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SM ISO690:2012 KARAKAS, Aptullah, BERKEM, Ali, CAPOGLU, Ahmet. Mechanical behaviour of in-situ formed Cordierite-Anorthite ceramic composite. In: Central and Eastern European Conference on Thermal Analysis and Calorimetry, Ed. 4, 28-31 august 2017, Chişinău. Germany: Academica Greifswald, 2017, Editia 4, p. 145. ISBN 978-3-940237-47-7. |
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Central and Eastern European Conference on Thermal Analysis and Calorimetry Editia 4, 2017 |
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Conferința "Central and Eastern European Conference" 4, Chişinău, Moldova, 28-31 august 2017 | ||||||
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Pag. 145-145 | ||||||
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Cordierite ceramics have excellent thermal shock resistance because of their very low thermal expansion coefficient. However, their relatively poor mechanical properties limits its large scale production [1-2-3]. To improve its mechanical behaviour some reinforcing phases are added to form a ceramic composite. In this study, dense cordierite-anorthite composite ceramic was in-situ formed during one step sintering. Cordierite-anorthite ceramic body was prepared from a mixture of pyrophyllite, α-alumina, wollastonite and Mg-clay with appropriate proportions. The samples were formed by employing aqueous tape casting method and sintered at 1340 °C for 2 h. The mechanical behaviour of sintered composite ceramics were characterised by measuring the elastic modulus, flexural strength, hardness and fracture toughness values at room temperature. X-ray diffraction (XRD) and scanning electron microscopy (SEM) studies were carried out to analyze the microstructure. The XRD analysis results showed that the main crystalline phases in the microstructure of ceramic composite were cordierite being the major phase and anorthite. Typical elastic modulus, flexural strength, hardness and fracture toughness values were 120 GPa, 90 MPa, 820 HV and 2.1 MPa1/2, respectively. |
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