Young's modulus of prefired quartz porcelain in a temperature range of 20-1200 °C

4Citations
Citations of this article
7Readers
Mendeley users who have this article in their library.
Get full text

Abstract

Green samples (50 w/% of kaolin, 25 w/% of quartz and 25 w/% of feldspar) are prefired up to 400-1200 °C and analyzed during their second firing. Thermogravimetry, thermodilatometry and dynamic thermomechanical analyses are performed in a range from room temperature to 1100 °C. In the samples prefired at temperatures of up to 400 °C and 500 °C, the release of physically bound water has a significant influence on Young's modulus, increasing its values by ≈25 % and 6.5 %, respectively, between room temperature and 200 °C. In the samples prefired at temperatures above 500 °C, the α → β transition of quartz governs Young's modulus in a temperature interval of 500-700 °C. Young's modulus increases by 29-40 % in the samples prefired at 600-1200 °C due to the closing of the cracks located around quartz grains. The presence of a glassy phase is not necessary for the steep increase of Young's modulus around the α → β transition of quartz. At high temperatures, an increase in Young's modulus is caused by solid-phase sintering (above 800 °C), formation of Al-Si spinel (≈950-980 °C) and crystallization of mullite (above 1050 °C).

Cite

CITATION STYLE

APA

Trník, A., Štubòa, I., Ondruška, J., Šín, P., & Csáki, Š. (2019). Young’s modulus of prefired quartz porcelain in a temperature range of 20-1200 °C. Materiali in Tehnologije, 53(4), 535–541. https://doi.org/10.17222/mit.2018.252

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free