A Direct Examination of the Fracture Strength-Defect Size Relationship in Alumina Ceramics

Alumina ceramics with inter-connected pores were fabricated by freeze casting method. The open porosity and fracture strength were controlled by the concentration of Al2O3 slurry and sintering temperature. Sintered at 1600°C, the open porosity and fracture strength of Al2O3 ceramics fabricated by the slurry with concentration of 70wt% are 46.4% and 23.8 MPa, respectively.

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Effect of Defect Size and Notch Root Radius on Fracture Strength of Engineering Ceramics

Journal of the Ceramic Association Japan ◽

10.2109/jcersj1950.93.1076_186 ◽

1985 ◽

Vol 93 (1076) ◽

pp. 186-194 ◽

Cited By ~ 18

Author(s):

Ichiro TAKAHASHI ◽

Saburo USAMI ◽

Kimiaki NAKAKADO ◽

Hiroshi MIYATA ◽

Shigeru SHIDA

Keyword(s):

Fracture Strength ◽

Notch Root ◽

Defect Size ◽

Root Radius ◽

Engineering Ceramics ◽

Notch Root Radius

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Variation of the microstructure and fracture strength of cold isostatically pressed alumina ceramics with the alteration of dewaxing procedures

Journal of the European Ceramic Society ◽

10.1016/s0955-2219(99)00237-x ◽

2000 ◽

Vol 20 (7) ◽

pp. 843-849 ◽

Cited By ~ 12

Author(s):

Nobuhiro Shinohara ◽

Masataro Okumiya ◽

Tadashi Hotta ◽

Kenji Nakahira ◽

Makio Naito ◽

...

Keyword(s):

Fracture Strength ◽

Alumina Ceramics

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Analisis Simulasi Hubungan Suhu Sintering Dengan Nilai Kekerasan Dan Kekuatan Patah Keramik Alumina

JURNAL EDUSCIENCE ◽

10.36987/jes.v7i1.1676 ◽

2020 ◽

Vol 7 (1) ◽

pp. 34-39

Author(s):

Marnanda Seragih ◽

Sahara Lubis ◽

Juliandi Siregar

Keyword(s):

Fracture Strength ◽

Vickers Hardness ◽

Bending Strength ◽

Simulation Analysis ◽

Sintering Temperature ◽

Computational Simulation ◽

Alumina Ceramics ◽

Matlab Program ◽

Constant Change ◽

The Relationship

This research uses variable sintering temperature of 1300 0C, 1400 0C, 1500 0C and 1600 0C mixed with mullite additives 0%, 10%, 15%, 20% and 25%. As parameters of the study are the vickers hardness and bending strength. In this study a computational simulation has been designed with the Matlab program to analyze the relationship between the Vickers Hardness and bending strength to the sintering temperature of alumina ceramics (Al2O3) with variations in the addition of mullite additives.The best result of the hardness value which is close to the literature value is the 25 % mullite additive composition at a sintering temperature of 1600 0C which is 475 kgf / mm2. The best results of fracture strength values close to the literature value is the composition of the mullite additive 20% at a sintering temperature of 1600 0C which is 45,800 lbf / in2. From the results of simulation analysis for hardness and strength of the fractures can be obtained a constant change due to the constant increase in sintering temperature.Keywords: Matlab, Vickers Hardness and Bending Strength, Alumina Ceramics, Mullit.

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