Abstract
Using the Pechini method, pigments with spinel structure (Zn7Sb2O12)were synthesized by substitution of the cation Zn2+ by Co2+, in compounds with different concentrations of Sb2O3. The doping resulted in CoxZn(7–x)Sb2O12 phases(x=1–7) that were isomorphs to spinel, denominated as samples A and B. After thermal treatment at 400C for 1 h, the powders were characterized by thermogravimetry(TG) and differential thermal analysis (DTA). The results indicate a different behavior whena higher amount of Sb2O3 is used, due to the presence of a secondary phase (ilmenite).
Introduction The history of ceramics practically overlaps the history of mankind. Since ancient times, people have produced, through various methods, vases, ornaments, and many other items of ceramics. The oldest ceramic
] Lan W. , Kexing F. , Liang Y. , Botao W. The application of ceramic coatings in petroleum chemical and building industries , International Conference on Material and Environmental Engineering , Jiujiang
. The application of ceramic coatings in petroleum chemical and building industries , International Conference on Material and Environmental Engineering, Jiujiang (Jiangxi), China, 21-24 March 2014 , Atlantis Press, 2014, pp. 146
both destructive and non-destructive has been used for the qualitative and quantitative characterization of ancient mortars, plasters, and clay ceramics. The Ottoman ceramic tobacco pipes were used in the daily life for both men and women from
Introduction Advanced ceramic materials are used in variety industries, especially in optoelectronics, metallurgy, medicine, and space industry due to their high thermal resistance, hardness and other unique properties. The key
Abstract
The elaboration of Na+ super-ionic conductor (NaSICON) ceramics is studied in this work. These solid electrolytes can be used as sensor for detection of polluted gases in air. Two sorts of ceramics with different chemical compositions are synthesised by soft chemistry route: a zirconium-based NaSICON and a hafnium-based NaSICON. DTA-TG and temperature depending X-ray diffractometry were used to follow the thermal decomposition of the precursor phases. The electrical properties of these ceramic sodium ionic conductors are investigated by complex impedance spectroscopy (CIS). The substitution of the zirconium by the hafnium increases the ceramic conductivity and decreases the activation energy E a (from 0.29 to 0.12 eV).
Introduction Low temperature co-fired ceramic (LTCC) technology has been proved to be a valuable development of thick film technology which establishes new application areas. The LTCC process has long been used for the
-milling effect on thermal behavior of mixed oxide nanoparticles. In this work, x TiO 2 (a) · (1− x )α-Fe 2 O 3 (with molar concentration x = 0.1, 0.5, and 0.9) ceramic system was synthesized through high energy ball-milling. The thermal behaviors of
Bibliografia P CRG 1997 The Study of Later Prehistoric Pottery: general policies and guidelines for analysis and publication . Prehistoric Ceramic Research Group: Occasional Papers 1 and 2 . 1997 . P ettijohn e altri 1972 F. J. P
