Preparation of Lead-Free Sr2 xCaxNaNb5O15 (x=0.1)-Based ... - J …
Journal of the Ceramic Society of Japan 110 [5] 491-494 (2002) Paper ... The dual-stage sintering was used to density SCNN ceramics, i.e. prefiring at 1240†Ž for 6 h and finally firing at 1280 -1360†Ž for ... (SEM, Model S-5000, , Japan). The polished specimens for SEM observations were thermally etched at 1200 ...