Navegar por los elementos (27 total)

Zirconia is evermore in demand as a thermal barrier coatings (TBC) for energy economy and metal protection. Several methods are in use to produce the coatings, including sol-gel, CVD and PVD, however plasma ablation, has not been notoriously…

Coloured coatings were obtained on steel by plasma spraying without severe in-flight alteration of pigments, taking profit of the low thermal conductivity of the glassy matrix of glaze particles. Colour matching was studied by mixing 3 different…

Milled particles from a (SiO2-CaO-Fe2O3) glass were smoothed by flame spraying, focusing on the elimination of superficial roughness or angularity without reaching complete fusion of the glass. The purpose of this study is the further application to…

The spreading phenomena of particles during thermal spraying are quite difficult to observe given the kinetics of the process. In this work, the splat formation of glass and alumina is theoretically compared, showing that glass transition and…

Las granallas de alúmina son más costosas y duran menos que las granallas metálicas, a la hora de preparar sustratos para recubrirlos industrialmente por HVOF. En el presente trabajo, se reemplaza alúmina por acero como…

Semicrystalline microspheres are generally easily obtained from petrurgical processes, ie crystallization from a melted composition when cooling velocity and oxide compositions are unable to yield total vitrification. However,
when glass ceramics…

Cenosphere formation is a current phenomenon when spray drying suspensions. An impervious crust is formed as the surface of sprayed droplets is dried by the hot gas, and the residual water inside the droplet is overheated, and breaks part of the…

Slags may be flame sprayed to produce hollow vitreous or semi-crystalline microspheres.
Feedstock compositions, as well as the heating and cooling kinetics, determine the properties
of the final product. These kinetics were estimated by finite…