Development of master curves for discriminating the mechanism of solid state reactions from experimental data obtained by using the cyclic and controlled rate thermal analysis

1994 ◽  
Vol 41 (6) ◽  
pp. 1535-1541 ◽  
Author(s):  
J. M. Criado ◽  
L. A. Perez-Maqueda ◽  
A. Ortega
Keyword(s):  
Experimental Data ◽  
Thermal Analysis ◽  
Solid State ◽  
Solid State Reactions ◽  
Master Curves ◽  
Controlled Rate Thermal Analysis

Evaluation of the Sinterability of Copper-Substituted Ferrites by Means of Dilatometric Thermal Analysis

2014 ◽  
Vol 805 ◽  
pp. 254-259
Author(s):  
Vera Lúcia Othéro de Brito ◽  
Stéphanie Alá Cunha ◽  
Ana Paula Ribeiro Uchoas ◽  
Fabiana Faria de Araújo ◽  
Cristina Bormio Nunes ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Solid State ◽  
Sintering Temperature ◽  
Thermal Analyses ◽  
Spinel Ferrites ◽  
Solid State Reactions ◽  
Processing Route ◽  
Ceramic Method ◽  
Spinel Formation ◽  
Made In

Cobalt and cobalt-manganese spinel ferrites have magnetostrictive properties suitable for application in magneto-electric and magneto-mechanical transducers. In this work, copper-substituted ferrites of these compositions were processed by means of the ceramic method and their sinterabilities were evaluated by dilatometric thermal analyses. The results obtained suggest that copper affects the solid-state reactions for the spinel formation and lowers the required sintering temperature for the ferrites. However, the densification obtained with sintering of the copper-substituted ferrites at 950oC for 6h was only 64%, which indicates that further adjustments on the processing route must be made in order to obtain higher densities.

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