doi:10.3390/ma11122503engSotelo, A.Torres, M.A.Madre, M.A.Diez, J.C.Influence of Ag on the properties of Ca0.9Yb0.1MnO3 sintered ceramicsART-2018-109855In this study, Ca0.9Yb0.1MnO3 + x wt.% Ag (with x = 0, 1, 3, 5, and 10) thermoelectric materials were prepared via the classical ceramic method. In spite of the very high sintering temperature (1300 °C), no significant Ag losses were observed following this process. Moreover, Ag addition enhanced cation mobility during sintering due to the formation of a liquid phase. Microstructurally, it was found that Ag decreases porosity; this was confirmed by density measurements. Ag was also found to promote the formation of a Ca2Mn2O5 secondary phase. Despite the presence of this secondary phase, samples with Ag displayed lower electrical resistivity than Ag-free ones, without a drastic decrease in the absolute Seebeck coefficient. The highest thermoelectric performances, which were determined by power factor, were obtained in 1 wt.% Ag samples. These maximum values are slightly higher than the best of those reported in the literature for sintered materials with similar compositions, with the additional advantage of their being obtained using a much shorter sintering procedure.2018http://zaguan.unizar.es/record/7696810.3390/ma11122503http://zaguan.unizar.es/record/76968oai:zaguan.unizar.es:76968info:eu-repo/grantAgreement/ES/DGA/T54-17Rinfo:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2017-82183-C3-1-RMaterials 11, 12 (2018), 2503 [10 pp]byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess