caa a22 4500 388019123 CHVBK 20180307124919.0 cr unu---uuuuu 161130e199810 xx s 000 0 eng 10.1557/JMR.1998.0386 doi S0884291400046215 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0386 The effect of excess neodymia on the grain growth of Nd1+xBa2−xCu3Oy solid solutions [Elektronische Daten] The grain growth of dense, fine-grained Nd1+xBa2−xCu3Oy (x = 0.1−0.4) specimens has been examined in pure O2(g) at 938 °C and 967 °C. No detectable change in average grain size was observed for Nd1.4Ba1.6Cu3Oy within 72 h at 967 °C; however, a significant increase in average grain size developed between 18 and 24 h at 967 °C for Nd1.3Ba1.7Cu3Oy, and within 8−12 h at ≤967 °C for Nd1.2Ba1.8Cu3Oy and Nd1.1Ba1.9Cu3Oy. Microstructural analyses revealed that sudden changes in average grain size coincided with the formation of relatively large (abnormal) grains. A broadening of the grain size distribution was also observed. TEM analyses revealed that grain boundaries were free of second phases. The possible role of anisotropy in grain boundary energy and/or mobility on grain growth is discussed. Copyright © Materials Research Society 1998 Rogenski Russell B. Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210 Sandhage Kenneth H. Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210 Vasiliev Alexander L. School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 Kvam Eric P. School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 Journal of Materials Research Cambridge University Press 13/10(1998-10), 2819-2832 0884-2914 13:10<2819 1998 13 JMR https://doi.org/10.1557/JMR.1998.0386 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0386 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rogenski Russell B. Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210 NATIONALLICENCE 700 1- Sandhage Kenneth H. Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210 NATIONALLICENCE 700 1- Vasiliev Alexander L. School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 NATIONALLICENCE 700 1- Kvam Eric P. School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/10(1998-10), 2819-2832 0884-2914 13:10<2819 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge