Two-Step Sintering of Ceramics with Constant Grain-Size, I. Y2O3 Export

@article{citeulike:1561221, abstract = {Isothermal and constant-grain-size sintering have been carried out to full density in Y2O3 with and without dopants, at as low as 40\% of the homologous temperature. The normalized densification rate follows Herring's scaling law with a universal geometric factor that depends only on density. The frozen grain structure, however, prevents pore relocation commonly assumed in the conventional sintering models, which fail to describe our data. Suppression of grain growth but not densification is consistent with a grain boundary network pinned by triple-point junctions, which have a higher activation energy for migration than grain boundaries. Long transients in sintering and grain growth have provided further evidence of relaxation and threshold processes at the grain boundary/triple point.}, author = {Wang, Xiao-Hui and Chen, Pei-Lin and Chen, I-Wei}, citeulike-article-id = {1561221}, citeulike-linkout-0 = {http://www.blackwell-synergy.com/doi/abs/10.1111/j.1551-2916.2005.00763.x}, citeulike-linkout-1 = {http://dx.doi.org/10.1111/j.1551-2916.2005.00763.x}, doi = {10.1111/j.1551-2916.2005.00763.x}, journal = {Journal of the American Ceramic Society}, keywords = {ceramic, foam, sinter, yttria}, number = {2}, pages = {431--437}, posted-at = {2007-08-15 00:58:14}, priority = {1}, title = {Two-Step Sintering of Ceramics with Constant Grain-Size, I. Y2O3}, url = {http://dx.doi.org/10.1111/j.1551-2916.2005.00763.x}, volume = {89}, year = {2006} }

TY - JOUR ID - citeulike:1561221 L3 - citeulike-article-id:1561221 N2 - Isothermal and constant-grain-size sintering have been carried out to full density in Y2O3 with and without dopants, at as low as 40% of the homologous temperature. The normalized densification rate follows Herring's scaling law with a universal geometric factor that depends only on density. The frozen grain structure, however, prevents pore relocation commonly assumed in the conventional sintering models, which fail to describe our data. Suppression of grain growth but not densification is consistent with a grain boundary network pinned by triple-point junctions, which have a higher activation energy for migration than grain boundaries. Long transients in sintering and grain growth have provided further evidence of relaxation and threshold processes at the grain boundary/triple point. IS - 2 JF - Journal of the American Ceramic Society EP - 437 TI - Two-Step Sintering of Ceramics with Constant Grain-Size, I. Y2O3 VL - 89 SP - 431 KW - ceramic KW - foam KW - sinter KW - yttria AU - Wang, Xiao-Hui AU - Chen, Pei-Lin AU - Chen, I-Wei PY - 2006/// UR - http://dx.doi.org/10.1111/j.1551-2916.2005.00763.x ER -