JUSTO ERBEZ , Ángel J.

The Physical-chemical study is continued and also that of the technological properties of ceramic interest of thirteen samples of clays from Santiponce, Dos Hermanas and Villanueva del Río y Minas, in the province of Sevilla and from Calera de León in the province of Badajoz. In this work, the smaller fraction of 1,12 micras is studier...

Zur Untersuchung kamen 18 keramische Ton-Problen die aus verschiedenen in Exploration befíndlichen Lagerstätten stammten, die in Tertiär-und Quartär-Gebieten der Zonen von Bailén und Loma de Ubeda der Provinz Jaén liegen. Diese Tonerden sind montmorillonit-glimmerähnlicher art, wobei diejenigen proben aus den zonen von Bailén und Linares...

Elf für die Keramikindustrie in Frage kommende Tongesteine aus verschiedenen normalerweise in Abbau befindlichen Vorkommen bei den Ortschaften Linares, Ubeda, Beas de Segura, Sorihuela de Guadalimar und Santistéban del Puerto wurden untersucht. Die Lagerstätten befinden sich meist in Triasformationen. Die Ergebnisse der Untersuchung...

La abundancia de fases cristalinas en mezclas es a menudo de difícil cuantificación utilizando métodos convencionales de difracción de rayos X, siendo aún más complicado en el análisis de cerámicas debido a la contribución de la fase no cristalina que se produce durante la cocción cerámica. El método Rietveld de refinamiento estructural permite...

WSex films with variable Se/W ratio were deposited by non-reactive r.f. magnetron sputtering from WSe2 target changing the applied d.c. pulsed bias conditions and substrate temperature. The structural and chemical properties were measured by cross-sectional scanning electron microscopy (X-SEM), energy dispersive analysis (EDX), X-ray...

Er-doped LaPO4 microspheres have been synthesized by spray pyrolysis and the near infrared (NIR) properties have been characterized. It has been found that, following an adequate post-annealing treatment, the emission properties are remarkably improved. The NIR luminescence intensity is highly enhanced and its decay time increases to a value...

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Protective nanocomposite coatings based on hard ceramic phases (TiC, TiB2) combined with amorphous carbon (a-C) are of interest because of their adequate balance between mechanical and tribological performances. In this work, Ti–B–C nanocomposite coatings were prepared by co-sputtering of graphite and TiB2 targets. Varying the discharge power...