dela Plana, Spain
,
1993
, pp.
411
-
416
.
12.
Oliver
,
W. C.
,
Hutchings
,
R.
, and
Pethica
,
J. B.
, “
Measurement of Hardness at Indentation Depths as Low as 20 Nanometers
,”
Microindentation Techniques in Materials Science and Engineering
, ASTM STP 889,
Blau
P. J.
and
Lawn
B. R.
, Eds.,
American Society for Testing and Materials
,
Philadelphia
,
1986
, pp.
90
-
108
.
13.
Bell
,
T. J.
,
Bendeli
,
A.
,
Field
,
J. S.
, et al
, “
The Determination of Surface Plastic and Elastic Properties by Ultra Microindentation
,”
Metrologia
 0026-1394, Vol.
28
, 1991–92, pp.
463
-
469
.
14.
Berriche
,
R.
and
Holt
,
R. T.
, “
Effect of Load on the Hardness of Hot Isostatically Pressed Silicon Nitride
,”
Journal of the American Ceramic Society
 0002-7820, Vol.
76
, No.
6
,
1993
, pp.
1602
-
1604
.
15.
Sargent
,
P. M.
, “
Use of the Indentation Size Effect on Microhardness for Materials Characterization
,”
Microindentation Techniques in Materials Science and Engineering
, ASTM STP 889,
Blau
P. J.
and
Lawn
B. R.
, Eds.,
American Society for Testing and Materials
,
Philadelphia
,
1986
, pp.
160
-
174
.
16.
Bolse
,
W.
and
Peteves
,
S. D.
, “
Modification of the Mechanical Properties of Ceramic Surfaces by Energetic Ion Irradiation
,”
Nuclear Instruments and Method in Physics Research
, Vol.
B68
,
1992
, pp.
331
-
341
.
17.
James
,
M. R.
and
Cohen
,
J. B.
, “
The Measurement of Residual Stresses by X-ray Diffraction Techniques
,”
Treatise in Materials Science and Technology
, Vol.
19A
,
1980
, pp.
1
-
62
.
18.
Pradell
,
T.
,
Glaude
,
P.
,
Peteves
,
S. D.
, and
Bullock
,
E.
, “
The Measurement of Residual Stresses in Engineering Ceramics
,” Report EUR 12635 EN,
Commission of the European Communities
,
Luxembourg
,
1990
.
19.
Anstis
,
G. R.
,
Chantikul
,
P.
,
Lawn
,
B. R.
, and
Marshall
,
D. B.
, “
A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: I, Direct Crack Measurements
,”
Journal of the American Ceramic Society
 0002-7820 https://doi.org/10.1111/j.1151-2916.1981.tb10320.x, Vol.
64
,
1981
, pp.
533
-
538
.
20.
Marshall
,
D. B.
and
Lawn
,
B. R.
, “
Indentation of Brittle Materials
,”
Microindentation Techniques in Materials Science and Engineering
, ASTM STP 889,
Blau
P. J.
and
Lawn
B. R.
, Eds.,
American Society for Testing and Materials
,
Philadelphia
,
1986
, pp.
26
-
46
.
21.
Chantikul
,
P.
,
Anstis
,
G. R.
,
Lawn
,
B. R.
, and
Marshall
,
D. B.
, “
A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: II, Strength Method
,”
Journal of the American Ceramic Society
 0002-7820 https://doi.org/10.1111/j.1151-2916.1981.tb10321.x, Vol.
64
,
1981
, pp.
539
-
543
.
22.
Williams
,
D. P.
and
Evans
,
A. G.
, “
Simple Method for Studying Slow Crack Growth
,”
Journal of Testing and Evaluation
 0090-3973, Vol.
1
,
1973
, pp.
264
-
270
.
23.
Ceramic Data Book, Engineering Property Data on Typical Ceramics in Japan
, Vol.
1
,
Toyota CRDL
,
Japan
,
1985
, p. 64.
24.
Marshall
,
D. B.
,
Evans
,
A. G.
,
Khuri Yakub
,
B. T.
, et al
, “
The Nature of Machining Damage in Brittle Materials
,”
Proceedings of the Royal Society of London
 0370-1662, Vol.
A385
,
1983
, pp.
461
-
475
.
25.
Evans
,
A. G.
and
Wilshaw
,
T. R.
, “
Quasi-static Solid Particle Damage in Brittle Solids-I. Observations, Analysis and Implications
,”
Acta Metallurgica
 0001-6160 https://doi.org/10.1016/0001-6160(76)90042-0, Vol.
24
,
1976
, pp.
939
-
956
.
26.
Marshall
,
D. B.
, “
Controlled Flaws in Ceramics: A Comparison of Knoop and Vickers Indentation
,”
Journal of the American Ceramic Society
 0002-7820 https://doi.org/10.1111/j.1151-2916.1983.tb09989.x, Vol.
66
,
1983
, pp.
127
-
131
.
27.
Ramachandran
,
N.
and
Shetty
,
D. K.
, “
Rising Crack Growth Resistance (R-curve) Behaviour of Toughened Alumina and Silicon Nitride
,”
Journal of the American Ceramic Society
 0002-7820, Vol.
74
,
1991
, pp.
2634
-
2641
.
28.
Li
,
C. W.
,
Lee
,
D. J.
, and
Lui
,
S. C.
, “
R-curve Behaviour and Strength of In-situ Reinforced Silicon Nitrides with Different Microstructures
,”
Journal of the American Ceramic Society
 0002-7820 https://doi.org/10.1111/j.1151-2916.1992.tb07197.x, Vol.
75
,
1992
, pp.
1777
-
1785
.
29.
Johnson-Walls
,
D.
,
Evans
,
A. G.
,
Marshall
,
D. B.
, and
James
,
M. R.
, “
Residual Stresses in Machined Ceramic Surfaces
,”
Journal of the American Ceramic Society
 0002-7820, Vol.
69
,
1986
, pp.
44
-
47
.
30.
Samuel
,
R.
,
Chandrasekar
,
S.
,
Farris
,
T. N.
, and
Licht
,
R. H.
, “
Effect of Residual Stresses on the Fracture of Ground Ceramics
,”
Journal of the American Ceramic Society
 0002-7820 https://doi.org/10.1111/j.1151-2916.1989.tb06007.x, Vol.
72
,
1989
, pp.
1960
-
1966
.
31.
Tanaka
,
K.
, “
X-Ray Diffraction Study on Residual Stresses
,”
Residual Stresses-III, Science and Technology
, Vol.
1
,
Fujiwara
H.
,
Abe
T.
, and
Tanaka
K.
, Eds.,
Elsevier
,
Essex, U.K.
,
1992
, pp.
21
-
30
.
32.
Lawn
,
B. R.
and
Evans
,
A. G.
, “
A Model for Crack Initiation in Elastic-Plastic Indentation Fields
,”
Journal of Materials Science
 0022-2461, Vol.
12
,
1977
, pp.
2195
-
2199
.
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