Investigation of Indentation Fracture Toughness (KIC) and Weibull Parameters of 0.25Li2O.2SiO2-0.75BaO.2SiO2 Glass-Ceramic

• Autorzy: Ertuğ B. , Çetiner B. R. , Gökçe H. , Erkmen Z. E. , Öveçoğlu M. L.

Identyfikatory

DOI

10.1515/amm-2017-0294

• Języki publikacji: EN

Abstrakty

EN

In the present study, mechanical properties of 0.25Li₂O.2SiO₂-0.75BaO.2SiO₂ glass-ceramic were investigated. The trans-formations‘ temperatures were determined by DTA instrument. The optimum nucleation temperature was found to be 540°C. This suggested the crystallization temperatures as 675, 720 and 800°C. After carrying out crystallization heat treatments, Vickers indentation test was applied. In order to determine the indentation fracture toughness (K_IC), crack half-length ‚c‘ of the samples was measured. To calculate K_IC, Young’s modulus, E and the measured hardness, H_v were used. Using K_IC and probability of fracture ‚P‘, ln ln[1/(1 − P)] – ln K_IC graph was drawn based on the Weibull distribution equation. Consequently, Weibull modulus, ‚m‘ and scale parameter, ‚K₀‘ were determined and compared with each other.

Słowa kluczowe

EN

lithium barium silicate glass-ceramic; indentation fracture toughness; hardness; statistical analysis; weibull modulus

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 4
• Strony: 1963--1968
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr., wzory

Twórcy

autor

Ertuğ B.

• Nişantaş I University, Department of Mechanical Engineering, 34406 Kağithane, Istanbul, Turkey

autor

Çetiner B. R.

• Marmara University, Department of Metallurgical and Materials Engineering, 34722 Göztepe, Istanbul, Turkey

autor

Gökçe H.

• Istanbul Technical University, Department of Metallurgical and Materials Engineering, 34469 Maslak, Istanbul, Turkey

autor

Erkmen Z. E.

• Marmara University, Department of Metallurgical and Materials Engineering, 34722 Göztepe, Istanbul, Turkey

autor

Öveçoğlu M. L.

• Istanbul Technical University, Department of Metallurgical and Materials Engineering, 34469 Maslak, Istanbul, Turkey

Bibliografia

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Uwagi

EN

The authors are grateful to Dr. Mustafa İlhan of Marmara University, Department of Metallurgical and Materials Engineering, for performing SEM analysis employed in this study.

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).