Optical dilatometry for the control of microstructure development during sintering |
| |
Authors: | F Raether R Springer S Beyer |
| |
Affiliation: | (1) Fraunhofer-Institut Silicatforschung ISC, Neunerplatz 2, D-97082 Würzburg, Germany e-mail: raether@isc.fhg.de Tel.: +49 931 4100 200, Fax: +49 931 4100 200, DE |
| |
Abstract: | An optical method for the in situ measurement of sintering shrinkage has been developed. It relies on a simple and robust
CCD camera technique and is applicable up to high temperatures (2000 °C) and heating rates (10 K/min) in industrial furnace
atmospheres. A resolution of less than 1 μm for a sample diameter of 10 mm has been achieved using a special geometrical arrangement
and a smart image analysis algorithm. Systematic errors are small (<0.1%) and can be corrected by an additional measurement.
A high reproducibility of shrinkage measurement has been observed in various sintering experiments. The optical dilatometer
is very flexible: it has been used also for an accurate temperature calibration and for wetting experiments and it can be
adjusted to different furnace types.
Received: 17 May 2000 / Reviewed and accepted: 26 June 2000 |
| |
Keywords: | Dilatometry Optical Non-contact Shrinkage Sintering CCD camera |
本文献已被 SpringerLink 等数据库收录! |