caa a22 4500 388018860 CHVBK 20180307124918.0 cr unu---uuuuu 161130e199806 xx s 000 0 eng 10.1557/JMR.1998.0234 doi S0884291400044708 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0234 Boccaccini Aldo R. Institute for Mechanics and Materials, University of California, San Diego, La Jolla, California 92093-0404 Shrinkage anisotropy of glass powder compacts sintered in dilatometers [Elektronische Daten] [Aldo R. Boccaccini] Dilatometer push rods exert uniaxial compressive stresses on powder compacts undergoing sintering. In this study the effect of such stresses on the shrinkage anisotropy behavior of glass powder compacts is considered. A shrinkage anisotropy factor (k), defined by the ratio between axial and radial strain, is used to quantify the anisotropy in cylindrical compacts (k = 1 represents isotropic shrinkage). The available experimental data in the literature indicate that the effect of the applied dilatometer stress is to increase the value of k over that of free sintering conditions. For the small stresses exerted by the dilatometer push rods, it is shown that k is always. 1. The common practice of calculating the sintered density from uniaxial dilatometer data, ignoring the existence of shrinkage anisotropy, is shown to lead to significant errors, even for values of k only slightly different from k = 1. Copyright © Materials Research Society 1998 Journal of Materials Research Cambridge University Press 13/6(1998-06), 1693-1697 0884-2914 13:6<1693 1998 13 JMR https://doi.org/10.1557/JMR.1998.0234 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0234 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Boccaccini Aldo R. Institute for Mechanics and Materials, University of California, San Diego, La Jolla, California 92093-0404 NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/6(1998-06), 1693-1697 0884-2914 13:6<1693 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge