The Thermal Expansion of Solid State BaFe₁₂O₁₉ and Flux Ba_0.8Pb_0.2Fe₁₂O₁₉ Pellets

Abstract

Solid state sintered pellets of barium hexaferrite were performed. The Curie temperature of BaFe12O19 pellets were measured with differential scanning colorimetry (DSC). The coefficient of thermal expansion (CTE) of pellets was defined above and below the Curie temperature. The Curie temperature calculated basedon the dilatometry is are in good agreement with the DSC measurements.

Investigation on the effect of BaCO3on the physical and mechanical properties of 5Ni/10N iO.NiFe2O4cermet

“…The depletion of overall hardness as compared with the initial condition (C0 specimen) could be attributed to several factors including the presence of porosities on the cross-section of specimens that the hardness indentation has been done. On the other hand, the existence of microcracks will be eventuated in lower hardness values rather than primarily hardness [28][29][30][31]. However, by increasing the BaCO 3 content up to 5 wt% in CB5 specimen and the formation of second phases with high hardness contents such as BaFe 12 O 19 [29], hardness value reaches ~147 HV that is higher than that of CB1 sample (~106 HV).…”