Specific surface area and ultrasonic velocity wars measured in zinc oxide, titanic, and alumina powder compacts partially sintered to different pore fractions. A correlation between the reduction in surges area and the increase in ultrasonic velocity with degree of sintering was observed. In addition, the effects of particle size distribution were evaluated. The relationship between ultrasonic velocity and sumacs area reduction allows analyst of the ultrasonic data in 1ho context of existing sintering models.
Surface areas Is an attractive parameter for evaluation of Entering processes.
The affects of all ma6e transport mechanisms are manifested in the reduction In surface area which occurs during sintering. In comparison, dilatometric techniques are sensitive only to mechanisms leading to shrinkage during sintering. Specific surface area measurements cannot, however, be interpretation In-situ measurements during sintering. Ultrasonic velocity measurements are easily performed during sintering, however the interpretation of these data in porous powder compacts is not straightforward. Buying the Symposium Proceedings from the American Ceramic Society.