The deposition of innovative glass-ceramic composition (i.e. RKKP) coatings by Pulsed Lased Deposition (PLO) technique is reported. RKKP was synthesised following two methodologies: melt-processing and sol-gel, the latter being particularly suitable to tailor the compositional range. The PLD advantage with respect to other deposition techniques is the congruent transfer of the target composition to the coating. The physico-chemical properties of films were investigated by Scanning Electron and Atomic Force Microscopies, Fourier Transform Infrared Spectroscopy, Angular and Energy Dispersive X-ray Diffraction, and Vickers microhardness. The deposition performed at 12 J/cm(2) and 500 degrees C allows to prepare crystalline films with the composition that replicates rather well that of the initial targets. The 0.6 mu m thin melt-processing RKKP films, possessing the hardness of 25 GPa, and the 4.3 mu m thick sol-gel films with the hardness of 17 GPa were obtained. (C) 2012 Elsevier Ltd. All rights reserved.
Bioactive glass-ceramic coatings prepared by pulsed laser deposition from RKKP targets (sol-gel vs melt-processing route) / Fosca, Marco; A., De Bonis; I., Cacciotti; A., Bianco; V., Albertini Rossi; Caminiti, Ruggero; A., Ravaglioli. - In: MATERIALS RESEARCH BULLETIN. - ISSN 0025-5408. - STAMPA. - 47:5(2012), pp. 1130-1137. [10.1016/j.materresbull.2012.02.011]
Bioactive glass-ceramic coatings prepared by pulsed laser deposition from RKKP targets (sol-gel vs melt-processing route)
FOSCA, MARCO;CAMINITI, Ruggero;
2012
Abstract
The deposition of innovative glass-ceramic composition (i.e. RKKP) coatings by Pulsed Lased Deposition (PLO) technique is reported. RKKP was synthesised following two methodologies: melt-processing and sol-gel, the latter being particularly suitable to tailor the compositional range. The PLD advantage with respect to other deposition techniques is the congruent transfer of the target composition to the coating. The physico-chemical properties of films were investigated by Scanning Electron and Atomic Force Microscopies, Fourier Transform Infrared Spectroscopy, Angular and Energy Dispersive X-ray Diffraction, and Vickers microhardness. The deposition performed at 12 J/cm(2) and 500 degrees C allows to prepare crystalline films with the composition that replicates rather well that of the initial targets. The 0.6 mu m thin melt-processing RKKP films, possessing the hardness of 25 GPa, and the 4.3 mu m thick sol-gel films with the hardness of 17 GPa were obtained. (C) 2012 Elsevier Ltd. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
