2015
DOI: 10.1016/j.bsecv.2015.05.005
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Efecto de la microestructura y de la microdureza sobre la resistencia al desgaste de recubrimientos elaborados por proyección térmica por plasma atmosférico a partir de circona-alúmina, circona-itria y circona-ceria

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Cited by 8 publications
(4 citation statements)
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“…For each hardness measurement, at least 20 indentations were performed, but only 10 filled the requirements of the standard protocol [12]; the selected traces were normally in well melted areas of the coating well, and this is why the microhardness values are similar for all samples. When comparing the values obtained in this work with those reported by other authors, the coatings obtained by flame spraying were found to have microhardnesses ranging between 2.02 and 6.22 GPa [20], while the coatings obtained using the same powder but with the APS technique have microhardnesses of 10.1 GPa [22], which is greater than the one found in this work. The larger value is justified by a lower percentage of porosity and a greater amount of molten particles, which was expected for coatings obtained by APS.…”
Section: Microhardness and Wear Of Ceramic Coatings (Metaceram 25088 contrasting
confidence: 50%
See 1 more Smart Citation
“…For each hardness measurement, at least 20 indentations were performed, but only 10 filled the requirements of the standard protocol [12]; the selected traces were normally in well melted areas of the coating well, and this is why the microhardness values are similar for all samples. When comparing the values obtained in this work with those reported by other authors, the coatings obtained by flame spraying were found to have microhardnesses ranging between 2.02 and 6.22 GPa [20], while the coatings obtained using the same powder but with the APS technique have microhardnesses of 10.1 GPa [22], which is greater than the one found in this work. The larger value is justified by a lower percentage of porosity and a greater amount of molten particles, which was expected for coatings obtained by APS.…”
Section: Microhardness and Wear Of Ceramic Coatings (Metaceram 25088 contrasting
confidence: 50%
“…Bimodal areas result from agglomerated nanoparticles (see Figure 1a), which, at the time of passing through the flame, are partially melted leaving unmelted particles trapped by others that have completely melted. The formation of these areas was also reported for these same coatings by A. González et al [22], although in smaller quantities, but they used atmospheric plasma spraying. This type of bimodal area improves the mechanical properties of the coatings, such as the prevention of fracture resistance and crack propagation by dissipating energy in the nanometric areas [14,19].…”
Section: Layer Of Zro 2 -36%al 2 O 3 (Metaceram 25088 Tm )supporting
confidence: 49%
“…Estas partículas fundidas o semifundidas forman un apilamiento a una rápida velocidad de enfriamiento, de tal manera que forman individuales laminillas o lamelas obteniendo así el recubrimiento [1,7].…”
Section: Introductionunclassified
“…El proceso es utilizado en aplicaciones donde se requiere una excelente resistencia al desgaste, en las reconstrucciones de piezas que han sido mal maquinadas, o desgastadas. [2] La gama de recubrimientos y tratamientos aplicados es muy amplia y la finalidad de la operación consiste en proteger la superficie contra la corrosión o el desgaste, lubricarla, variar la conductividad eléctrica o la reflectividad al calor o a la luz, etc. Los espesores de estos recubrimientos y tratamientos suelen ser de varias decenas de micras, aunque en ocasiones muy especiales se llegue hasta varias centenas.…”
Section: Introductionunclassified