Fracture Toughness of Dense Cordierite: Sintering Cycle Effect

Fernando A. Costa Oliveira; José Cruz Fernandes; Julien Schmitt; Luis Guerra Rosa; Diamantino Dias

doi:10.4028/www.scientific.net/MSF.730-732.445

Paper Titles

Comparative Study of the Chemical Degradation Effects on Polymer Concrete with Limestone Aggregates
p.421

Concrete Retrofitting Using CFRP and Geopolymer Mortars
p.427

Evaluation of Pozzolanic Reactivity of Artificial Pozzolans
p.433

Evaluation of the Damages Occurred During the Installation of Non-Woven Geotextiles
p.439

Fracture Toughness of Dense Cordierite: Sintering Cycle Effect
p.445

Influence of the Parameters of Formulation on the Chemical Activity of Admixtures in Mortars
p.450

Influence of the Parameters of Formulation on the Fresh Properties of Cementing Materials with Admixtures
p.456

Mechanical Performance of Concrete with Partial Replacement of Sand by Sewage Sludge Ash from Incineration
p.462

Mitigation of Internal Expansive Reaction: The Role of Tungsten Mine Sludge
p.468

HomeMaterials Science ForumMaterials Science Forum Vols. 730-732Fracture Toughness of Dense Cordierite: Sintering...

Fracture Toughness of Dense Cordierite: Sintering Cycle Effect

Abstract:

The aim of this work was to analyse the fracture behaviour of commercial dense cordierite bodies sintered in an electrical furnace in static air at 1250°C, 1275°C and 1300°C for 30 min using different cycling schedules in order to obtain tougher materials at minimum energy costs. Using a stereomicroscope and a scanning electron microscope, fracture surfaces of as-sintered bars tested under four-point bending at room temperature were examined at different magnification levels in order to determine the origin of fracture in each sintered bar. Once the fracture origin was identified, it was possible to measure its size, and based on ASTM C1322-96a standard, we were able to estimate the fracture toughness of the sintered parts. Fracture toughness was found to increase with increasing of sintering temperature from 1.8 MPa∙m½ to 3.1 MPa∙m½ by rising the temperature from 1250°C to 1300°C as the fracture process is strongly influenced by the microstructure of the material.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 730-732)

Pages:

445-449

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.730-732.445

Citation:

Cite this paper

Online since:

November 2012

Authors:

Fernando A. Costa Oliveira, José Cruz Fernandes, Julien Schmitt, Luis Guerra Rosa, Diamantino Dias

Keywords:

Cordierite, Fracture Toughness, Sintering, Strength

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] F.A. Costa Oliveira, J. Cruz Fernandes, Mechanical and thermal behaviour of Cordierite-. Zirconia composites, Ceram. Int. 28 (2002) 79-91.

DOI: 10.1016/s0272-8842(01)00061-x

Google Scholar

[2] A. Yamuna, R. Johnson, Y.R. Mahajan, M. Latithambika, Kaolin-based cordierite for pollution control, J. Eur. Ceram. Soc. 24 (2004) 65-73.

Google Scholar

[3] S.H. Knickerbocker, A.H. Kumar, L.W. Herron, Cordierite Glass – Ceramics for Ceramic Packaging, Am. Ceram. Soc. Bull. 72 (1993) 90-95.

Google Scholar

[4] R.J. Beaks, R.L. Cook, Low-Expansion Cordierite Porcelains, J. Am. Ceram. Soc. 35 (1952) 53-57.

Google Scholar

[5] R. Novakovic, B. Radnovic, Z. Sotojiljkovic, V. Mikijelj, M. Susic, M.M. Ristic, Interceram vol. 35 (1986), 53-54.

Google Scholar

[6] M.A. Camerucci, G. Urretavizcaya, A.L. Cavalieri, Sintering of cordierite based materials, Ceram. Int. 29 (2003) 159-168.

DOI: 10.1016/s0272-8842(02)00100-1

Google Scholar

[7] C.A. Sorrell, Reaction sequence and structural changes in cordierite refractories, J. Am. Ceram. Soc. 43 (1960) 337-343.

DOI: 10.1111/j.1151-2916.1960.tb13667.x

Google Scholar

[8] B.H. Mussler, M.W. Shafer, Preparation and properties of mullite-cordierite composites, Ceram. Bull. 63 (1984) 705-710,714.

Google Scholar

[9] B.J. Pletka, S.M. Wiederhorn, A comparison of failure predictions by strength and fracture mechanics techniques, J. Mat. Sci. 17 (1982) 1247-1268.

DOI: 10.1007/bf00752234

Google Scholar

[10] H. Suzuki, K. Ota, H. Saito, Mechanical properties of alkoxy-derived cordierite ceramics, J. Mat. Sci. 23 (1988) 1534-1538.

DOI: 10.1007/bf01115687

Google Scholar