Influence of Zirconia Addition on the Crystallization Kinetics of a Y-Si-Al-O-N Glass

• The crystallization behaviour of YSiAlON glasses with and without ZrO2 additives, prepared by melting at 1700 °C, were studied by means of differential scanning calorimetry, scanning microscopy and X-ray powder diffraction analysis. The optimum nucleation temperatures were determined to be Tg + 65°C and Tg + 50 °C for the ZrO2-free and the ZrO2-containing glass, respectively. The crystallization of the glasses was found to be dominated by the surface mechanism of nucleation and growth. The added zirconia acted as a growth modifier rather than a nucleating agent.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Annan materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Other Materials Engineering (hsv//eng)

Keyword

Materialteknik

Engineering Materials

Publication and Content Type

ref (subject category)

art (subject category)